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Three new complexes, namely, {[Cd(TZMB)(1,3-bimb)]·(H 2 O) 2 } n ( 1 ), {[Mn 2 (TZMB) 2 (1,4-bib) 0.5 (H 2 O) 2 ]·(H 2 O) 2 (DMA)} n ( 2 ), {[Co 2 (TZMB) 2 (1,4-bib)]·(H 2 O) 1.5 } n ( 3 ), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analysis, elemental analysis (EA), IR spectra (IR), powder X-ray diffraction (PXRD) and thermogravimetric (TG) analysis. Single X-ray diffraction analysis reveals that complex 1 is a 5-connected net 2D network with the point symbol of (4 8 ·6 2 ), complex 2 is a 3,3,3,5,9-connected net 3D framework with the point symbol of {3·4·5}{3·4 3 ·5 3 ·6 2 ·7}{3·4 5 ·5 4 ·6 11 ·7 11 ·8 3 ·9}{4·5·6}{4 2 ·6} and complex 3 is a 3,4-connected 3D framework. The topological type of 3 is dmc (topos&RCSR.ttd) with the point symbol of (4·8 2 )(4·8 5 ). Furthermore, luminescent properties of 1 and the magnetic properties of complexes 2 and 3 were also investigated. [ABSTRACT FROM AUTHOR]

Two novel metal–organic frameworks, formulated as [Ni3(qptc)2(H2O)3]·3.5H2O·3Me2NH (1) and [Co3(qptc)2(H2O)4]·5H2O (2) (H4qptc = 1,1′:4′,1′′:4′′,1′′′-quaterphenyl-2,4,2′′′,4′′′-tetracarboxylic acid), have been hydrothermally constructed based on a rigid aromatic multicarboxylate ligand. The single-crystal X-ray diffraction analysis shows that complex 1 crystallizes in the triclinic crystal system with space group P1̅ and possesses a 4,8-connected 3D open framework including trinuclear nickel Ni3 SBUs, which belongs to an scu topology with the point symbols (416·612) and (44·62). Complex 2 belongs to the monoclinic crystal system with space group C2/c and exhibits a 3D framework containing Co3 SBUs, which is a flu topology with the point symbols (412·612·84) and (46). Furthermore, the variable-temperature magnetic susceptibilities of complexes 1 and 2 have been investigated. Both complexes show weak ferromagnetic coupling between metal ions estimated by using a linear trinuclear model for 1 in the range of 2–300 K and the PHI program for 2 in the range of 20–300 K taking the orbital contribution into consideration. [ABSTRACT FROM AUTHOR]

One chiral Cu(I) metal–organic framework {[Cu(DCI)]·0.1Cyc·0.45Nbenz} n ( 1 ) (HDCI = 4,5-dicyanoimidazole, Cyc = cyclohexanol, Nbenz = nitrobenzene), was obtained under solvothermal condition. Complex 1 presents a 3D chiral porous framework with 38.2% porosity. The 3D metal–organic framework can be regarded as a PtS net with the vertex symbol of {4 2 .8 4 }. The gas adsorption/desorption experiments of complex 1 have been measured at 77 K. Moreover, the CD spectrum and photoluminescent behavior of complex 1 have been studied. [ABSTRACT FROM AUTHOR]

A novel polyoxometalate (POM) hybrid material based on a Keggin polyanion and silver(i)–organic sheet, namely, [Ag4(apym)4(SiW12O40)]n (1), where apym = 2-aminopyrimidine, has been synthesized under hydrothermal conditions and characterized by elemental analysis, IR spectroscopy, thermal gravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. In the structure of 1, polyanions link 2D 3-connected 4·82-fes AgI–organic sheets to generate a 3D complicated framework. Moreover, the catalytic performance of 1 towards the cyanosilylation of carbonyl compounds has been tested under mild conditions, showing a high turnover number and turnover frequency. [ABSTRACT FROM AUTHOR]

The design and assembly of new coordination architectures is nowadays a challenging research field that attracts increasing attention due to the unique structural and functional properties of such metal–organic materials. The selection of suitable organic ligands as building blocks is one of the most important points for the construction of novel coordination architectures with fascinating structures and functions. In contrast to the recognized use of some N heterocyclic ligands for the construction of coordination architectures, 2-aminopyrimidine (NH2pym) and its related derivatives are simple, commercially available, soluble and highly versatile angular building blocks, but still underdeveloped until now. Given the high potential of this kind of ligands for future developments in this research field, the present highlight will review the coordination-driven assembly of 2-aminopyrimidyl building blocks with or without auxiliary ligands with closed-shell d10 Ag(i) ions as well as their luminescence properties. Multiplicity of the established structural motifs thus far (only considering the coordination interaction) is outlined, illustrating the broad range of coordination motifs from 0D discrete molecular architectures to infinite extended one-, two-, and three-dimensional (1-D, 2-D, and 3-D) networks. The specific influencing factors such as anion, auxiliary ligand, substituent, and solvent on structural assemblies and the fluorescence of these crystalline solids are also discussed. [ABSTRACT FROM AUTHOR]

This work reports the assembly, topological structure, supramolecular isomerism and luminescence of three solvent-controlled families of coordination compounds, [Zn(bpz)2(H2O)3·2Hpta] (1), [Zn(bpz)(pta)]n (2), [Zn(bpz)(tpa)(H2O)]n (3), [Zn(bpz)(tpa)·4H2O]n (4), and [Zn(bpz)(npa)·H2O]n (5 and 6) (bpz = 3,3′,5,5′-tetramethyl-4,4′-bipyrazole, H2pta = phthalic acid, H2tpa = terephthalic acid, H2npa = 4-nitrophthalic acid). The six transition metal compounds reported in this study were definitely characterized by X-ray crystallography to reveal how networks with different topologies are constructed around the same four-connected metal centers. Compound 1 is a 0D discrete molecule, in which Zn(ii) is in a trigonal bipyramidal coordination geometry, whereas the guest Hpta− as counteranion is hydrogen-bonded with the [Zn(bpz)2(H2O)3]. In compound 2, the Zn(ii) center is linked by two bpz and two pta; thus, a 4-connected dia network with the point symbol {66} is formed. In 3, the Zn(ii) center is six-coordinated, but in fact it is also a 4-connected node in the whole network due to the terminal aqua ligand and bidentate chelating carboxylate group thus, the resultant network has a 4-connected cds topology with the point symbol {65·8}. Compound 4 exhibits a chiral two-fold interpenetrated 4-connected qtz network with the point symbol {64·82}. Compounds 5 and 6 are a pair of genuine supramolecular isomers with identical 4-connected dia topology. The three families of compounds, namely, 1/2, 3/4, and 5/6, are structurally controlled by the solvent systems H2O/CH3OH–H2O, H2O/DMF–CH3OH, and CH3OH–H2O/CH3CN–H2O, respectively. Except for the discrete molecule 1, the other five compounds have the same 4-connected coordination networks, but with different topologies ranging from dia (2, 5, 6), cds (3) to qtz (4), suggesting the important influences that the linkage orientations of the ligand and different geometries of the 4-connected node exert in self-assembly. Interestingly, discrete 1 can be irreversibly transformed from a 0D discrete molecule to an infinite 3D structure (2) by heating it in CH3OH–H2O solvent, indicating a solvent-induced structural transformation. In addition, results about thermal stabilities and photoluminescence spectra are also discussed in detail. [ABSTRACT FROM AUTHOR]

Abstract: We have calculated geometries, aromaticity, enthalpies of formation and combustion, the proton and hydride affinities for the predicted five-membered ring high energetic compounds B2N2OH p (p =0–2) which contain boron, nitrogen and furanoxo group employing the B3LYP/aug-cc-pVTZ, MP2/aug-cc-pVTZ, G2 and G3 methods. Only eleven five-membered ring structures were obtained as minima at the potential energy surfaces. All compounds have large negative NICS values and the strong aromatic properties. It reveals that the incorporation of the furanoxo group into the ringed high energetic boron–nitrogen compounds can improve the aromaticity and stabilities. As the high energetic compounds, the enthalpies of formation and the combustion are 42.4–146.9kJ/mol and 10–31kJ/g at G2 level, respectively, which are close to those of the three-membered boron–nitrogen high energetic compounds. The hydride affinities are lower than the proton affinities, indicating that the Lewis acidity of the compounds B2N2OH p (p =0–2) is weaker than the Lewis basicity. The results of the proton and hydride affinities may also predict that the electrophilic reagent prefers to bind to the nitrogen atom at the ortho-position of furanoxo group while the nucleophilic reagent inclines tobind to the boron atom at the meta-position of furanoxo group. [Copyright &y& Elsevier]

Review: 182 refs. [ABSTRACT FROM AUTHOR]

One novel 3D cadmium coordination polymer, namely, {[Cd 2 (bptc 4 − )(ox 2 − ) 0.5 (H 2 O) 2 ] · 4.5H 2 O} n ( 1 ), has been hydrothermally synthesized through a reaction of 2,3′,4,5′-biphenyltetracarboxylic acid (H 4 bptc) with divalent cadmium salt in the presence of a second ligand (ox = oxalic acid). X-ray single crystal structure analysis reveals that tetranuclear cadmium clusters are formed by linking two Cd1 and two Cd2 ions with carboxyl groups. Each ox 2 − ligand, with a bidentate chelating mode, connects two Cd2 ions from two adjacent tetranuclear clusters to afford 1D zigzag cadmium cluster chains. Furthermore, 1D chains are connected by bptc 4 − ligands to extend a 3D framework with one-dimensional channels along the [001] direction. From a topology view, complex 1 exhibits an unprecedented 2-nodal 4, 10-connected net with the Schläfli symbol of {4 6 } 2 {4 9 . 5 12 .6 22 .7 2 }. The luminescence analyses reveal that complex 1 shows an emission maximum at 437 nm, which may be attributed to the intra-ligand transition. A red shift of 31 nm compared with H 4 bptc ligand was observed and the luminescent decay lifetime is 2.74 ns, which indicates that it might be a potential blue light-emitting candidate. In addition, it was also characterized by elemental, IR spectra, PXRD and TG analyses. [ABSTRACT FROM AUTHOR]

Abstract. The solvothermal reaction between cuprous iodide and the rigid triangular imidazole ligand in mixed N, N′-dimethylacetamide (DMA)-acetonitrile solvent leads to the isolation of the 3D metal-organic framework [(Cu4I4)3(TIPA)4] ·7DMA ( 1) [TIPA = tri(4-imidazolylphenyl) amine], which was characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, and single-crystal X-ray diffraction. Topologically, the structure of 1 is an unprecedented 3,3,4,4-connected net with a point symbol of {4.8.10}2{4.82}2{42.82.102}2{84.122}. Compound 1 exhibits orange-red photoluminescence with an emission maximum at 622 nm at room temperature. [ABSTRACT FROM AUTHOR]

Reaction of 2-methyl-imidazole-4,5-dicarboxylic acid (H3MIDC) with different salts (Zn and Mn) has led to three new HnMIDC-metal complexes varying from zero- to two-dimensional structures under hydrothermal and solvothermal conditions. The complex [Zn(H2MIDC)2(H2O)2] (1) is a 0-D complex constructed by H2MIDC- and Zn centers and the complex [Mn(HMIDC)(H2O)2] · H2O (2) is a polymeric 1-D chiral chain constructed by HMIDC2- and Mn centers connected into a 3-D supramolecular framework with a 1-D channel. The complex [Zn3(MIDC)2(H2O)2(DMF)2] · 0.5H2O (3) shows a 2-D puckered structure composed of MIDC3- and Zn. The differences of the three complexes demonstrate that reaction solvent and temperature have important effects on the structure of these complexes. Complex 3 shows strong fluorescence in the solid state at room temperature. [ABSTRACT FROM AUTHOR]

Abstract: As a follow-up to our study on the aromatic five-membered ring B2N2OH p , in this paper, the structures, heats of formation (HOF) and enthalpies of combustion, densities, the proton and hydride affinities of the mixed boron-, nitrogen- and oxygen-containing non-aromatic three- and four-membered rings B n N m OH p (n =0–3, m =0–3, p =0–3) have been investigated employing the (U)B3LYP/6-311++G∗∗, (U)B3LYP/aug-cc-pvtz, (U)MP2/6-311++G∗∗, G2, G3 and CBS-QB3 methods. Only twelve five-membered ring structures (a)–(l) were obtained as minima at the potential energy surfaces. The results have shown that the incorporation of the oxygen atom into the ringed high energetic boron–nitrogen compounds can improve the stabilities due to the oxygen atom donating its lone pair of electrons into the empty 2p orbital of the sp2-hybridized boron atom. According to the enthalpies of formation, the thermal stability is predicted to be the order of (k)>(l)>(c)>(h)>(d)>(j)>(a)>(e)>(f)>(b)>(g)>(i). As expected, the density always increases as the boron atoms being replaced by the nitrogen atoms. For the compounds with both of the boron and nitrogen atoms, the hydride affinities are greatly lower than the proton affinities, indicating that the Lewis acidity of them is weaker than the Lewis basicity. For the compound (k), the electrophilic reagent prefers to bind to the nitrogen atom at the ortho-position of the oxygen atom, while for the compounds (c)–(e), the nucleophilic reagent will bind to the boron atom at the meta-position. In particular, the very good linear correlations of the HOFs between the B3LYP and G2, G3 and CBS-QB3 methods for the compounds B n N m OH p have been found, indicating that the accurate HOFs might be obtained from the cheap B3LYP approach by the linear correlation of the HOFs instead of the expensive models. It has been also found that, for the hydride affinities of all the compounds, the values are always the same order of G2>G3>CBS-QB3>MP2/6-311++G∗∗ >B3LYP/6-311++G∗∗ >B3LYP/aug-cc-pvtz. We believe that this investigation must be a new milestone in the development history of explosives and pyrotechnics in theoretical. [Copyright &y& Elsevier]

Two novel adsorbents (AGD301 and ArgD301) were successfully prepared through ring-opening reaction. The adsorption performance and recognition selectivity of AGD301 and ArgD301 towards AuCl4− were studied by batch adsorption experiments. The results showed that adsorption time, pH, temperature and solution concentration had a significant influence on the adsorption performance. At 298 K and pH of 2, the equilibrium adsorption capacity of AGD301 and ArgD301 towards AuCl4− could reach 400.75 and 451.67 mg·g−1, respectively. In addition, AGD301 and ArgD301 possessed excellent selectivity and good reusability. [ABSTRACT FROM AUTHOR]

Studies on carbon nanotube-attached diiron chelate compounds (labeled as CNT- f -1xdt) with the same PCNCP ligand but various dithiolate bridges show that the nature of dithiolate bridges can significantly influence on the electrocatalytic HER performances of hydrogenase-inspired hybrid catalysts in neutral aqueous solution. [Display omitted] • Novel diiron chelate precursors 1xdt (xdt = adt, odt, pdt) were prepared and characterized. • A new family of CNT-supported diiron molecular compounds CNT- f -1xdt was constructed and characterized. • Various dithiolate bridges of 1xdt for electrocatalytic HER performances of CNT- f -1xdt were studied. • Hybrid catalysts CNT- f -1adt are active and stable for electrocatalytic HER in neutral aqueous media. • Hybrid catalysts CNT- f -1adt with an adt bridge exhibits a higher HER activity in neutral aqueous media. In an effort to explore the effect of dithiolate bridges on the electrochemical hydrogen evolution reaction (HER) performances of hydrogenase-inspired catalysts under fully aqueous condition, three new diphosphine-chelate diiron molecular compounds [Fe 2 (μ -xdt)(CO) 4 (k2 -(Ph 2 PCH 2) 2 N(CH 2 CH 2 OH)] (labeled as 1xdt , xdt = (SCH 2) 2 X, X = NPh (adt) vs. O (odt) vs. CH 2 (pdt)) with various dithiolate bridges (i.e. , xdt) were prepared and then are covalently attached onto carbon nanotubes (CNTs) to fabricate biomimetic CNT-attached hybrid catalysts labeling as CNT- f -1xdt. The intact structures of target catalysts CNT- f -1xdt have been evidenced through Raman, X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV). Further, the electrochemical HER properties and stabilities of CNT- f -1xdt loaded onto glassy carbon electrode (GC) are studied and compared in 0.05 M phosphate buffer solution (PBS, pH of 7.4) as neutral aqueous medium by using CV, linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and chronopotentiometry. In comparison with homologues CNT- f -1odt or CNT- f -1pdt containing odt or pdt bridges, the hybrid catalyst CNT- f -1adt bearing an adt bridge is found to have the better electrocatalytic HER activity and similar stability in 0.05 M PBS. This work is significant to develop a promising generation of CNT-attached electrode materials engineered with diiron-based molecular HER catalysts for water splitting into H 2. [ABSTRACT FROM AUTHOR]

Amino acid functionalized D301 resins (Tyr-D301, Phe-D301, and Ala-D301) are successfully prepared to remove phenols. The influences of adsorption condition on adsorption ability and the practical application value are investigated. The functionalized D301 resins possess strong adsorption ability toward phenol by ways of hydrogen bond interaction. The adsorption capacity of Tyr-D301, Phe-D301, and Ala-D301 is 388.2, 368.4, and 321.5 mg· g−1 at 293 K and pH of 2, respectively. The adsorption process could be described satisfactorily by Lagergren-first-order model and Langmuir model. The rate constant is 0.057, 0.042, and 0.035 min−1, respectively. The functionalized D301 can be used to dispose wastewater containing phenols. [ABSTRACT FROM AUTHOR]

Graphical abstract The exhausted surface molecularly imprinted polymers (SMIP) could be effectively regenerated by 1 mol L−1 of hydrochloric acid aqueous solution, and the regenerative SMIP could be reused at least 10 times without significant reduction of adsorption capacity and selectivity coefficient. Highlights • A novel efficient surface imprinted technique is well designed. • The SMIPs possess strong adsorption ability and excellent recognization selectivity towards template. • The recognition selectivity of as-prepared SMIPs is higher than that of other IIPs. • The SMIPs have good chemical stability and reusability. Abstract In this paper, a novel surface molecularly imprinting technique with higher imprinting efficiency is well designed. It really realizes the synchronization of polymer crosslinking and template imprinting. Then the surface molecularly imprinted polymers (SMIPs) are synthesized using 2-nitrophenol (2-NP), 3-nitrophenol (3-NP), 4-nitrophenol (4-NP), and 4-methylphenol (4-MP) as template, respectively. The physicochemical characteristics of SMIPs are characterized by Fourier transform infrared spectroscopy (FTIR) and elemental analysis. The adsorption performances and recognization selectivity of SMIPs towards template are systematically investigated by batch method. The experimental results show that the SMIPs possess strong adsorption ability and excellent selectivity towards template. The selectivity coefficients of 2-NP, 3-NP, 4-NP and 4-MP relative to 4-chlorophenol (4-CP) are 132.2, 124.5, 157.3 and 37.8, respectively. The adsorption process could be well described by the Lagergren-first-order model and Langmuir-monolayer adsorption model. SMIPs have good chemical stability and reusability. The consecutive adsorption-desorption experiments show that the exhausted SMIPs could be effectively regenerated, and the regenerative SMIPs could be reused without significant reduction of adsorption capacity and selectivity coefficient. [ABSTRACT FROM AUTHOR]

Four 3D novel coordination polymers (CPs), formulated as {[Co3(TCPB)2(bibp)2(dioxane)2.5(H2O)2]·(DMF)}n (1), {[Cd6(TCPB)4(bibp)4(dioxane)(H2O)2]·(dioxane)3·DMF·(H2O)0.5}n (2), {[Co1.5(TCPB)(bimb)0.5(DMF)(dioxane)]}n (3), and {[Zn1.5(TCPB)2(bimb)(DMF)(dioxane)2]·dioxane}n (4) (H3TCPB = 1,3,5-tris(4-carbonylphenyloxy)benzene, bibp = 4,4′-bis(imidazol-1-yl)biphenyl, and bimb = 1,4-bis(imidazol-1-ylmethyl)benzene), have been synthesized under solvothermal conditions and characterized by elemental analyses (EA), single-crystal X-ray diffraction analyses, X-ray powder diffraction analyses (PXRD), IR spectra, and thermogravimetric analyses (TGA). The structural analyses reveal that complex 1 can be simplified as a new 2-nodal (3,10)-{3·42}2 {34·410·514·614·72·8}-3,10T3 net, complex 2 has a 3D 2-nodal (3,8)-c network with the point symbols of {42·5}2{44·59·68·73·83·9}, complex 3 exhibits a novel 3D framework with the point symbol of {410·632·7·82}{43}2, and the structure of 4 is a (3,8)-connected {43}2{46·618·84}-tfz-d net. Furthermore, gas sorption behaviors of complex 1 for N2, H2, CH4, and CO2 have been comprehensively studied at varying temperatures: the results reveal that the adsorption capacity of 1 to N2 is stronger than those of other gases. Meanwhile, IAST calculations reveal that 1 exhibits excellent selective separation for CO2/CH4. Magnetic measurements indicate that both 1 and 3 have antiferromagnetic interactions within the trinuclear clusters. In addition, the fluorescent measurements showed that 2 and 4 exhibit highly selective and sensitive detection of Fe3+ and Cr3+ ions. [ABSTRACT FROM AUTHOR]

Abstract Three 3D Cd(II) complexes, namely, {[Cd 4 (L) 2 (dioxane) 3 (H 2 O) 3 ]·DMA·5H 2 O} n (1), {[Cd 2 (L)(phen)(H 2 O) 3.5 ]·4H 2 O} n (2) and {[Cd 2 (L)(phen)(H 2 O) 4 ]·3H 2 O·DMA} n (3) have been synthesized from the ligand of 3,5-di(2′,5-dicarboxylphenyl)pyridine (H 4 L) with or without the assistance of phen auxiliary linker (phen = 1,10-phenanthroline). Complex 1 displays a 3D (4,4,9)-connected net with the point symbol of {3.45}{32.414.55.611.72.82}{45.6}. Complex 2 shows a 3D (4,8)-connected net with the point symbol of {43. 63} 2 {46.619.83}. Complex 3 presents a 3D 4-connected net with the point symbol of {43.62.8}. The fluorescence measurements showed 1 – 3 exhibit sensitive detection of Fe(III) and Cr(VI) ions with a low detection limit. In addition, the gas sorption isotherms of complex 3 for N 2 , H 2 , CO 2 and CH 4 were investigated, and the corresponding uptakes are 239.8 cm3 g−1 for N 2 and 93.9 cm3 g−1 for H 2 at 77 K, 50.5 cm3 g−1 for CO 2 and 17.0 cm3 g−1 for CH 4 at 298 K, 54.8 cm3 g−1 for CO 2 and 24.2 cm3 g−1 for CH 4 at 273 K, respectively. Based on the N 2 isotherm, the Brunauer−Emmett−Teller (BET) and Langmuir surface area of 3 were calculated to be 610.1 and 710.5 m2 g−1, respectively. Moreover, the two binary gas mixtures adsorption was also studied, indicating that the adsorption of 3 for CO 2 is better than that of CH 4 , which was verified by ideal adsorbed solution theory (IAST) with the adsorption selectivity being 8.5 (landfill gas, CO 2 /CH 4 = 0.5/0.5) and 7.2 (natural gas, CO 2 /CH 4 = 0.05/0.95). Graphical abstract Three 3D Cd(II) complexes have been synthesized from the ligand of 3,5-di(2′,5-dicarboxylphenyl)pyridine (H 4 L) with or without the assistance of phen auxiliary linker (phen = 1,10-phenanthroline). For complexes 1 – 3 , the fluorescence measurements were studied, exhibiting sensitive detection of Fe(III) and Cr(VI) ions. In addition, the gas sorption isotherms of complex 3 for N 2 , H 2 , CO 2 and CH 4 were investigated. fx1 Highlights • Three Cd(II) complexes have been constructed from 3,5-di(2′,5-dicarboxylphenyl)pyridine (H 4 L) with or without the help of phen. • In addition, luminescent properties of complexes, the adsorption behaviors and the selectivity of 3 for CO 2 /CH 4 separation were investigated. [ABSTRACT FROM AUTHOR]

Two novel coordination polymers, {[Cd(TZMB)(1,4-bib) 0.5 ]·(H 2 O) 1.5 } ( 1 ) and {[Zn(TZMB)(1,4-bib) 0.5 ]} n ( 2 ), have been synthesized under solvothermal conditions. Complex 1 displays a 3D structure with the (4 7 .8 4 )(4.7 2 .8 3 ) topology and Complex 2 is a 3D structure with the point symbol of {4.8 2 }{4.8 5 }. And complex 1 shows good luminescent quenching effect for organic solvent molecules (actone and p-nitrophenol) and Fe 3+ . [ABSTRACT FROM AUTHOR]

Three coordination polymers (CPs), {[Zn(HL)]·2CH 3 CN} n (1) {[Co(HL)(bimb)]·4H 2 O} n ( 2 ) and {[Cd(HL)(bimb)]·3EtOH·3H 2 O·DMF} n ( 3 ) (H 3 L = tris( p -carboxyphenyl)phosphane oxide, bimb = 1,4-bis(imidazol-1-ylmethyl)benzene) have been synthesized under solvothermal conditions. Their structures have been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis, IR spectra, powder X-ray diffraction (PXRD) and thermogravimetric (TG) analysis. Structural analyses reveal that complex 1 appears a 3D 3,5-connected {4.6 2 } 2 {4 2 .6 9 .8 4 } net. While 2 and 3 are 1D polymeric chains that were further packed into 3D supramolecular architectures through hydrogen bond interactions. Furthermore, fluorescence measurements indicate that the complex 1 can sensitively sense acetone, nitrobenzene derivatives and Fe 3+ ion, which implies that the 1 is expected to be luminescence sensor materials for sensing small molecules and metal ions. [ABSTRACT FROM AUTHOR]

High adsorption capacity, short adsorption time, and easy regeneration are very important and urgently needed for qualified adsorbents used in removing toxic heavy metals from wastewater. Based on this, a thiourea modified D301 resin (TD301) was designed and prepared via simple grafting polymerization and modification procedure. The TD301 was characterized by the scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FTIR) and elemental analysis. The adsorption performances of TD301 towards low concentration of toxic heavy metal ions from aqueous solution were investigated. By virtue of the abundant amine and C S groups, TD301 possesses strong adsorption ability for Hg(II), Pb(II) and Cd(II). The pH and temperature have a great influence on the adsorption capacity. The adsorption capacities of TD301 towards Hg(II), Pb(II) and Cd(II) could reach 454.1, 436.6 and 254.1 mg g-1 at 293 K and pH of 6, respectively. The adsorption process could be well described by the Lagergren-first-order model and was a Langmuir monolayer chemical adsorption. The adsorption thermodynamic experiment indicated that adsorption of TD301 towards Hg(II), Pb(II) and Cd(II) was an endothermic and spontaneous process drived by entropy. In addition, TD301 could be reused almost without any loss in the adsorption capacity. [ABSTRACT FROM AUTHOR]

Two new coordination polymers, namely [Zn(TZMB)] n (1) and {[Zn(TZMB)](H 2 TZMB)]·(C 2 H 5 OH) 0.5 (H 2 O) 2.5 } n (2), (H 2 TZMB = 4,4′-(1H-1,2,4-triazol-1-yl)methylene-bis(benzonic acid), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analysis, elemental analysis (EA), IR spectrum analysis (IR), powder X-ray diffraction (PXRD), and thermogravimetric (TG) analysis. Single X-ray diffraction analysis reveals that complex 1 is a 3D 3,6-connected net with the point symbol of (6 11 0.8 4 )(6 3 ) 2 and complex 2 is a 2D 3-connected net with the point symbol of (6 3 ). Furthermore, luminescent properties of complexes 1 and 2 were also investigated in detail. [ABSTRACT FROM AUTHOR]

In this article, a new surface imprinted polymer D301‐g‐IIPDMC is successfully prepared using AuCl4− as a template. The adsorption and recognition performances of D301‐g‐IIPDMC for AuCl4− are studied by using a static method and competitive adsorption experiment. The experimental results show that D301‐g‐IIPDMC possesses very strong adsorption affinity and excellent recognition for AuCl4−. The adsorption capacity of D301‐g‐IIPDMC for AuCl4− is 831.08 mg/g, and the selectivity coefficient relative to CuCl42− is 128. The adsorption behavior is an endothermic spontaneous process, and fit well with pseudo‐second order kinetic model and Freundlich adsorption isotherm model. Besides, D301‐g‐IIPDMC is desorbed easily and exhibits excellent reusability. [ABSTRACT FROM AUTHOR]

Herein, five coordination polymers, namely {[Ni2(tptc)(4,4′-bibp)2]·2H2O·2cyclohexanol}n (1), {[Co2(tptc)(4,4′-bibp)2]·2H2O·2cyclohexanol}n (2), {[Zn2(tptc)(1,2-bimb)2]}n (3), {[Co(tptc)0.5(1,4-bib)]·H2O·DMF}n (4), and {[Co2(tptc)(1,2-bimb)(H2O)]·H2O}n (5) (H4tptc = terphenyl-3,3′′,5,5′′-tetracarboxylic, 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl, 1,4-bib = 1,4-bis(imidazol-1-yl)benzene, and 1,2-bimb = 1,2-bis(imidazol-1-ylmethyl)benzene) were successfully constructed based on a rigid terphenyl-tetracarboxylic acid ligand and N-containing auxiliary ligands under solvothermal conditions. Their structures were determined by single-crystal X-ray diffraction and further characterized by elemental analyses, IR spectroscopy, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Complexes 1 and 2 involved a new 4,6-c 3D network structure. Complex 3 displayed an open 3D structure with the bbf topological type. Complex 4 involved an extended 3D (4,6)-c network with the point symbol of {44·610·8}{44·62}. Complex 5 had a 2D framework with the dinuclear [Co2(COO)2] SBUs. The variable-temperature magnetic susceptibilities of complexes 1, 2, 4, and 5 were also investigated, and the results indicated that the isophthalic acid bridge exhibited weak ferromagnetic coupling. Moreover, the fluorescence experiments showed that complex 3 had a potential application in the sensing of small organic molecules. [ABSTRACT FROM AUTHOR]

Three novel coordination polymers, formulated as {[M(Htcpb)(4,4′-bpy)·(DMF)·(Dioxane) 0.5 ·(H 2 O) 2 ]} n (M = Co ( 1 ), Cd ( 2 )), {[Zn 2 (Htcpb)(Hbim)](DMF) 3 ·(Dioxane) 2 ·(H 2 O) 3 } n ( 3 ) (H 3 tcpb = 1,3,5-tris(4-carbonylphenyloxy) benzene, 4,4′-bpy = 4,4-bipyridine and Hbim = benzimidazole), have been synthesized. Their structures have been determined by single-crystal X-ray diffraction analysis, elemental analysis (EA), IR spectra (IR), powder X-ray diffraction (PXRD) and thermogravimetric analysis (TGA). Complexes 1 and 2 are isomorphic and feature 2-fold interpenetrating 2D sheets, which are further expanded into a 3D supramolecular structure through hydrogen bonds. Complex 3 shows a 2-fold interpenetrating 3D (4,6)-c net with the point symbol of (4 3 ·6 12 )·(4 3 ·6 3 ) 2 . Furthermore, the magnetic property of 1 , as well as the luminescence sensing of complexes 2 and 3 for small organic molecules, nitrobenzene derivatives (NDVs) and metal ions have been investigated. [ABSTRACT FROM AUTHOR]

High adsorption capacity, fast adsorption rate, easy regeneration and good reusability were very important for qualified adsorbents used in removing toxic heavy metals from wastewater. Based on this, a novel adsorbent was well designed and synthesized by functionalizing D301 resin with iminodiacetic acid (IDA). The physicochemical characteristics of IDA-functionalized D301 (ID301) were characterized by the scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET), Fourier transform infrared spectroscopy (FTIR) and elemental analysis. The adsorption performances of ID301 towards toxic heavy metal ions were systematically performed from kinetics to isotherms and thermodynamics by batch technique. The effects of contact time, initial metal concentration, pH, temperature and adsorbent dosage on adsorption performance were investigated. ID301 possesses strong adsorption ability for Cu(II), Pb(II) and Cd(II). pH and temperature has a great influence on the adsorption capacity. The adsorption capacities of ID301 towards Cu(II), Pb(II) and Cd(II) could reach 4.48, 2.99 and 2.26 mmol·g − 1 at 293 K and pH of 5, respectively. Langmuir isotherm and pseudo-second-order equation could satisfactorily describe the experimental data. The adsorption thermodynamic experiment indicated that adsorption of ID301 towards Cu(II), Pb(II) and Cd(II) was an endothermic and spontaneous chemisorption process driven by entropy. In addition, ID301 could be reused without losing adsorption capacity significantly. [ABSTRACT FROM AUTHOR]

In this study, two new adsorbents, D301- g -EDAPGMA and D301- g -THIOPGMA, were obtained successfully on the basic of chemically modified D301 resin using ethylenediamine and thiourea. The adsorption, recognition and recovery properties of these two adsorbents for AuCl 4 − were studied through batch method. The experimental results showed that these two adsorbents possess strong adsorption ability and excellent selectivity for AuCl 4 − , and pH has a great influence on the adsorption capacity in the studied pH range. The maximum adsorption capacity of D301- g -EDAPGMA and D301- g -THIOPGMA for AuCl 4 − reaches 298 and 326 mg·g − 1 at pH of 2, respectively. D301- g -EDAPGMA and D301- g -THIOPGMA possess very high selectivity coefficients for AuCl 4 − and these two adsorbents can be used to recover AuCl 4 − selectively from gold-bearing chloride solution. The extraction rate of these two adsorbents for AuCl 4 − could reach 98%. D301- g -EDAPGMA and D301- g -THIOPGMA have excellent regeneration property, and the consecutive adsorption-desorption experiments showed that they could be reused almost without any loss in the adsorption capacity. [ABSTRACT FROM AUTHOR]

Two new coordination polymers, namely, {[Cu 3 (BCPB)(HBCPB)(H 2 BCPB)(H 2 O)]·(CH 3 OH)(H 2 O)} n ( 1 ), and {[Cd(HBCPB)(1,4-bib) 1.5 ]·4H 2 O} n ( 2 ) (H 3 BCPB = 3,5-bis(2-carboxy-phenoxy)-benzoic acid, 1,4-bib = 1,4-bis(1H-imidazol-4-yl)benzene), have been synthesized under hydrothermal conditions and characterized by single-crystal X-ray diffraction analysis, elemental analysis (EA), IR spectra (IR), powder X-ray diffraction (PXRD), and thermogravimetric (TG) analysis. The X-ray diffraction analysis reveals that complex 1 is an interesting (3,3,5,6)-connected 2D network of point symbol (3·4 2 ) 2 (3·4 3 ·5 2 ·6 3. 7) 2 (3 2 ·4 2 ·5 2 ·6 2 ·7 2 ·8 2 ·9 3 )(4 2 ·6) 2 , and the complex 2 is a 4-connected 3D dia framework of point symbol (6 6 ). Furthermore, the magnetic property of 1 , and luminescence sensing of complexes 1 and 2 for small organic molecules were also investigated. [ABSTRACT FROM AUTHOR]

• New diiron monophosphine precursors FePR (R = F , H, and Me) were prepared and characterized. • A new family of CNT-supported diiron monophosphine hybrids CNT- f -FePR was fabricated and characterized. • Substituent effects of FePR on electrocatalytic HER behaviros of CNT- f -FePR were investigated systematically. • Electrochemical studies indicate hybrid CNT- f -FePF exhibits a better HER activity in 0.1 M H 2 SO 4. • DFT calculation reveals hybrid CNT- f -FePF has a lower Δ G H* value relative to homologues CNT- f -FePR (R = H , Me). In order to explore substituent effects of PR 3 -phosphine ligands of diiron dithiolato complexes on the catalytic performances of [FeFe]-hydrogenase mimics for hydrogen evolution reaction (HER) in an aqueous medium, three new diiron monophosphine complexes [{(μ -SCH 2) 2 N(C 6 H 4 CH 2 CH 2 OH)}Fe 2 (CO) 5 {P(C 6 H 4 R- 4) 3 }] (labeled as FePR ; R = F , H, and Me) were prepared and can be further linked covalently into carbon nanotube (CNT) to construct the target CNT-supported hybrids denoting as CNT- f -FePR. The molecular structures of diiron complexes FePR are well characterized through element analysis, fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) and X-ray crystallography, whereas the formations of target hybrids CNT- f -FePR have been confirmed by using X-ray photoelectron spectroscopy (XPS), Raman and FT-IR. Notably, the electrochemical HER performances of target hybrids CNT- f -FePR (R = F , H, and Me) are studied and compared in 0.1 M H 2 SO 4 aqueous solution by means of linear sweep voltammetry (LSV), cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and density functional theory (DFT) calculation. Among these hybrids, the CNT- f -FePF hybrid exhibits a more efficient HER activity in an aqueous media based on their electrochemical observations that the CNT- f -FePF hybrid with F-substituted phosphine has lower applied overpotential, smaller Tafel slope, larger electrochemical active surface area, smaller charge transfer resistance, and lower hydrogen chemisorption free energy relative to its analogues CNT- f -FePH and CNT- f -FePMe with H- or Me-substituted phosphines. A new family of CNT-supported diiron monophosphine complexes denoting as CNT- f -FePR (R = F vs. H vs. Me) was constructed in order to investigate the substituent effects of diiron phosphine clusters FePR on the electrochemical HER performances of hydrogenase-inspired catalysts CNT- f -FePR in aqueous medium. [Display omitted] [ABSTRACT FROM AUTHOR]

Two coordination polymers [Cd(tptc) 0.5 (4,4′–bibp)] n ( 1 ) and {[Zn 3 (Htptc) 2 (phen) 2 ]·1.5H 2 O} n ( 2 ) (H 4 tptc = terphenyl-3,3″,5,5″-tetracarboxylic acid, 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl, and phen = 1,10-phenanthroline) were synthesized under solvothermal conditions. Complex 1 displays a 3D structure with a Schläfli symbol of {4 4 .6 2 }{4 8 .6 20 }. Complex 2 possesses a 2D layer network, incorporating [Zn 3 (COO) 6 ] second building units (SBUs), which is packed into a 3D supramolecular architecture by π ⋯ π interactions. Both of them exhibit strong luminescence characteristics. It is worth to note that complexes 1 and 2 show potential application to detect small organic molecules. [ABSTRACT FROM AUTHOR]

Three novel metal–organic frameworks, formulated as [Co(HDCPN)(4,4′-bibp)]·1.5H2O (1), [Cd3(DCPN)2(4,4′-bibp)2H2O]·1.5H2O (2) and [Mn3(DCPN)2(4,4′-bibp)3(H2O)4] (3) (H3DCPN = 6-(3,5-dicarboxylphenyl)nicotinic acid and 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl), have been solvothermally synthesized based on an unsymmetrical rigid carboxylate ligand. Single-crystal X-ray diffraction analysis shows that complex 1 is an sql/Shubnikov tetragonal plane network with mononuclear Co(ii) ions, which is connected by O2…H2…O1 hydrogen bonds to generate a 3D framework. Complex 2 is a new 3D (3,10)-c network based on trinuclear Cd clusters. Complex 3 is an extended 3D (3,10)-c network based on trinuclear Mn clusters, which belongs to 3,10T3 (MOF.ttd). Complex 2 exhibits potential application for the luminescence sensing of nitrobenzene derivatives. Furthermore, the variable-temperature magnetic susceptibilities of complexes 1 and 3 indicate that they exhibit antiferromagnetic behavior and ferromagnetic behavior between metal ions, respectively. [ABSTRACT FROM AUTHOR]

Two new coordination compounds, { Pb(pymt) 2 } ∞ ( 1 ) and { Pb(mpymt) 2 } ∞ ( 2 ) (pymt = pyrimidine-2-thiolate and mpymt = 4-methyl-pyrimidine-2-thione) have been synthesized under solvothermal conditions and characterized by elemental analyses, IR spectroscopy, thermogravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. In compounds 1 and 2 , pymt − and mpymt − adopt the same coordination modes ( μ −1 κ N, S and μ 2 −1 κ N, S: 2 κ S, N) to interacted with Pb 2+ , however, different topology structures for compounds 1 and 2 are obtained. Compound 1 displays a one-dimensional (1D) ribbon with square cavity constructed from two double concentric chains of [Pb-S] ∞ and [Pb-Pyrimidine] ∞ sharing Pb1 ions. Compound 2 shows 1D polymeric single chain constructed by [Pb-S] ∞ and [Pb-methyl-pyrimidine] ∞ chains. The results revealed that the methyl groups don't influence the coordination modes of pyrimidine-2-thiolate but directed the structural variations. Moreover, the fluorescent properties of compounds 1 and 2 were investigated. [ABSTRACT FROM AUTHOR]

Three novel transition-metal coordination polymers {[Mn 2 (qptc 4 − )(1,4-bib)(H 2 O) 2 ]·2H 2 O} n ( 1 ), [Cd 2 (qptc 4 − )(phen) 2 ] n ( 2 ) and [Ni 2 (qptc 4 − )(1,4-bib)(H 2 O) 8 ] n ( 3 ) (H 4 qptc = 1,1′:4′,1″:4″,1‴-quterphenyl-2,4,2‴,4‴-tetracarboxylic acid, 1,4-bib = 1,4-bis(1-imidazolyl) benzene and phen = 1.10-phenanthroline), have been synthesized hydrothermally, and characterized by single crystal X-ray diffraction, elemental analysis (EA), infrared spectroscopy (IR), and powder X-ray diffraction (PXRD). The single-crystal X-ray diffraction analysis shows that these polymers exhibit different types of structures, featuring 3D network ( 1 and 2 ) and a 1D chain ( 3 ) by varying reaction conditions. Polymer 1 consists of infinite 2D networks pillared by 1,4-bib bridging ligand, giving a 4,6-connected porous 3D framework with the point symbol (4 4 .6 10 .8)(4 4 .6 2 ). Polymer 2 is a 4,4-connected binodal 3D network with the topological type of lvt. Polymer 3 possesses a 1D zigzag chain structure, and the adjacent chains are further connected into a 3D supramolecular by non-covalent interactions involving contributions from carboxyl-water clusters. The magnetic susceptibility of polymers 1 and 3 , and fluorescent property of polymer 2 was also investigated. [ABSTRACT FROM AUTHOR]

A novel coordination polymer with the chemical formula [Cu4Br(CN)(mtz)2]n (mtz = 5-methyl tetrazole) (1), has been synthesized under solvothermal conditions and characterized by elemental analysis, infrared (IR) spectroscopy, thermal gravimetric analysis, powder X-ray diffraction and single-crystal X-ray diffraction. Interestingly, the Cu(i), CN− and mtz− in compound 1 are all generated from an in situ translation of the original precursors: Cu2+, acetonitrile and 1-methyl-5-mercapto-1,2,3,4-tetrazole (Hmnt). The in situ ring-to-ring conversion of Hmnt into mtz− was found for the first time. Structural analysis reveals that compound 1 is a novel 3D tetrazole-based Cu(i) coordination polymer, containing both metal halide cluster Cu6Br2 and metal pseudohalide cluster Cu2(CN)2 secondary building units (SBUs), which shows an unprecedented (3,6,10)-connected topology. Notably, a pseudo-porphyrin structure with 16-membered rings constructed by four mtz− anions and four copper(i) ions was observed in compound 1. The fluorescence properties of compound 1 were investigated in the solid state and in various solvent emulsions, the results show that compound 1 is a highly sensitive naked-eye colorimetric sensor for NB and 2-NT (NB = nitrobenzene and 2-NT = 2-nitrotoluene). [ABSTRACT FROM AUTHOR]

Nine 3D isomorphic bimetallic coordination polymers with different alkali metals (Na, K, and Rb) and halides (Cl, Br, and I) have demonstrated that the 4,5-dicyanoimidazole ligand is a good template in the assembly of bimetallic–organic networks. This provides an excellent template for the investigation of ion exchange and single-crystal to single-crystal (SCSC) transformation. The series of coordination polymers shows an unprecedented (3,4,6)-connected (5·72)6(52·6·73)6(56·66·73) net with a high topology density. [ABSTRACT FROM AUTHOR]

A silver(I) coordination polymer with mixed 3,3′,5,5′-tetramethyl-4,4′-bipyrazole (bpz) and maleic acid, [Ag2(bpz)3(fum)]n(1, H2fum = fumaric acid), was synthesized under hydrothermal condition byin situisomerization of maleic acid to fumaric acid and characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, TGA, and single-crystal X-ray diffraction. The maleic acidin situisomerizes to fumaric acid and participates in the formation of1. Topologically, the structure of1features a rare 3-connected twofold interpenetrateddia-fnet with a point symbol of {4.142}. Compound1exhibits photoluminescence in the solid state with an emission maximum at 470 nm upon excitation at 365 nm at room temperature, which is attributed to intraligand or/and interligandπ → π* transition. With bpz andin situgenerated fumaric acid ligands, a new polymer of [Ag2(bpz)3(fum)]nwas synthesized under hydrothermal conditions. It presents a unique twofold interpenetrated 3-D network with a raredia-ftopology. If the Ag(I)⋯Ag(I) interaction is included in the simplification of the net, each Ag(I) is a 4-connected node, thus, a non-interpenetrated 4-connectedupdnet with a point symbol of {4.63.82} is obtained. [ABSTRACT FROM PUBLISHER]

Four new fpa-metal complexes, [Co(fpa)2(H2O)2] (1), [Cu(fpa)2(H2O)] (2), [Zn2(fpa)4(bpp)2]n(3), and {[Zn(bpy)(H2O)4] · 2(fpa)}n(4), have been synthesized and fully characterized by elemental analyses, IR spectroscopy, single-crystal X-ray diffraction, and thermogravimetric analysis (TGA), (Hfpa = 2,2-difluoro-2-(pyridine-2-yl)acetate, bpp = 1,3-bis(4-pyridyl)propane, bpy = 4,4′-bipyridine). X-ray diffraction analyses reveal that1and2with 0-D structures are both extended into 3-D supramolecular networks through hydrogen bonds and π···π interactions. Complex3with chiral centers possesses a 1-D structure constructed by two kinds of bpp molecules and four kinds of fpa−molecules with different conformations, with bbp and fpa−bridging and capped ligands, respectively. In4, bpy links [Zn(H2O)4]2+into a 1-D polymeric cationic chain and uncoordinated fpa−compensates the framework charge. The results of TGA reveal that fpa−decomposes through two processes. Both3and4show strong fluorescence in the solid state at room temperature. [ABSTRACT FROM PUBLISHER]

By mixed-ligand strategy, three novel Ni-based CPs were obtained and characterized. In addition, magnetic studies have shown that the three CPs can be used as magnetic materials. • By mixed-ligand strategy, three new CPs were synthesized and characterized. • The auxiliary ligands have great influence on the structures of the CPs. • CPs 1 - 3 have antiferromagnetic behaviors By the reaction of a rigid π-conjugated linker of H 4 L (5,5′-(1,3,6,8-tetraoxobenzo [lmn] [3,8] phenanthroline-2–7- diyl) bis-1,3-benzenedicarboxylic acid), nickel nitrate and N -donor auxiliary linkers under solvothermal conditions, three new Ni-based coordination polymers (CPs), namely {[Ni(L) 0.5 (1,4-bib)(H 2 O) 2 ]·2·5H 2 O·DMA} n (1), {[Ni(H 2 L)(4,4′-bibp)(H 2 O) 2 ]} n (2) and {[Ni(L) 0.5 (4,4′-bimb)(H 2 O) 2 ]·3·5H 2 O·2DMA} n (3) {1,4-bib = 1,4-bis(1-imidazoly)benzene, 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl, 4,4′-bimb = 4,4′-bis(imidazol-1-ylmethyl) biphenyl} have been synthesized and characterized by EA, TG, IR, PXRD and magnetic properties. The structural analysis indicates both 1 and 2 are 2D layer structures, which are further extended to 3D supramolecular structures by H-bonding and intermolecular π...π interactions. While 3 exhibits a complicated 3D structure with the topology symbol of {64.82}. The difference of the structures in CPs 1–3 is mainly attributed to different auxiliary linkers used. Meanwhile, magnetic properties of CPs 1 – 3 show that the descent of χ M T values is attributed to zero-field splitting (ZFS) effects of Ni2+ ions. In addition, on account of large Ni2+ Ni2+ separations within these frameworks, magnetic interactions between adjacent Ni2+ ions can be neglected. [ABSTRACT FROM AUTHOR]