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A heteronuclear Tb-Al complex (1) was obtained by pyridine-2,6-dicarboxylic acid (H2PDA), AlCl3 and Tb4O7 under hydrothermal condition. Single-crystal X-ray diffraction analysis reveals that 1 is an ion-pair and consists of [Al(H2O)6]3+ cation and [Tb(PDA)3]3- anion; the [Al(H2O)6]3+ cations and [Tb(PDA)3]3- anions are further connected by hydrogen bonds to construct a 3D NaCl-like topology. Lattice water molecules in 1 fabricate a cubic (H2O)8-octamer by hydrogen bonds, which is located in the void of 1. Luminescent property indicates efficient energy transfer from PDA3- ligand to Tb3+ in 1, exhibiting the typical green emission of Tb3+ in the visible region. [ABSTRACT FROM AUTHOR]

Three new transition metal complexes, [Zn(L1)2(OTs)(CH3OH)](TsO)·CH3OH (1), {[Zn(L2)(H2O)4](SiF6)·H2O}n (2) and {[Cd(L2)2(OTs)2]·2DMF}n (3), were prepared from pyridine thiazolone derivatives (where L1 = 2-[4-(2-pyridinyl)-2-thiazolyl]hydrazone, L2 = 2-[4-(3-pyridinyl)-2-thiazolyl]hydrazone) and characterized by 1H-NMR, elemental analysis (EA), and infrared spectra (IR). The crystalline behavior of L1 and 1–3 were analyzed by X-ray diffraction. In the structure of 1, L1 acts as a bidentate agent coordinating the Zn2+ ion through the pyridine nitrogen and thiazole nitrogen, while L2 bonded in a 2D structure by coordinating Zn2+ through the nitrogen atoms of two pyridine rings in the structure of 2. Additionally, with Cd2+ ions as connection points and the spatial extension of L2, 3 possesses an intricate 3D metal–organic framework. The luminescent properties for the ligands and complexes were investigated. The in vitro antimicrobial and antitumor activities were evaluated against ten pathogenic bacterial strains and four human cancer cell lines. [ABSTRACT FROM AUTHOR]

Two 4-(1H-1,2,4-triazol-1-yl)phenol (hptrz)-based transition metal complexes with different aromatic polycarboxylic acids as co-ligands, {[Cu2(H2O)4(hptrz)2(btec)]⋅2H2O}n (1) and [Cu(hptrz)2 (H2btc)2]·H2O (2) (H4btec = benzene-1,2,4,5-tetracarboxylic acid, H3btc = benzene-1,3,5-tricarboxylic acid), have been obtained, which were structurally characterized by single-crystal X-ray diffraction, elemental analysis, FT-IR spectra, thermogravimetric curves and luminescence spectra in detail. Structural analysis reveals that 1 is a 1-D infinite chain framework extended by btec4– anions, whereas 2 is isolated centrosymmetric mononuclear entities. In contrast, the neutral hptrz is a terminal ligand to complete the metal coordination sphere and it also helps to assemble the low-dimensional coordination sphere into a high-dimensional supramolecular architecture by O–H···O hydrogen-bonding interactions. Additionally, the high stability and luminescence emission suggest that 1 and 2 are good candidates for light emission materials. The magnetic features of 1 may be due to weak antiferromagnetic coupling between CuII ions which are separated by btec4– anions. [ABSTRACT FROM AUTHOR]

By introducing alkaline-earth metal ions (Mg2+, Ca2+, and Sr2+) as structure-directing agents, three new heterometallic complexes, Mg(H2O)6·[Cu2Mg(L)4(H2O)4]·4H2O (1), [CuCa(L)2(H2O)4]n (2) and [CuSr(L)2(H2O)4]n (3) [H2L = 4-(3-(pyridine-4-yl)-1H-1,2,4-triazol-5-yl)picolinic acid], have been synthesized under hydrothermal conditions and structurally characterized. H2L was in situ generated from hydrolysis of the well-known selective xanthine oxidase inhibitor topiroxostat. Complex 1 crystallizes in the space group P21/c and exhibits a zero-dimensional (0-D) structure containing the discrete [Mg(H2O)6]2+ cationic and [Cu2Mg(L)4(H2O)4]2– dianionic moieties. Complexes 2 and 3 are isostructural and crystallize in the space group C2/c, with one-dimensional (1-D) polymeric structure with infinite Cu(II)–Ca/Sr–carboxylate chains. The results reveal the significant influence of the alkaline-earth metal ions on the molecular structure. Their spectroscopic, thermal and solid-state luminescent properties have also been investigated. [ABSTRACT FROM AUTHOR]

Solvothermal reaction of a multidentate ligand (tetrakis[4-(1-triazolyl)phenyl]-methane (ttpm)), with Cd(NO3)2 afforded a cationic Cd(II) coordination polymer {[Cd(ttpm)·DMSO]·2NO3}n. Single-crystal X-ray diffraction analyses showed that ttpm belonged to the tetragonal space group I41/a, and 1 was a 2-D (4,4) network. 1-D channels along the c direction exist in the 3D stacking map to accommodate the charge-balancing NO3− anions. N2 adsorption/desorption experiments showed the framework had a BET surface area of 11.36 m2·g−1. Compared with luminescence of ttpm, 1 showed red-shifted luminescence spectra with higher intensity from the more rigid arrangement of the π systems. [ABSTRACT FROM AUTHOR]

The hydrothermal reaction of Ln(NO3)3·6H2O with H2tyia (H2tyia = 5-(triazol-1-yl) isophthalic acid) afforded the lanthanide organic frameworks (Ln-MOFs), [Eu2(tyia)3(H2O)3]n (1) and {[Ln2(tyia)3·(H2O)3]· 3H2O}n (Ln = Tb 2, Dy 3, Sm 4, Gd 5, and Nd 6). Compounds were characterized by routine methods: PXRD, elemental analysis, solid-state luminescence properties analysis, TGA, FT-IR, and single-crystal X-ray crystallography. In this work, the luminescent properties of 2, 4, 5, and 6 and the responsiveness of various chemical components contained in urine were investigated. These MOFs detect 1-naphthol (1-N), urinary thiodiglycolic acid (TDGA), uric acid (UA), and hippuric acid (HA), which are the final metabolites of carbaryl, vinyl chloride monomers, purine, and toluene, respectively. These new Ln-MOFs offer the potential for biomarkers or metabolic sensors and show excellent selective and sensitive luminescence detection of 1-N, TDGA, UA, and HA. [ABSTRACT FROM AUTHOR]

Two coordination polymers (CPs) based on Keggin-type [SiW12O40]4– (SiW12), [Zn2(bpy)2(SiW12O40)(DMF)8]·solvent (1) and [Zn2(bpy)(SiW12O40)(DMA)8]·2DMA (2) (bpy = 4,4′-bipyridine, DMF = N,N′-dimethylformamide; DMA = N,N′-dimethylacetamide), have been solvo-thermally synthesized and characterized by single crystal X-ray diffraction, powder X-ray diffraction, IR spectra, elemental analyses and thermogravimetric analyses. Both 1 and 2 are synthesized under similar conditions except DMF and DMA were used as the solvents for 1 and 2, respectively. Structural studies reveal that the supramolecular framework of 1 contains pumpkin-like voids, while 2 has a non-porous supramolecular framework. These results show that solvents play an important role in construction of the POM-based CPs. The luminescent properties for 1 and 2 have also been investigated. [ABSTRACT FROM AUTHOR]

Two coordination polymers (CPs) based on Keggin-type [SiW12O40]4– (SiW12), [Zn2(bpy)2(SiW12O40)(DMF)8]·solvent (1) and [Zn2(bpy)(SiW12O40)(DMA)8]·2DMA (2) (bpy = 4,4′-bipyridine, DMF = N,N′-dimethylformamide; DMA = N,N′-dimethylacetamide), have been solvo-thermally synthesized and characterized by single crystal X-ray diffraction, powder X-ray diffraction, IR spectra, elemental analyses and thermogravimetric analyses. Both 1 and 2 are synthesized under similar conditions except DMF and DMA were used as the solvents for 1 and 2, respectively. Structural studies reveal that the supramolecular framework of 1 contains pumpkin-like voids, while 2 has a non-porous supramolecular framework. These results show that solvents play an important role in construction of the POM-based CPs. The luminescent properties for 1 and 2 have also been investigated. [ABSTRACT FROM AUTHOR]

By changing the ancillary ligands, three new zinc-based coordination polymers (CPs), {[Zn(4,4′-bpy)(H2O)4]·(TDC)·(H2O)}n (1), [Zn(2,2′-dmbpy)(TDC)]n (2), and [Zn2(3,3′-dmbpy)(TDC)2]n (3) (H2TDC =2,5-thiophenedicarboxylic acid, 4,4′-bpy =4,4′-bipyridine, 2,2′-dmbpy =2,2′-dimethyl-4,4′-bipyridine, 3,3′-dmbpy =3,3′-dimethyl-4,4′-bipyridine) have been synthesized under the same reaction conditions (H2O, pH =7-8, and 140°C) and were structurally characterized. 1 is a linear chain structure and further connected into a 3-D structure through hydrogen bonds. 2 shows a 2-D (4,4) network when the dinuclear [Zn2(COO)4N2] building unit is regarded as a six-connected node. 3 has a twofold-interpenetrating 3-D zinc-organic framework pcu topology. Furthermore, 1-3 show strong photoluminescence at room temperature in the solid state, and the catalytic activities of 1-3 for degradation of methyl orange in a Fenton-like process have been investigated. The results suggest that the ancillary ligands influence the final resulting CPs. [ABSTRACT FROM AUTHOR]

The in situ ligand 2,3-pyrazinedicarboxylic acid (2,3-H2pzdc) mixed with 1,1′-(1,4-butanediyl)bis(benzimidazole) (bbbi) is used to form two coordination polymers ([Cd(2,3-pzdc)(bbbi)] (1) and [Cd2Cl3(2-pzc)(bbbi)2] (2)) under hydrothermal conditions. Complex 1 was obtained in the absence of in situ reaction and 2 was synthesized with 2,3-H2pzdc in situ generating 2-pyrazinecarboxylate (2-pzc−). The structural details reveal that 1 has a 3D framework with dia topology, and 2 is a 2D layer structure and develops a 3D supramolecular structure via strong π⋯π stacking interactions. The ligand effects were compared for the two frameworks. In addition, fluorescence properties and thermal stabilities of 1 and 2 in the solid were studied. [ABSTRACT FROM AUTHOR]

Three-coordinate copper halide complexes with a bidentate phosphine ligand have received much attention. Here, a series of three-coordinate dinuclear copper halide complexes containing a diphenylamino monodentate phosphine ligand, [CuX(dpnp)]2 (dpnp = N-[2-(diphenylphosphino)-4,5-dimethylphenyl]-N-phenylaniline, X = I (1), Br (2) and Cl (3)), were synthesized, and their molecular structures and photophysical properties were investigated. The structural analysis reveals that two copper(I) centers are bridged by two halogen ligands to form a dinuclear structure with a four-membered Cu2X2 ring. Crystal structures of 1–3 contain 1-D supramolecular arrays constructed by intermolecular C–H⋯π interactions. These complexes exhibit blue emission in the solid state at room temperature and have peak emission wavelengths at 483–487 nm with microsecond lifetimes (τ = 13.9–38.1 μs) and low emission quantum yields (<0.01%). The emission of complex 1 mainly originates from intraligand (IL) transition, whereas the emissions of complexes 2 and 3 are from a combination of MLCT, XLCT and IL transitions. The three complexes displayed good thermal stability. [ABSTRACT FROM AUTHOR]

[Hg2(L1)2I4] (1), [Cd2(L1)2I4] (2), {[Cd(L1)2(SO4)(H2O)]·4H2O}n(3), {[Zn2(L2)2(Cl)4]·0.5H2O} (4), {[Cu2(L2)2(SO4)2(H2O)4]·2.5H2O} (5), and {[Cd(L2)2(SO4)(H2O)]·3H2O}n(6), based on N–(3–picolyl)–N′–(3–pyridyl)urea (L1) or N–(4–picolyl)–N′–(3–pyridyl)urea (L2), have been synthesized and characterized by elemental analyses, IR spectra, single-crystal and powder X-ray diffraction, and thermogravimetric analyses. Complexes1and2are isomorphous and feature similar rectangular metal organic loops, which were further extended into 2-D supramolecular structures through hydrogen bonds. Complex3possesses a 2-Dsqlsheet, and the channels between the neighboring sheets are filled with lattice water molecules, which formed a 1-D water tape. Complex4also exhibits a rectangular metal organic loop and a 3-D supramolecular structure with the help of hydrogen bonding interactions. Complex5also possesses a metal organic loop, and the water molecules interacted with sulfates, constructing a 1-D water–sulfate tube. Complex6features a 1-D loop polymeric chain. Moreover, the solid state luminescences of1–4and6have been investigated. [ABSTRACT FROM AUTHOR]

Highly emissive three-coordinate copper halide complexes with a bidentate phosphine ligand have attracted attention. Here, a series of three-coordinate mono- and dinuclear copper halide complexes, [CuI(dpbp)2] (1) and [CuX(dpbp)]2(dpbp = 2-(diphenylphosphino)biphenyl, X = Br (2), Cl (3)), were synthesized, and their molecular structures and photophysical properties were investigated. In the solid state, these complexes exhibit green photoluminescence with microsecond lifetimes (λmax = 515–538 nm;τ = 11.8–19.1 μs) at 298 K. The emission of the complexes originates from the (σ + X) →π* transition. All three complexes displayed good thermal stability. [ABSTRACT FROM AUTHOR]

A new Dy(III) complex, [KDy(sbtc)(H2O)2]·2H2O (1) (KH3sbtc: 5-sulfo-1,2,4benzenetetricarboxylic acid potassium salt), has been synthesized by solvothermal reaction of Dy2O3and KH3sbtc, and characterized by single crystal X-ray diffraction studies, elemental analysis, and FTIR. Single crystal X-ray diffraction reveals that1has a 3-D architecture, and there is only one crystallographically independent Dy(III) and K(I) in1. The coordination geometry of Dy(III) is a distorted monocapped tetragonal antiprism and K(I) is also a distorted monocapped tetragonal antiprism. The whole sbtc4−is aμ8-bridge linking four different Dy(III) cations and four different K(I) cations, giving a 3-D network structure. Thermal stability and solid luminescence of1were also investigated. [ABSTRACT FROM AUTHOR]

Four coordination polymers based on 4′-(2H-tetrazol-5-yl)biphenyl-4-carboxylic acid (H2TBPC), [Zn(μ3-TBPC)(H2O)]n(1), [Zn(μ3-TBPC)(Me2NH)]n(2), [Cd(μ3-TBPC)(bpy)]n(bpy = 4,4′-bipyridine,3), and [Cd(μ4-TBPC)(H2O)]n(4), were constructed under hydrothermal conditions. The compounds are composed of M2(TBPC)2binuclear ring as a building block. In1–3, the binuclear rings are interconnected to three different 2-D networks with the same (4·82) topology. In4, the binuclear rings are arranged into a 3-D framework with PtS-type topology. The results revealed that the structural diversity is mainly attributed to the coordination geometries of metal ion, the coordination modes of TBPC2−, and the auxiliary ligand. The thermal stabilities and luminescent properties of1–4have also been studied. [ABSTRACT FROM PUBLISHER]

Four new coordination polymers, [Cd(3-TPTP)Cl]2(3-HTPTP = 4′-(3-tetrazolylphenyl)2,2′:6′2′′-terpyridine,1),{[Cd(3-TPTP)(pBDC)0.5]∙4H2O}n(pH2BDC = 1,4-benzenedicarboxylic acid,2), {[Mn(3-TPTP)(mBDC)0.5]∙5H2O}n(mH2BDC = 1,3-benzenedicarboxylic acid,3), and [Pb(3-TPTP)(H2O)2]∙OH (4), were obtained. Compounds1–3are composed of binuclear [M2(3-TPTP)2] ring as building unit. In1, the binuclear rings pack into a 3-D supramolecular framework via various hydrogen bonds. In2and3, the binuclear rings are connected bymBDC2−andpBDC2−, respectively, resulting in two types of 1-D chains. In4, the mononuclear [Pb(3-TPTP)] units are connected by Pb⋯N weak interactions, giving a chiral 1-D coordination chain, which is further connected by O–H⋯N interaction to form a chiral 3-D supramolecular framework. The phase purity of1–4and luminescence properties of1,2, and4were also investigated. [ABSTRACT FROM PUBLISHER]

Four lanthanide-nitronyl nitroxide radical complexes, [Ln(hfac)3(NIT-3Methien)2] (Ln = Pr (1), Tb (2), Dy (3), Ho (4); hfac = hexafluoroacetylacetonate; NIT-3Methien = 2-(3-methylthiophene)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide), have been synthesized, and structurally and magnetically characterized. Single-crystal X-ray diffraction shows that1–4have similar mononuclear tri-spin structures in which central Ln(III) ions are eight coordinate by two NIT-3Methien radicals and three hfac coligands. The magnetic studies indicate that there are antiferromagnetic interactions between Ln(III) ions and radicals in1,2, and4, while ferromagnetic interactions are present in3. The luminescence properties of2and3were studied. [ABSTRACT FROM AUTHOR]

Two new coordination polymers based on 1,1′-(1,4-butanediyl)bis(imidazole) (bbi) and 5-hydroxyisophthalic acid (OH-BDC), [Co2(HO-BDC)2(bbi)2]·H2O (1) and [Zn(HO-BDC)(bbi)] (2), have been hydrothermally synthesized. The complexes were characterized by single-crystal X-ray diffraction, IR, and elemental analysis. The structure determination reveals that1manifests a deeply corrugated 2-D layer with a (4,4) lattice. For2, there is a highly undulating 2-D (4,4) layer structure. The layers penetrate by each other to give a 2-D → 3-D parallel interpenetrating network. Fluorescence properties and thermal stabilities of1and2in the solid state have been studied. [ABSTRACT FROM AUTHOR]

Two isomorphic acetylacetone-based complexes:trans-bis(acetylacetone)-1,4cyclohexanediimine (TBAC) andcis-bis(acetylacetone)-1,4-cyclohexanediimine (CBAC) were designed to promote complex formation on reaction with AgX (X = ,,,, and) and were employed to generate nine silver coordination polymers (CPs), {[Ag(TBAC)]·2H2O·BF4}n(1), [Ag(TBAC)0.5(NO3)]n(2), [Ag2(TBAC)2(ClO4)2]n(3), [Ag(TBAC)(CF3SO3)(H2O)]n(4), {[Ag(TBAC)2]·SbF6}n(5), {[Ag(CBAC)]·BF4}n(6), {[Ag(CBAC)(H2O)]·ClO4}n(7), {[Ag(CBAC)(H2O)]·CF3SO3}n(8), and {[Ag(CBAC)(H2O)]·SbF6}n(9) that exhibit structural and topological diversity as determined by single-crystal X-ray diffraction analyses. The complexes were further characterized by elemental analyses, IR spectra, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Complex1exhibited a 3-D (4,4)-connected pts topology with the Schläfli symbol of (42·84). Theanions in2areμ2-bridging linkers, connecting the 1-D [Ag(TBAC)0.5]nchains to 2-D (3,4)-connected nets. In3, TBAC is a tridentate ligand to bind Ag(I) ions to form a 1-D ladder-like supramolecular structure. Complex4has 2-D (3,3)-connected nets where both Ag(I) ions and TBAC ligands are 3-connected nodes. Complex5has a 1-D fishbone chain structure where some of the TBAC moieties are bidentate. Thecis-isomer, CBAC, gives similar (3,3)-connected networks where the Ag(I) ions and CBAC ligands are 3-connected nodes in the resultant6–9. Although the host networks in6–9are supramolecular isomers, structural comparisons revealed that use ofcis-andtrans-isomers of the ligand and different counterions significantly influence the structures. The luminescent properties of all complexes and ligands were investigated. [ABSTRACT FROM PUBLISHER]

A series of tetranuclear lanthanide compounds, [Ln4(μ3-OH)2L4(NO3)2(DMF)2] (H2L = 2-(2-hydroxy-3-methoxybenzylideneamino)phenol; Ln = Dy (1); Tb (2); Er (3); and Gd (4)), have been prepared under hydrothermal conditions. X-ray crystal structure analysis reveals that1–4are polymorphs. The cores of the structures can be described as co-planar defect-dicubane. The solid-state luminescent properties indicate that the LnIIIions have very deep influence on the luminescence of H2L. The magnetic properties for1–4were studied. The Dy4complex exhibits single-molecule magnet behavior. A series of tetranuclear lanthanide compounds have been prepared. The Dy4complex exhibits single-molecule magnet behavior. [ABSTRACT FROM AUTHOR]

Three metal-organic coordination polymers based on 4-(1H-l,3-benzimidazol-2-yl)pyridine 1-oxide (BImPyO) with the molecular structures [Cu2(C12H8N3O)2]n(1), [Cu(C12H8N3O)]n(2), and [Zn(C12H8N3O)Cl]n(3) were synthesized under hydrothermal conditions. They showed diverse coordination modes and were further characterized by elemental analysis, infrared spectroscopy, and single crystal X-ray structure analysis, respectively. In1and2, BImPyO generated a 1-D chain by adopting?2-kN?:?kN? coordination to bridge two Cu(II) ions with bis-N-chelation. In3, by adopting?3-kN?:?kN?:kO coordination, BImPyO bridged three crystallographically independent Zn(II) ions to form a 3-D framework;3exhibits strong fluorescent emission in the solid state at room temperature. [ABSTRACT FROM AUTHOR]

Two new coordination polymers, [Mn(1,4-BDC)(bimb)0.5]n(1) and [Mn(Hbtc)(bimb)0.5]n(2) (1,4-H2BDC = 1,4-benzenedicarboxylic acid, H3btc = 1,3,5-benzenetricarboxylic acid and bimb = 1,4-bis(1-imidazol-yl)-2,5-dimethyl benzene), have been hydrothermally synthesized by reactions of Mn(II) salt with a rigid 1,4-bis(1-imidazol-yl)-2,5-dimethyl benzene and varying carboxylate ligands. Complex1is a binodal (3,7)-connected 3-D architecture with point symbol (44.617).(63). Complex2is a (3,6)-connected 3-D structure with point symbol (3.4.5).(32.42.5.63.72). The luminescent properties of1and2were investigated in the solid state at room temperature. [ABSTRACT FROM AUTHOR]

Three copper complexes constructed with sulfur-bridged bis-pyridine ligands 2,2′-dithiodipyridine (dtdp) and di-2-pyridyl sulfide (dps), [Cu2(dps)2(H2O)2(μ-SO4)2]·(H2O)2(1), [Cu2I2(dps)2] (2), and [Cu4I4(dtdp)2] (3), have been synthesized by reaction of copper(I) iodide with dtdp under solvothermal and solution-diffusion conditions, and characterized by single crystal X-ray diffraction. The dps ligands were generated viain situcleavage of S–S and S–C(py) bonds of dtdp. Cu ions are divalent in1, implying involvement of the starting Cu+cations in a redox process, while the Cu ions remained univalent in2and3. In1and2, the dps adopted N,N-chelate coordination, in contrast to the N,S-chelation of the dtdp ligand in3. Complex1displays a 2-D framework linked by hydrogen bonds and was further connected into a 3-D supramolecular structure byπ–πstacking interactions between adjacent layers. Complexes2and3exhibited 2-D layer structures throughπ–πstacking interactions. The luminescent properties of2and3were also studied in the solid state at room temperature. [ABSTRACT FROM PUBLISHER]

An isophorone-based ligand with a delocalized π-electron system, 2-{5,5-dimethyl-3-[2-(pyridine-4-yl)ethenyl]cyclohex-2-enylidene}propanedinitrile (L), was synthesized. By assembling the ligand with AgNO3, a mononuclear complex [Ag(L)2]NO3·H2O was obtained. Compared with the free ligand, the complex shows superior luminescent properties with large red-shift and longer fluorescence lifetime. The ligand in the Ag(I) complex shows more planar structure than the free ligand. Therefore, red shift emission and longer lifetime were realized by coordination of Ag(I) to the ligand. [ABSTRACT FROM AUTHOR]

Two new coordination polymers, {[Pb(HMPCA)2]}n(1) and {[Sr(HMPCA)2(H2O)2]·H2O}n(2) (H2MPCA = 5-methyl-1H-pyrazole-3-carboxylic acid), have been synthesized and characterized by elemental analysis, IR spectroscopy, X-ray diffraction, and thermogravimetric analysis. Compound1forms a one-dimensional (1-D) chain, and a two-dimensional (2-D) supramolecular framework is constructed by hydrogen bonding. The HMPCA–in1adopts two coordination modes, a N,O-chelate and aμ3-κN, O:κO, O′:κO′ mode. The structure of2is a 1-D Sr–O–Sr chain built up by two waters bridging a pair of distrontium [Sr(H2O)(HMPCA)(μ2-HMPCA)]2units, and the chains are further extended into a 2-D supramolecular layer via hydrogen bonds. In addition to a N,O-chelate, the HMPCA–in2exhibit a third coordination mode,μ2-κN, O:κO. The thermal decomposition and luminescent properties of1and2in the solid state have also been investigated. Two new 1D coordination polymers, {[Pb(HMPCA)2]}n(1), bridged by HMPCA−, and {[Sr(HMPCA)2(H2O)2]·H2O}n(2), connected by the HMPCA−and bridging waters, have been obtained via the reactions of H2MPCA with metal salts. [ABSTRACT FROM PUBLISHER]

Solvothermal reactions of Pb(OAc)2·2H2O with 4,4?-azodibenzoic acid (H2L) in DMSO (DMSO?=?dimethyl sulfoxide) and DMF/H2O (DMF?=?N,N?-dimethylformamide) at 90?°C gave two Pb(II) coordination polymers (CPs), [PbL(DMSO)]n(1) and [PbL(H2O)]n(2). Complexes1and2were characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction, and single-crystal X-ray diffraction. Compound1possesses a 2-D staircase-like network based on pairs of left and right helical 1-D [Pb(CO2)2(DMSO)]nchains, and is further assembled into a 3-D supramolecular architecture with a 41263topology through intermolecular hydrogen bond interactions between the neighboring networks. Within the 1-D Pb–O–Pb chain, the DMSO terminally coordinates to Pb(II). Complex2has a 3-D motif containing 2-D Pb-carboxylate layers with H2O bridging neighboring Pb ions in a 4664topological structure. The formation of1and2provides insight into the effect of solvents on the construction of CPs under solvothermal conditions. Stabilities and photoluminescent properties of1and2were also investigated. [ABSTRACT FROM AUTHOR]

Three copper(II) isomers, [Cu(dtcd)(DNBA)2]n(1–3) (HDNBA = 3,5-dinitrobenzoic acid, dtcd = N,N-di(4H-1,2,4-triazole)cyclohexane-1,4-dicarboxamide), were synthesized in a one-pot reaction, and structurally characterized. Polymer1shows a 1-D single chain in which dtcd connect adjacent Cu2+ions, while DNBA?is monodentate. In2, every two Cu2+ions are linked by carboxylate of a DNBA?in a chelate-bridging mode into a binuclear unit, which is further connected by dtcd ligands into a 1-D double chain. In3, dtcd connect Cu2+ions via triazole nitrogens to generate 1-D single chains, which are further extended into a 2-D network by the amide oxygens of a dtcb from an adjacent chain. The pH plays an important role in product distribution of1–3. The coordination behaviors of dtcd and DNBA?also influence the final structures. Luminescent properties of1–3have been investigated. [ABSTRACT FROM PUBLISHER]

Two complexes, [Cd(ip-OH)(H2biim)(H2O)][Cd(ip-OH)(H2biim)(H2O)3]-8(H2O) (1) and [Cd(Himdc)( H2biim)]n (2) (H2ip-OH = 5-hydroxylisophthalic acid, H2biim = 2,2'-biimidazolate, H3imdc = 4,5- imidazoledicarboxylic acid), have been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. 1 is a 3-D supramolecular network constructed by 0-D and 1-D • it interactions. Complex 2 is a 1-D zigzag polymeric coordination chain and the chains are connected to form a 3-D supramolecular network by hydrogen bonds. The complexes were characterized by elemental and thermogravimetric analyses. Fluorescence was also investigated. [ABSTRACT FROM AUTHOR]

Two CuIIcoordination polymers {[Cu(BDC-I4)(MeOH)4](H2BDC-I4)(MeOH)2}n(1) and [Cu(BDC-I4)(dioxane)(MeOH)2]n(2) with a rigid periodinated ligand 2,3,5,6-tetraiodo-1,4-benzenedicarboxylic acid (H2BDC-I4) have been synthesized and characterized by elemental analysis, IR spectroscopy, and X-ray crystallography. Complex1presents a one-dimensional (1-D) linear structure, further assembled to form a two-dimensional (2-D) layer through inter-chain O–HI, O–HO, or C–weak interactions. Complex2shows a 1-D zigzag structure that is extended into a 2-D supramolecular network by intermolecular O–HO hydrogen bonds. The CuIIin1has a distorted octahedral (CuO6) coordination sphere, whereas CuIIin2displays a nearly ideal square-pyramidal (CuO5) coordination. The structural differences between1and2imply that solvent plays an important role in the construction of coordination architectures. In addition, the luminescent properties of H2BDC-I4,1and2in the solid state were investigated. [ABSTRACT FROM AUTHOR]

Two new supramolecular compounds, [Zn2(L)3(4,4′-bpy)(OH)]n(1) and [Cd(L)2(2,2′-bpy)(H2O)]·2H2O (2) (HL = 2-(4-isopropylbenzoyl)benzoic acid, 4,4′-bpy = 4,4′-bipyridine, 2,2′-bpy = 2,2′-bipyridine), have been hydrothermally synthesized and characterized by elemental analysis, infra-red spectroscopy, thermal gravimetric analyzes, and single-crystal X-ray diffraction.1exhibits 1-D chain and2is 0-D mononuclear. They are both linked into 2-D supramolecular layers by non-covalent interactions. Luminescence properties were also investigated. [ABSTRACT FROM AUTHOR]

To further explore the coordination possibilities of naphthalene-based carboxylic acids, a ZnII coordination polymer, [Zn3(L)6(bipy)2]n (1), with bulky 2-naphthol-5-carboxylate (L) and bridging 4,4'-bipyridine (bipy), was synthesized and characterized. Structural analysis reveals that 1 is a 1-D polymeric chain with trinuclear units as nodes, which are further extended via interchain secondary interactions, such as O-H ··· O hydrogen-bonding and aromatic π ··· π stacking interactions, to form an overall 3-D framework. Complex 1 exhibits strong solid-state luminescence emission at room temperature, mainly originating from intraligand π→π* transition of L. [ABSTRACT FROM AUTHOR]

Two organic-inorganic hybrid materials built from copper-glycin complexes and paradodecatungstates, Na6[{Cu(gly)(H2O)}]2[{Cu(H2O)}(H2W12O42)] ⋅ 21H2O (1) and Na{Na(H2O)6}{Na(H2O)4}3[{Cu(gly)2}]2{H5(H2W12O42)} ⋅ 8.5H2O (gly = glycin) (2), have been synthesized in aqueous solution and characterized by IR, UV, TG, elemental analysis, electrochemistry, and single-crystal X-ray analyses. In 1, [H2W12O42]10- building block connects two neighboring clusters with [Cu(H2O)]2+ groups to produce an infinite 1-D chain; then these chains are linked through [Cu(gly)(H2O)]+ groups to form a 2-D layer structure, which is further joined by Na+ to form a 3-D network. In 2, [H2W12O42]10- decorated by two [Cu(gly)2] moieties connects four adjacent clusters with six Na+ into a 2-D layer. In addition, luminescence and photocatalysis properties of these compounds have been investigated. [ABSTRACT FROM AUTHOR]

A novel zinc-molybdenum(V) phosphate hybrid polymer, Zn[Mo6O12(OH)3(PO4)2(HPO4)2]2[Zn6(H2O)8(phen)4] ··· 6H2O (phen = 1,10-phenanthroline), was prepared under hydrothermal conditions and characterized by single-crystal X-ray diffraction, FT-IR, TGA and EPR spectra. The crystal structure analyses show that the compound is built from two anionic hexameric polyoxomolybdophosphate [Mo6O12(OH)3(PO4)2(HPO4)2]7- moieties, bridged by a central octahedral Zn2+ centre. The sandwich-type Zn[Mo6P4]2 dimers are connected via additional Zn2+ polyhedra, forming a two-dimensional network polymer. The luminescent properties of the title compound are also discussed. [ABSTRACT FROM AUTHOR]

Assembly of [Ag(CN) 2 ] - units with diaminecopper(II) cation [Cu(pn) 2 ] 2+ (pn&ThickSpace;=&ThickSpace;1,3-diaminopropane), gives the ionic complex [Cu(pn) 2 ][Ag 3 (CN) 5 ]. Single crystal X-ray analysis shows that this complex crystallizes in the triclinic, space group , a &ThickSpace;=&ThickSpace;7.675(3), b &ThickSpace;=&ThickSpace;8.707(4), c &ThickSpace;=&ThickSpace;8.807(4)&ThickSpace;Å, α &ThickSpace;=&ThickSpace;66.624(7), β &ThickSpace;=&ThickSpace;67.045(7), γ &ThickSpace;=&ThickSpace;79.179(7)°, Z &ThickSpace;=&ThickSpace;1. The whole complex has 3D architecture through metal–metal interactions and other weak interactions. The complex displays weak luminescence determined by argentophilicity at room temperature in the solid state. [ABSTRACT FROM AUTHOR]