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The CIE 1931 Chromaticity diagram for the NPbBP: xSm3+ phosphors at the room temperature and for the NPbBP: 0.03Sm3+ phosphors in the temperature range (303 K- 483K) [Display omitted] • The novel orthophosphate NaPbBi (2-x) (PO 4) 3 : xSm3+ phosphors were synthesized via conventional solid state reaction method. • The crystal structure and luminescent properties of NaPbBi (2-x) (PO 4) 3 : xSm3+ were systematically investigated. • The reddish-orange light emitting phosphor with high color purity (99.4 %) was obtained. The red phosphor for light application is in high demand. In this regard, a series of orange-red phosphors, NaPbBi 2 (PO 4) 3 : Sm3+, with a single phase were obtained by the conventional solid state reaction method. The X-ray diffraction (XRD) confirms that the phosphor belongs to the cubic structure with a space group I-43d (220). The optical property of the phosphor was studied through the diffuse reflectance spectroscopy measurements and the characteristic peaks of the Sm3+ ions were identified. Exciting the phosphors at 404 nm, produced a strong orange-red emission at 601 nm. The optimum concentration of the phosphor was found to be 0.03 mol. In all emission transitions of the Sm3+ ions within the host lattice, the energy transfer (ET) occurs among the nearest neighbour ions. The lifetime values were in the order of milliseconds. The photometric parameters revealed that the emission lies in the orange-red region with color coordinates (0.5863, 0.4129) and a color purity of 99.4 %. The temperature dependent luminescence properties of the phosphor were also investigated and all these results showed that the phosphor could serve as a good candidate for light/light sensing applications. [ABSTRACT FROM AUTHOR]

A new Co(II)-MOF [NH 2 (CH 3) 2 ][Co 1.5 (abtc)]·H 2 O (1) (H 4 abtc: 3,3′,5,5′‑azobenzenetetracarboxylic acid) has been solvothermally synthesized and characterized. Complex 1 is a three-dimensional {Co 3 }-based framework with one-dimensional channels bridged by the μ 2 -bridging abtc ligand, resulting in a (4, 8)-connected topology. Luminescent studies reveal that complex 1 shows weak emission in solid state at room temperature, but the emission intensities have greatly enhanced in both liquid suspensions and solid state after immersion in acetonitrile solvent. A new (4,8)-connected Co(II)-MOF (1) based on azobenzenetetracarboxylate ligand was synthesized and characterized. Luminescent studies reveal that complex 1 has acetonitrile sensing property through enhancement of the luminescence. Unlabelled Image • A porous MOF was constructed from azobenzenetetracarboxylate and cobalt ions • Complex 1 feature 3D frameworks with a new (4, 8)-connected topology • Complex 1 shows remarkably enhanced luminescence intensity for acetonitrile sensing • The enhanced luminescence intensity is observed upon the recycling for five times [ABSTRACT FROM AUTHOR]

Two transition metal-organic frameworks, [Zn 2 (2,2′-dmbpy)(2-stp)(μ 2 -OH)] n (1), and {[Cd 3 (3,3′-dmbpy) 2 (2-stp) 2 (H 2 O) 2 ]·6(H 2 O)} n (2) (2-H 2 stpNa = 2-sulfoterephthalic acid monosodium salt, 2,2′-dmbpy = 2,2′-dimethyl-4,4′-bipyridine, 3,3′-dmbpy = 3,3′-dimethyl-4,4′-bipyridine) have been synthesized and were structurally characterized. Complex 1 exhibits a two-fold interpenetrated 3D framework with 6-connected pcu topology and is comprised of tetranuclear zinc units {Zn 2 (COO) 4 (SO 3) 2 (OH) 2 } bridged by 2-stp ligands in the a and c directions and further pillared by 2,2′-dmbpy struts approximately in the b direction. Complex 2 shows a 3D network with 4,4-connected frl topology. Furthermore, the luminescence and the catalytic activities of 1 – 2 for the degradation of methyl orange in a Fenton-like process have also investigated. Two new 3D transition metal-organic frameworks were obtained by reacting 2-sulfoterephthalic acid monosodium salt and methyl-functionalized N-donor ligands with zinc(II) nitrate hexahydrate and/or cadmium nitrate tetrahydrate, in which show 6-connected pcu and (4,4)-connected frl topology, respectively. Furthermore, the luminescence property and the catalytic activity of 1 – 2 for the degradation of methyl orange in a Fenton-like process have also investigated. Unlabelled Image • Two new 3D transition metal-organic frameworks with pcu and frl topology, respectively • Title compounds represent the first examples of 3D MOFs based on 2-H 2 stp and 2,2′-dmbpy and/or 3,3′-dmbpy. • Luminescent properties of 1 – 2 were explored. • 1 shows higher catalytic activities than 2 for the degradation of methyl orange dye in a Fenton-like process. [ABSTRACT FROM AUTHOR]

Abstract The solvothermal reaction of CdCl 2 or CuCl 2 with a pyridine-pyrazole bifunctional ligand 3,5‑diethyl‑4‑(4‑pyridyl)‑pyrazole (Hdeppz) under different solvents afforded two coordination polymers [Cd(Hdeppz) 2 (Cl) 2 ] n (1) and [Cu 4 ICuII(deppz) 4 (Cl) 2 ] n (2), respectively. Owing to different coordinated modes of Hdeppz and metal ions, 1 and 2 display different grid layer structures. In 1 , the neutral Hdeppz ligand behaves as a linear linker to connect two Cd2+ ions, while 2 contains not only the Y-shaped deppz linker but also the mixed valence of Cu+ and Cu2+ ions. Meanwhile, an uncommon Cu 4 (pz) 4 metallocyclic unit is formed in 2 , and which further produces an unprecedented (CuIICl 2 CuI 4) n supramolecular chain by Cu···Cl interactions. The strong solid-state blue-green luminescence was also observed in 1. Graphical abstract Two new coordination polymers were constructed by a pyridine-pyrazole bifunctional ligand, revealing novel 3D supramolecular frameworks and strong luminescent properties. Unlabelled Image Highlights • Two coordination polymers based on a pyridine-pyrazole bifunctional ligand • Rare Cu 4 (pz) 4 ring and Cu⋯Cl supramolecular chain were found. • Strong luminescence property was observed in Cd(II) complex. [ABSTRACT FROM AUTHOR]

Two transition metal-organic frameworks, [Ni 2 (3,3′‑dmbpy)(TDC) 2 (μ 2 -OH)] n ( 1 ), and [Cd(2,2′‑dmbpy)(TDC)] n ( 2 ) ((H 2 TDC = 2,5‑thiophenedicarboxylic acid, 2,2′‑dmbpy = 2,2′‑dimethyl‑4,4′‑bipyridine, 3,3′‑dmbpy = 3,3′‑dimethyl‑4,4′‑bipyridine) have been synthesized and were structurally characterized. MOF 1 exhibits 3D network with 8-connected 8T36 topology and is comprised of dimeric nickel units {Ni 2 (COO) 4 (μ 2 -OH)} bridged by TDC ligands in the a and b directions and further pillared by 3,3′‑dmbpy struts approximately in the c direction. MOF 2 performs a five-fold interpenetrated 3D framework with 4-connected dia topology and is comprised of an infinite cadmium-carboxylate chain {Cd( μ 2 -OOC chelating ) 2 } n bridged by TDC ligands in the c direction and further pillared by 2,2′‑dmbpy struts approximately in the a and b directions. Furthermore, the magnetism of 1 , the luminescence of 2 , and the catalytic activities of 1 – 2 for the degradation of methyl orange in a Fenton-like process have also investigated. [ABSTRACT FROM AUTHOR]

Reactions of CuCl 2 , K 2 [Ni(CN) 4 ]/K 3 [Co(CN) 6 ], and 5-amino-1H-tetrazole led to cyanide-bridged mixed-valence Cu(II/I) complexes, [Cu(H 2 O) 3 Cu 3 (CN) 5 ] ( 1 ) and [Cu(H 2 O) 4 ][Cu 4 (CN) 6 ] ( 2 ).The uncommon semi-closed {Cu 2 (CN) 3 } dimmers in 1 are bridged by μ 3 -C,C,N cyanide ligands to afford rare 1D centipedal-like chain motifs, which are further bridged by μ 2 -C,N and metalloligand “CN–Cu(4)–CN” to finish sophisticated zeolite-like 3-D structure. Topologically, 1 is the first example of uninodal 7-connected sev -like cyanide-bridged network. Compound 2 consists of two-dimensional honeycomb-related anionic layers [Cu 4 (CN) 6 ] 2 − , within which the [Cu(H 2 O) 4 ] 2 + cations are intercalated into alternate interlamellar space. Compound 1 shows antiferromagnetic couple arising from pure ground-state configuration of Cu(II) mediated by diamagnetic bridges –CN–Cu I –CN −. The inclusion compound 2 shows blue photoluminescence originated from Cu(I) center to the unoccupied π* orbital of the cyanide ligand (MLCT) charge transfer. [ABSTRACT FROM AUTHOR]

Two new coordination polymers, [Zn 2 (cptpy) 2 Cl 2 ] n ·0.5nH 2 O ( 1 ) and [Cd 2 (cptpy) 4 ] n ·3.5nH 2 O ( 2 ) (Hcptpy = 4′-(4-carboxyphenyl)-4,2′:6′,4″-terpyridine), were synthesized under hydrothermal conditions and characterized by elemental analysis, IR and single crystal X-ray diffraction. Compound 1 shows a new two-fold interpenetrating 3-connected 2D framework with the hcb topological net and the Schläfli symbol of 6 3 . Compound 2 displays a two-fold interpenetrating (4,4)-connected 2D framework with the sql topological net and the Schläfli symbol of {4 4 · 6 2 }. Interestingly, compounds 1 and 2 were obtained in the similar reaction conditions. The structural diversity of compounds 1 and 2 may illustrate the marked effect of the metal ion of the reaction solution. Additionally, photoluminescence properties of compounds 1 – 2 have been investigated. [ABSTRACT FROM AUTHOR]

A new supramolecular architecture, {[Zn(FDC)(phen)(H 2 O)]·0.5H 2 O} n ( 1 ), was obtained from mixed rigid ligands [9-fluorenone-2,7-dicarboxylic acid (H 2 FDC), 1,10-phenanthroline (phen)] and zinc(II) nitrate under hydrothermal reactions, which displays a charming 1D → 3D polycatenated motif based on 1D single-armed polymeric chains via powerful π π stacking interactions. In addition, the thermal stability and photoluminescence property of 1 were also investigated. [ABSTRACT FROM AUTHOR]

A novel lanthanide coordination polymer, (H 2 pipz) 3 [Tb 2 (pydc) 6 ]·15H 2 O ( 1 ) (where pipz = piperazine and H 2 pydc = pyridine-2,6-dicarboxylic acid), has been hydrothermally synthesized and characterized by single-crystal X-ray diffraction, infrared spectroscopy, element analysis and thermogravimetric analysis. The most interesting structural feature of 1 consists in the occurrence of one-dimensional infinite water chains made up of novel (H 2 O) 20 clusters. 1 is extended into a three-dimensional supramolecular network structure via an extensive net of hydrogen bonds together with π–π stacking interactions. In addition, 1 was demonstrated to display a green fluorescence emission in the solid state at room temperature. [ABSTRACT FROM AUTHOR]

Three novel microporous zinc MOFs, [Zn 3 (EBTC) 2 ]∙2(CH 3 ) 2 NH 2 ∙ 0.5DMSO∙3H 2 O ( 1 ), [Zn(EBTC) 0.5 (BPY)]∙2DMSO∙0.5DMF∙2H 2 O ( 2 ) and [Zn 2 (EBTC)(BPP) 2 ]∙3DMSO∙2DMF∙5H 2 O ( 3 ) (EBTC = 1,1′-ethynebenzene-3,3′,5,5′-tetracarboxylate, BPY = 4,4′-bipyridine, BPP = 1,3-bi(4-pyridyl)propane), have been synthesized under solvothermal conditions. The versatile coordination modes of EBTC are the key to such diverse MOFs. The results of X-ray single diffraction analyses indicate that 3D microporous MOF 1 with fla topology possesses 2D [Zn 3 (EBTC) 2 ] ∞ layer built from 1D double-chain-like motif containing trinuclear [Zn 3 (COO) 8 ] 2 − SBUs, in which the two phenyls of EBTC are almost perpendicularly arranged. Compound 2 is a 3D layer-pillar structure with Zn(II) ions bridged by planar EBTC to generate 2D [Zn(EBTC) 0.5 ] ∞ sheet, and the 2D sheets are further pillared by rigid BPY to form a 3D porous framework with fsc topology. Complex 3 exhibits a 3D 2-fold interpenetrating framework with (4.6 4 .8) 2 (4 2 .6 4 ) topology, in which the flexible BPP links the 1D [Zn 2 (EBTC)] ∞ ladder to form a 2D [Zn 2 (EBTC)(BPP) 2 ] ∞ structure with large 1D channels, which leads the flexible 2D framework to 2-fold interpenetration and forms a 3D porous network. Complexes 1 and 3 exhibit good luminescent properties around the blue-violet region. [ABSTRACT FROM AUTHOR]

Two new metal carboxyphosphonates with 3D framework structures, [Sn 2 (HL)·2H 2 O] ( 1 ) and [Pb 2 Cl(H 2 L)] ( 2 ) (H 5 L = 4-HOOCC 6 H 4 CH 2 N(CH 2 PO 3 H 2 ) 2 ), have been synthesized under hydrothermal conditions. For compound 1 , every two Sn(1)O 3 and Sn(2)O 3 polyhedra are linked by CPO 3 tetrahedra to form a 2D inorganic layer via corner-sharing in the bc -plane. Then the adjacent layers are further assembled into a 3D supramolecular structure through π–π stacking interactions. Compound 2 features a 3D open-framework structure. The Pb(1)O 5 Cl, Pb(2)O 5 polyhedra and CPO 3 tetrahedra are interconnected into a 2D inorganic layer via corner-sharing in the ac -plane. Such layers are further connected through carboxyphosphonate ligands to form a 3D open-framework structure. The luminescent properties of compounds 1 and 2 have also been studied. [ABSTRACT FROM AUTHOR]

Abstract: A new zinc coordination polymer [Zn(L)2]n (1) (HL=4′-(4-carboxy-methoxyphenyl)-4,2′:6′,4″-terpyridine) was constructed under hydrothermal condition. X-ray single diffraction studies reveal that 1 shows a three-fold interpenetrating 3D framework with a 4-connected dia topological net, which contains the same number of left- and right-handed 21 helical chains. Additionally, photoluminescence property of 1 has been investigated. [Copyright &y& Elsevier]

Abstract: One novel metal–organic framework, namely, [Cd2(ndd)2(tib)2·H2O]n (1), [H2ndd=2,2′-(naphthalene-1,5-diylbis(oxy))diacetic acid, tib=1,3,5-tri(1H-imidazol-1-yl)benzene] has been prepared under hydrothermal condition and characterized by elemental analyses, infrared spectroscopy, powder X-ray diffraction and single-crystal X-ray diffraction analyses. Compound 1 presents a 3D 3-fold interpenetrated (3,5)-connected network with the point symbol of (42·65·83)(42·6) topology. Furthermore, the thermal stabilities and luminescent properties of compound 1 were studied. [Copyright &y& Elsevier]

Abstract: Three coordination polymers, i.e. [Co(HL)(HBDC)]n (1), [Co(HL)(BDC)0.5]n (2) and {[Zn2(H2L)(BTC)2](H4L)(H2O)2}n (3) (L=2, 2′-(ethanediyl)bis(1H-benzimidazole), H2BDC=1, 4-benzenedicarboxylic acid, H3BTC=1, 3, 5-benzene tricarboxylic acid), have been synthesized under hydrothermal conditions based on bis(2-benzimidazole) and two multi-dentate carboxylate ligands, with different metal ions such as ZnII and CoII. The structures of these coordination polymers have been determined by X-ray single‐crystal diffraction. The diverse coordination modes of the H2L ligand and the varying geometries of multi-dentate carboxylate ligands play an important role in the construction of coordination polymers. Various assembly patterns have been observed, including one-dimensional (1D) chain (1), two-dimensional (2D) 3-connected network structure with honeycomb topology (2), and three-dimensional (3D) 3,4-connected porous structure with (63)(65,8) topology (3). Thermal analyses of the three polymers have been performed and discussed. Furthermore, strong room temperature photoluminescence of compound 3 was observed. [Copyright &y& Elsevier]

Abstract: A novel CdII-coordination framework [Cd(C4O4)(btb)(H2O)2]n (1) constructed by squaric acid (H2C4O4) and secondary N-donor spacer 1,4-bis(1,2,4-triazol-4-yl)butane (btb) is presented, which displays 2D→3D inclined polycatenate framework consisting of two of sets of equivalent 2D 44-sql layers and (4,6)-connected self-catenated H-bonding topology. In addition, the thermal stability and photo-luminescence property of 1 were also investigated. [Copyright &y& Elsevier]

Abstract: The first transition–metal coordination polymer {[Cd2L2(H2O)2]·2H2O} n (1) based on a new 1,2,4-triazole derivatives H2L (H2L=3-(pyrid-2-yl)-5-(1H-1,2,4-triazol-3-yl)-1,2,4-triazole) is presented, which not only exhibits an example assembled from 1D [Cd1L] chains to 3D (3,4)-connected network linked through [Cd2(trz)]2 dimeric units, but also shows high thermal stability and strong photoluminescence at room temperature. [Copyright &y& Elsevier]

Abstract: Reaction of 4-amino-3-(4-pyridyl)-5-mercapto-1,2,4-triazole (a-Hptt) with PbCl2 hydrothermally has yielded complex [PbCl(ptt)]n (1) at pH 5. And the ligand a-Hptt can be deaminated and transformed into Hptt under hydrothermal condition (pH 5). The structure of 1 has been fully characterized by single crystal X-ray diffraction, elemental analysis, IR, as well as luminescent property. Structural analysis reveals that complex 1 is constructed from 2D two-component layers, which alternately arrange in the ⋯ABAB⋯ pattern, and then further pillared by Hptt ligands into an interesting 3D “pillared-layer” architecture. Complex 1 also shows strong luminescence emission in solid state at room temperature and may be suitable as a candidate for potentially photoactive material. [Copyright &y& Elsevier]

Abstract: A novel 3d–4f heterometallic coordination polymer, namely, {[Sm2(PBDA)2·2H2O][Zn2(PBDA)2(Cl)2]}n (1), (H2PBDA=3 -(pyridin-3-yl-oxy) benzene −1,2-dicarboxylic acid) has been hydrothermally synthesized by using samarium(III) nitrate, H2PBDA acid and zinc chloride as raw materials, and characterized by elemental analysis, FT-IR, TG analysis and single crystal X-ray diffraction. Polymer 1 possesses two-dimensional (2D) network containing the original 1D heterometallic chain composed of [Sm2Zn2(PBDA)2] moieties. Variable temperature magnetic susceptibility studies reveal that 1 displays possible weak antiferromagnetic coupling between the neighboring Sm(III) ions, and the photoluminescent properties of polymer 1 as well as free H2PBDA ligand were also investigated. [Copyright &y& Elsevier]

Abstract: Two new coordination polymers, {[Zn3L2.5(μ 3-OH)(H2O)3]·4H2O} n (1) and [Zn2L1.5(μ 3-OH)(4,4′-bpy)0.5] n (2) (H2L=2,5-bis(4-methylbenzoyl)terephthalic acid, 4,4′-bpy=4,4′-bipyridine), have been hydrothermally synthesized and characterized by elemental analysis, IR spectroscopy, TG, PXRD and single crystal X-ray diffraction. Complex 1 possesses a 2D double-layer configuration with 48·62 network constructed with trinuclear zinc(II) clusters and L2− ligands, which extends into a 3D architecture via O–H···O interactions between coordinated water molecules and lattice water molecules. Complex 2 is a uninodal 8-connected 3D framework with a 424·64 network based on tetranuclear zinc(II) clusters as nodes. Moreover, the luminescent properties of complexes 1 and 2 were also investigated. [Copyright &y& Elsevier]

Abstract: A series of LMOFs, consisting of three groups of isostructural compounds, [Ln(3-H-5-phenoxonicotinato)(ox)(H2O)2]n 1 (Ln=La(1a), Pr(1b), Nd(1c), 5-Hydroxynicotinic acid=C6H5NO3, ox=C2O4 2−), {[Ln(3-H-5-hydroxynicotinato)(ox)1.5(H2O)]⋅H2O}n 2 (Ln=Sm(2a), Gd(2b), Tb(2c), and {[Ln(3-H-5-phenoxonicotinato)(ox)(H2O)]⋅H2O}n 3 (Ln=Dy(3a), Er(3b), have been hydrothermally synthesized and structurally determined by X-ray diffraction analyses. Compounds in group 1 are constructed by mixed μ 3-3-H-5-phenoxonicotinato and oxalate bridging ligands and Ln3+ ions, exhibiting a 3D covalent network with empty 1D microchannels, featuring a 3,5-connected topology symbol of {42⋅65⋅83}⋅{42⋅6}. Compounds in group 2 present a brick-well-liked 2D network generated by both metal ions and oxalate groups at a side-by-side way. Compounds in group 3 are isotopological to those in group 1, accompanying 1D microchannels being occupied by coordinated water molecules. Antiferromagnetic interactions between praseodymium metal centers are observed from the magnetic susceptibility of compound 1b. In addition, luminescence measurements indicate that the terbium complex 2c is a strong green luminescence emitter. [Copyright &y& Elsevier]

Abstract: By using the (2-carboxypiperidyl)-N-methylenephosphonic acid as the phosphonate ligand and 1,4-benzenedicarboxylic acid as the second metal linker, a novel cadmium(II) carboxyphosphonate with a 2D layered structure, namely, [Cd2(HL)(bdc)] (1) (H3L═H2O3PCH2―NC5H9―COOH, H2bdc═HOOCC6H4COOH) has been synthesized under hydrothermal conditions. In compound 1, each Cd(II) atoms are octahedrally coordinated [Cd(1)O6, Cd(2)O6]. These cadmium octahedra form a 1D double chain along the b-axis through edge- and corner-sharing, and such chains are further interlinked by the bdc2− anions into a 2D layer in the bc-plane. The luminescent property of compound 1 has also been studied. [Copyright &y& Elsevier]

Abstract: Two metal–organic frameworks, namely, [Zn(L)(phen)(H2O)]n (1) and [Cd(L)(phen)]n (2), where H2L=2,2′-(naphthalene-1,5-diylbis(oxy))diacetic acid and phen=1,10-phenanthroline, have been synthesized under hydrothermal conditions and characterized by single crystal X-ray diffraction analyses, powder X-ray diffraction and thermogravimetric analysis. Compound 1 can be described as a 3D supramolecular architecture formed via the strong π–π interactions. While, compound 2, obtained by changing the metal ions, exhibits a 3D metal–organic frameworks of PtS topology with the square window (the dimensions is 11.454×25.847Å). The different structures between 1 and 2 indicate that metal ions have significant effects on the final complexes. Moreover, compounds 1 and 2 show good luminescent properties in the solid state at room temperature. [Copyright &y& Elsevier]

Abstract: An unusual three-dimensional (3D) pillared-layer 3d–4f (Cu+–Sm3+) heterometallic coordination polymer, {Sm2Cu7Br6(IN)7(H2O)5·3H2O} n (1) (HIN = isonicotinic acid), has been successfully synthesized by hydrothermal reaction of Sm2O3, CuBr2, HIN, HClO4 and H2O, and characterized by elemental analyses, IR, PXRD, and single-crystal X-ray diffraction. The structure determination reveals that 1 possesses 3D heterometallic framework constructed upon unprecedented [Cu7Br6] n n+ inorganic layers linked by dimeric Sm2(IN)6 pillars. Additionally, the thermogravimetric analysis and luminescent property of 1 were investigated and discussed. [Copyright &y& Elsevier]

Abstract: By using the N-morpholinomethylphosphonic acid as the phosphonate ligand and 1,4-benzenedicarboxylic acid as the second metal linker, a novel cadmium(II) phosphonate with a 3D framework structure, namely, [Cd2(HL)(bdc)(Hbdc)] (1) (H2L=O(CH2CH2)2NCH2PO3H2, H2bdc=HOOCC6H4COOH) has been synthesized under hydrothermal conditions. In compound 1, the {CdO6} and {CdO7} polyhedra are interconnected by phosphonate groups into a 1D chain, each chain is connected by the bdc2− anions into a 2D layer, and the adjacent layers are further linked via the bdc2− anions to form a 3D framework structure with a 1D channel system along the a-axis. Luminescent property of compound 1 has also been studied. [Copyright &y& Elsevier]

Abstract: One 3d–4f heterometallic polymer, namely, {[Eu2Cu(PDC)2(SO4)2(H2O)6]·2H2O}n (H2PDC=pyridine-3,5-dicarboxylic acid), has been successfully synthesized under hydrothermal conditions and structurally characterized. Single-crystal X-ray diffraction analysis reveals that the polymer features an unusual three-dimensional network structure in which infinite lanthanide-carboxylate chains are linked by [Cu(SO4)2]2− metalloligands to form a mixed-metal coordination network. Furthermore, luminescent property of the hybrid material has also been investigated at room temperature. [Copyright &y& Elsevier]

Abstract: Two novel zinc(II) coordination polymers, [Zn2(Hcpip)2(ox)]n·2nH2O (1) and [Zn4(Hcpip)2(cpip)2(ox)]n·5nH2O (2), (H2cpip=2-(2-carboxyphenyl) imidazo [4,5-f]1,10-phenanthroline, H2ox=oxalic acid), have been hydrothermally synthesized and characterized by elemental analysis, IR, single crystal X-ray diffraction. Compound 1 is a 1D chain, in which the dinuclear [Zn2(Hcpip)2]2+ units are linked through (ox)2− anions. Compound 2 is a 2D layer structure, which is constructed from the 1D chains bridged by (ox)2− anions. These two compounds possess strong luminescence and good thermal stabilities. [Copyright &y& Elsevier]

Abstract: Three new lanthanide metal organic frameworks (LnMOFs), [HNMe2][Ln2(m-BDC)3(phen)2] (Ln=Eu 1, Gd 2, Tb 3, m-H2BDC=1,3-benzenedicarboxylic acid, phen=1,10-phenanthroline), have been solvothermally synthesized through self-assembly reactions. Complexes 1–3 are isostructural and possess 3D architectures based on the octahedral [Ln2(COO)6] SBUs with a pcu net topology. Photoluminescence measurements show that 1 and 3 are highly emissive at room temperature with quantum yields of 86.87% (at 330nm) and 85.62% (at 345nm), respectively, and may be good candidates for light-emitting diodes (LEDs) and light applications. The magnetic properties of 2 and 3 have also been investigated through the measurement of their magnetic susceptibilities over the temperature range of 2–300K. [Copyright &y& Elsevier]

Abstract: A novel eight-connected metal–organic framework, ZnII 7(btc-NO2)4(bpp)2(μ 3-OH)2(H2O)2 (H3btc-NO2 =5-nitro-1,2,3-benzenetricarboxylate and bpp=1,3-bi(4-pyridyl)propane, 1), has been hydrothermally synthesized and characterized by elemental analyses, FTIR, and X-ray diffraction. A rare U-shaped [Zn7O4(O2C)12N4] secondary building unit was found in 1, together with double parallel btc-NO2 anions and bpp flexibility ligands as links, resulting in an eight-connected heptanuclear-based uninodal 3D framework with 424.64 topology. Moreover, the thermal stability and luminescent property of 1 have been investigated as well. [Copyright &y& Elsevier]

Abstract: A rare mercury coordination network containing left- and right-handed helical chains [HgL1Br2]n·nDMF (1) [L1 =1,4-bis(3-pyridylaminomethyl)benzene] and dinuclear complex Hg2L2Br4(DMF)2] (2) [L2 =1,4-bis(2-pyridylaminomethyl)benzene] have been synthesized. The thermal gravimetric and the solid-state luminescent properties of complexes were also investigated. [ABSTRACT FROM AUTHOR]

Abstract: Two 2-D polymers, [Ln(bidc)(Ac)·H2O]n (Ln=Tb(1), Dy(2) H2bidc=benzimidazole-5,6-dicarboxylic acid, HAc=acetic acid), have been successfully synthesized under hydrothermal conditions at 150°C and characterized by elemental analysis, infrared spectra and single-crystal X-ray diffraction. Single crystal X-ray diffraction analyses reveal that the two compounds are isomorphous and exhibit one new (4,4)-connected 2-nodal (44·62)(44·62) layer-like net, stabilized by the interchain hydrogen bonding N–H⋯O, O–H⋯O and π⋯π stacking interactions between two benzimidazole rings. 2-D layers are further connected by the interlayer O–H⋯O hydrogen-bonding interactions to form a 3-D supermoleculaer network. Moreover, the luminescent property of compound 1 and thermogravimetric analyses of the two complexes 1–2 are discussed in detail. [ABSTRACT FROM AUTHOR]

Abstract: A lead(II) complex [Pb(Hfysh)2] (1) (H2fysh=furan-2-ylmethylene salicyloyl hydrazone) has been synthesized and characterized. The lead atom is in a holodirected eight-coordinated polyhedron. There are secondary Pb–O interactions that give rise to a novel 3D-diamond-like coordination network. The luminescent property of 1 in the solid state was investigated. [Copyright &y& Elsevier]

Abstract: Three 4d–4f heterometallic polymers, Ln2Ag2(Hpydc)2(pydc)2(ox)·4H2O (Ln=Nd (1), Eu (2) and Er (3); H2Pydc=pyridine-3,5-dicarboxylic acid, H2ox=oxalic acid), have been successfully synthesized under hydrothermal condition and structurally characterized. Single-crystal X-ray diffraction analyses reveal that three compounds are isomorphous and exhibit 3D pillar-layered coordination frameworks constructed from two-dimensional lanthanide-carboxylate layers and [Ag(pydc)]− pillars. Furthermore, the luminescent property of compound 2 was studied. [Copyright &y& Elsevier]

Abstract: A lead(II) orotate complex [Pb(HOr)(H2O)]n (1), (H3Or=orotic acid) was synthesized under hydrothermal condition and characterized by X-ray diffraction, IR, solid-state photoluminescence and thermogravimetric analysis. Lead atom in 1 is in a holodirected eight-coordinated polyhedron and the orotate ligand exhibits a new and unique hexametallic coordination mode. The lead complex shows a 6,6-connected (48, 66, 8)(413, 62) topology. The complex exhibits photoluminescence at 546nm (λ ex =350nm). [Copyright &y& Elsevier]

Abstract: Two Zn(II)-2,2′-biimidazole derivative supramolecular isomers 1 and 2 formulated as [Zn(L)]·2H2O (H2L = 4,4′-(1H,1′H-2,2′-biimidazole-1,1′-diylbis(methylene))dibenzoic acid) have been synthesized, and structurally characterized by elemental analysis, IR spectroscopy, single-crystal X-ray crystallography. Complex 1 exhibits a 2D four-connected network with (43.63) topology when the zinc center and the L2− ligand act as four-connected nodes (or a distorted (4,4) grid if the [Zn2(imidazole)4] units are considered as four-connected nodes). Complex 2 shows a novel four-connected twofold interpenetrated net with (42.62.82) topology when the zinc center and the L2− ligand act as four-connected nodes (or a twofold interpenetrated α-Po topology when [Zn2(imidazole)4] units are identified as six-connected nodes). Moreover, complexes 1 and 2 both exhibit strong luminescent properties at room temperature. [Copyright &y& Elsevier]

Abstract: A novel 3D coordination polymer {[Dy2(bpdc)3(H2O)3]·H2O} n (bpdc=2,2′-bipyridine-4,4′- dicarboxylate) based on inorganic rod-shaped infinite secondary building unit is presented, which possesses unusual mixed-connected network topology and shows high thermal stability and strong photoluminescence at room temperature. [Copyright &y& Elsevier]

Abstract: A novel cobalt(II) coordination polymer, [Co(L)2] n (1) (HL=4-(imidazol-1-yl)-benzoic acid), has been hydrothermally synthesized and structurally characterized by X-ray diffraction, IR spectrum and elemental analyses. Structure determination of complex 1 reveals that the two-dimensional (2D) network framework consists of regular square grid with dimensions of ca. 11.42×11.42Å. Complex 1 exhibits a strong blue luminescence centering at 409nm in the solid. Variable temperature magnetic susceptibility study shows there is a weak antiferromagnetic interaction in complex 1. Thermal property is also investigated. [Copyright &y& Elsevier]

Abstract: In this article, a Cu(I)-halide complex [Cu(II)Cu(I)3(1,10′-phen)Cl5] n (1) has been synthesized under hydrothermal reaction condition. Complex 1 is a three-dimensional supramolecular network composed by one-dimensional chains. To our interest, in the chain, there exists Cu6Cl6 building unit, which is seldom found in Cu(I)-halide complex. Furthermore, the Cu6Cl6 building unit is extended by Cu(II)(1,10′-phen)Cl2 unit. To our knowledge, this is the first mixed-valence Cu-halide complex composed from Cu6Cl6 building unit. Complex 1 exhibits strong luminescent property at room temperature. [Copyright &y& Elsevier]

Abstract: The new complex {[Cu(dde)(bpe)]·H2O} n (1) (dde=4,4′-dicarboxydiphenyl ether, bpe=1,2-bis(4-pyridyl)ethene) has been synthesized and characterized. It exhibits a novel (2D→3D) three-fold parallel interpenetrating architecture that is obtained for the first time from the self-assembly of grid-containing 2D (4,4) layer motifs. The fluorescent property of 1 is discussed. [Copyright &y& Elsevier]

Abstract: Two new lead-carboxylate complexes based on nicotinic acid N-oxide ligand, [Pb(NNO)(FA)0.5] (1) (HNNO=nicotinic acid N-oxide, FA=fumaric acid) and [Pb2(NNO)(BTC)] (2) (H3BTC=1,3,5-benzenetricarboxylic acid) were hydrothermally synthesized and characterized by the elemental analyses, IR spectra and single crystal X-ray diffraction. Significant phosphorescent properties of two compounds were observed at room temperature. [Copyright &y& Elsevier]

Abstract: In this article, a Cu(I)-halide complex [Cu(II)3Cu(I)4(NA)6Br4]n (complex 1) (NA=pyridine-3-carboxylate) has been synthesized under hydrothermal reaction conditions. Complex 1 is a two-dimensional layer structure composed by trinuclear Cu(II) unit and tetranuclear Cu(I) unit connected by NA ligands. Complex 1 exhibits strong luminescent property at room temperature. [Copyright &y& Elsevier]

A new co-crystallized complex [Me 2 NH 2 ] 6 [V IV 12 V V 6 O 42 ][VON(CH 2 CH 2 O) 3 ]·2H 2 O ( 1 ) based on mixed valence polyoxovanadate [V IV 12 V V 6 O 42 ] 6 − and a new mononuclear vanadium complex [VON(CH 2 CH 2 O) 3 ] ( 2 ) were synthesized by controlling conditions of solvothermal synthesis and characterized by single crystal XRD, IR, XPS and EA, respectively. The compound 1 presents interesting antiferromagnetic interaction in solid state and luminescent property in aqueous solution. [ABSTRACT FROM AUTHOR]

Abstract: A new 3D metal–organic framework [Cd2(2,6-pydc)2(bime)(H2O)]n (1) containing 1D Cd−oxygen chains was synthesized by the self-assembly of pyridine-2,6-dicarboxylate (2,6-pydc), 1,6-Bis (imidazol) hexane (bime) and Cd(II) salt, which exhibits a 2-fold interpenetrated 3D entanglement architecture with attractive helical structure. In addition, photoluminescent and thermal properties of complex 1 have been investigated as well. [Copyright &y& Elsevier]

Abstract: Three isomorphous three-dimensional lanthanide metal–organic frameworks, [Ln2(NIPH)3(DMF)4]·(DMF)2 (Ln=Eu, Pr and Sm, and H2NIPH=5-nitroisophthalic acid) have been synthesized under solvothermal condition and characterized by single-crystal X-ray structure diffraction, IR spectroscopy, thermogravimetric analysis (TGA), luminescent property and elemental analyses. In their structures, two lanthanide(III) ions are bridged by four carboxylate groups and chelated by another two carboxylate groups to generate a [Ln2(COO)6] dinuclear group, which serves as octahedral secondary building unit (SBU) to produce a pcu net. [Copyright &y& Elsevier]

Abstract: A novel organomercury complex, [Hg2(μ-CH3COO)(CH3COO)(L)] n (L = 1,3-bis(pyridine-2-ylmethoxy)benzene) 1, has been synthesized. Complex 1 has a one-dimensional chain structure formed by acetate anions bridging Hg(II) atoms in crystallographical c-axis. The orthomercuration of the ligand takes place at C-4 and C-6 of benzene ring rather than C-2 position. It shows intense fluorescent emission by solid-state luminescent analysis. [Copyright &y& Elsevier]

Abstract: A novel lanthanide metal–organic framework, [Eu2(BDC)3(DMF)2]·(DMF)1.7(BDC=1,3-benzenediacarboxylate) 1 has been synthesized under solvothermal condition and characterized by single-crystal X-ray structure determination, luminescent property, nitrogen gas adsorption, powder X-ray diffraction, IR, and TGA. [Copyright &y& Elsevier]

Abstract: A novel 2D coordination polymer, formulated as [Cd2(Hpimdc)2(bpp)(H2O)] n (bpp=1,3-bis(4-pyridyl)propane, H3pimdc=2-propyl-4,5-imidazoledicarboxylate), has been hydro-thermally synthesized and structurally characterized, which shows unusual multifarious helical structures and (3,4)-connected network with (4.82)2(42.83.10) topology. The photoluminescent property and thermal stability of 1 were also discussed. [Copyright &y& Elsevier]

Abstract: Circular and rhombic tubular building blocks interweave mutually into a novel 2-fold interpenetrated 3D PtS framework [Zn(ADB)(H2O)] n (1) (H2ADB=azobenzen-4,4′-dicarboxylic acid), with hydrogen-bonded–O–metal–O–chain. In additional, solid-state properties such as photoluminescence and thermal stability of the complex 1 have also been studied. [Copyright &y& Elsevier]

Abstract: The solvothermal reaction of AgCN with 2-tptz (2-tptz=2,4,6-tri(2-pyridyl)-1,3,5-triazin) afforded a 3D coordination polymer [(AgCN)3(2-tptz)] n (1). It was characterized by infrared spectroscopy, elemental analysis and X-ray single-crystal analysis. The structure of this polymer features a 2D wavelike [AgCN] n substructure constructed from 18-membered of Ag6(CN)6 rings and 22-membered of Ag8(CN)6C2 rings. When silver⋯sliver interactions are taken into account, the structure of 1 exhibits a (3·8·9)(4·8·9)(3·4·8·93)(3·8·92 ·102) topological network which has not been reported for the (3,4)-connected nets. The photoluminescent property of the present coordination polymer was also investigated. [Copyright &y& Elsevier]

Abstract: A novel cadmium coordination polymer [Cd2L2(bpp)2] n (1) (H2L=1,3-adamantanediacetic acid and bpp=1,3-di-4-pyridylpropane) was prepared under hydrothermal condition. The three-dimensional (3D) structure is built from the interlinking lamellars. The CdII ions are six- and seven-coordinated and linked by L2− ligands, which results in the right- and left-handed helical chains. The layers are stacked with each other via bpp to generate a 3D architecture. At room temperature, the complex 1 shows the strong fluorescent emission bands in the solid state. [Copyright &y& Elsevier]

Abstract: Benzimidazole-5-carboxylate (HL1) and 5-methylbenzimidazole-6-carboxylic acid (HL2) have been employed to assemble with Cd(II) ions under hydrothermal conditions, leading to the generation of 1D (1) and 2D (2) metal-organic frameworks. The two coordinated water molecules of cadmium in 1 restrain the carboxylic moiety from adopting a bidentate chelating coordination mode, which seems to be an important factor in the dramatic structural change from 1D to 2D. Both complexes display blue emission in the solid state and the luminescent properties relate to their structures. [Copyright &y& Elsevier]