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Abstract: Diffusion reactions of CuI with N,N,N′,N′-tetra(diphenylphosphanylmethyl)ethylene diamine) (dppeda) and 1,4-N,N,N′,N′-tetra(diphenylphosphanylmethyl)benzene diamine (dpppda) in MeCN/toluene in a zigzag glass tube or solvothermal reactions of CuI and dppeda or dpppda in MeCN produced two [Cu x I x ]-based coordination polymers, [Cu2I2(dppeda)]·2MeCN (1·2MeCN) and [Cu4I4(dpppda)]·MeCN (2·MeCN), respectively. Both compounds were characterized by elemental analysis, IR spectroscopy, 1H and 31P{1H} NMR, ESI-MS and thermogravimetric analysis, and their structures were determined by single crystal X-ray diffraction. In 1, [Cu2I2] cores are interconnected by dppeda ligands in a μ-η 2:η 2 end-to-end mode to form a 1D chain, while in 2 stair-like [Cu4I4] cores are linked by dpppda ligands in a unique Z-shaped μ-η 2:η 2 side-by-side mode to produce the other kind of 1D chain. [Copyright &y& Elsevier]

Abstract: A novel cadmium(II)/Htda coordination polymer [K2Cd(Htda)2] n (1) (Htda=1,2,3-triazole-4,5-dicarboxylate) was prepared through solvothermal methods and structurally characterized. An X-ray analysis reveals that 1 consists of an unusual 3D (4,4,6)-connected network with a (4264)Cd(42638)K(4361082)Htda topology constructed from anionic chains and K+ ions via a series of K–O bonding interactions. The luminescent properties of 1 along with the H3tda ligand in the solid state were investigated. [Copyright &y& Elsevier]

Abstract: A novel lead(II)/4-pya coordination polymer [Pb(4-pya)2] n (1) (4-pya= trans-4-pyridylacrylate) was synthesized and structurally characterized. Single-crystal X-ray diffraction revealed that 1 consists of a 3D network constructed from the 4-pya bridging ligand and {Pb2O2} subunits, in which each eight-coordinated Pb(II) ion adopts a dodecahedral coordination geometry. The thermal and luminescent properties of 1 in the solid state were investigated. [Copyright &y& Elsevier]

Abstract: A novel lead(II) coordination polymer [Pb(4-cca)] n (1) was prepared by the hydrothermal reaction of Pb(NO3)2 with 4-carboxycinnamic acid (4-H2cca) and structurally characterized. Single-crystal X-ray diffraction revealed that 1 has a 3D supramolecular architecture constructed by 2D [Pb(COO)2] n layers pillared by –Ph–CH; spacers. The thermal and luminescent properties of 1 in the solid state were also investigated. [Copyright &y& Elsevier]

Abstract: Reactions of 25,26,27,28-tetrahydroxy-calix[4]arene (1) with 4 equiv. of m-carboxybenzenediazonium chloride in the presence of NaOAc∙3H2O in DMF produced a new azo calix[4]arene [H4L] (2) (H4L=5,11,17,23-tetrakis[(m-carboxyphenyl)azo]-25,26,27,28-tetrahydroxycalix[4]arene) in 96% yield. Hydrothermal reactions of Cd(NO3)2·4H2O with H4L at 90°C under pH=5.0–6.0 gave rise to a coordination polymer {[H3O]2[Cd7L4(DMF)4(EtOH)2(H2O)2]·5DMF·11.5EtOH·H2O}n (3). Compound 3 was characterized by elemental analysis, IR, powder X-ray diffraction, and single-crystal X-ray diffraction. Compound 3 consists of a 3D framework with an unprecedented (3346526371)(364135861) topology. The thermal properties of 2 and 3 were also investigated. [Copyright &y& Elsevier]

Abstract: Solvothermal reactions of CdSO4·8/3H2O with 1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene (titmb) and HCl in H2O, MeOH or EtOH afforded three coordination complexes [Cd5Cl2(μ-Cl)4(μ3-Cl)2(η,η,η-μ3-SO4)2(H2O)2(Htitmb)2] n (1), [Cd4Cl2(μ-Cl)2(η,η,η-μ3-SO4)2(MeOH)2(titmb)2] n (2) and [Cd4Cl2(μ-Cl)2(η,η,η-μ3-SO4)2] (3), respectively. All the compounds were characterized by elemental analysis, IR and single crystal X-ray diffraction. Compound 1 has a 1D chain in which each centrosymmetric double butterfly-shaped [Cd5Cl2(μ-Cl)4(μ3-Cl)2(H2O)2] unit interlinks with its equivalent ones via two couples of η,η,η-μ3-SO4 anions and two pairs of the Htitmb ligands. Compound 2 consists of one centrosymmetric [Cd5Cl2(μ-Cl)2(η,η,η-μ3-SO4)2(MeOH)4(titmb)2] unit that interconnects with equivalent ones via sharing Cd3 and its symmetry-related ones, forming a 1D zigzag chain. Compound 3 consists of a [Cd4Cl2(μ-Cl)2(η,η,η-μ3-SO4)2] unit linked by a pair of titmb ligands. The results may provide some insight into solvent effects on the formation of different coordination compounds from the same components. [Copyright &y& Elsevier]

Abstract: Three [Cu n X n ]-based (X=Br, I) coordination polymers, {[Cu2(μ-I)2(bimb)2]·iodobenzene} n (1), {[Cu4(μ3-I)4(bimb)2][Cu2(μ-I)2(bimb)]} n (2) and {[Cu2Br(bimb)2]Br} n (3) were prepared from solvothermal reactions of CuX (X=I, Br) with 1,4-bis(imidazol-1-yl)butane (bimb) at different temperatures. These compounds were characterized by elemental analysis, IR, and single crystal X-ray diffraction. Compound 1 contains a rhombic [Cu2(μ-I)2] dimer that acts as a planar four-connected node to link four equivalent ones via bimb bridges to form a 2D (4,4) network. Each layer is further stacked by π–π interactions to form a 3D structure with 1D rhombic channels occupied by the guest iodobenzene molecules. Compound 2 consists of [Cu2(μ-I)2] dimers and [Cu4(μ3-I)4] tetramers which are interconnected by bimb bridges to generate another 2D network. Compound 3 contains [Cu2Br(bimb)2]+ cations that are linked by bimb ligands to form a 1D cationic chain. We also investigated the solid state photoluminescent properties of 1–3 at ambient temperature. The results provide an interesting insight into how reaction temperatures exert a great effect on the assembly of [CunXn]-based coordination polymers. [Copyright &y& Elsevier]

Hydrothermal reactions of CdSO4 with tetrakis(4-pyridyl)cyclobutane (tpcb) and 1,3-benzenedicarboxylic acid (1,3-H2BDC) or 5-nitro-1,3-benzenedicarboxylic acid (5-NO2-1,3-H2BDC) resulted in the formation of two coordination polymers [Cd(tpcb)0.5(1,3-BDC)]n (1) and {[Cd2(tpcb)(5-NO2-1,3-BDC)2(OH2)2]·4H2O}n (2), respectively. Compounds 1 and 2 were characterized by elemental analysis, IR, powder X-ray diffraction, and single-crystal X-ray diffraction. 1 and 2 exhibit two different types of two-fold interpenetrating 3D architectures with (66)2(64 ·82) and (52 ·8)(54 ·6∙8)(4·53 ·62 ·7·82 ·10) Schläfli symbols, respectively. Their thermal and photoluminescent properties were also investigated. [ABSTRACT FROM AUTHOR]

Reactions of PbI2 with KI, I2 and 1,2-bis(diphenylphosphino)ethane (dppe) (molar ratio=1:5:3:4) in MeCN/EtOH under solvothermal conditions afforded a one-dimensional (1D) coordination polymer [(EP)(Pb2I6)]n (EP2+ =ethane-1,2-diylbis(ethyldiphenylphosphonium)) (1) and a three-dimensional (3D) coordination polymer [{(Pb3(μ-I)6)(dppeo)3}·EtOH]n (2) (by-product). Treatment of the same components with H2O2 under similar conditions produced another 3D coordination polymer [{Pb2(μ-I)2(μ3-I)2}(dppeo)]n (dppeo=ethane-1,2-diylbis(diphenylphosphine oxide)) (3). Compound 2 could also be prepared in a medium yield from solvothermal reactions of PbI2 with KI, I2 and dppeo (molar ratio=1:5:3:4). Compounds 1–3 were characterized by elemental analysis, IR and single crystal X-ray diffraction. Compound 1 contains one 1D anionic [PbI3]n n− chain with EP2+ dications being embedded between chains. The EP2+ dication was in situ generated via the cleavage of C O bond of EtOH followed by alkylation of dppe. Compound 2 consists of trinuclear [Pb3(μ-I)6] fragments that are interlinked via dppeo bridges to form a 3D 6-connected net (a 41263 Schläfli symbol). Compound 3 has a 3D net (with a 66 Schläfli symbol) constructed from 1D [Pb2(μ-I)2(μ3-I)2]n chains linked by dppeo ligands. The dppeo ligand in 3 was formed in situ from the oxidation of dppe by H2O2. The optoelectronic properties of 1–3 were also investigated. [ABSTRACT FROM AUTHOR]

Abstract: Solvothermal reactions of Cu2(OH)2CO3 with 1,2-bis(4-pyridyl)ethane (bpe) and iodobenzene or 4-iodotoluene in acetonitrile and aqueous ammonia afforded two arylamine-solvated [Cu2I2]-based coordination polymers {[Cu2I2(bpe)2]∙Am} n (1: Am=aniline; 2: Am= p-toluidine). Compounds 1 and 2 were characterized by elemental analysis, IR spectra, and powder X-ray diffraction (PXRD). Compounds 1 and 2 have a two-dimensional (4,4) topological network in which every rhombic [Cu2I2] dimer acts as a planar four-connected node to link other four equivalent ones by four bpe bridges. Each layer is further stacked via π–π interactions to form a 3D structure with 1D rhombic channels occupied by the guest aniline or p-toluidine molecules. These guest molecules were in situ generated through Ullmann coupling reactions of iodobenzene or 4-iodotoluene with ammonia. The thermal and photoluminescent properties of 1 and 2 were also investigated. [Copyright &y& Elsevier]

Abstract: Treatment of [Et4N]4[WS4Cu4I6] (1) with two equivalents of bis(3,5-dimethylpyrazolyl)methane (dmpzm) and two equivalents of sodium dicyanamide (dca) in DMF/MeOH afforded a polymeric cluster of [WS4Cu4(dmpzm)2(dca)2]∞ (2). Compound 2 was fully characterized by elemental analysis, IR, UV–Vis, 1H NMR, and TGA measurements. An X-ray analysis revealed that the [WS4Cu4] core of 2 works as a very distorted tetrahedral 4-connecting node that expands to form a rare 3D (6581) topology. Photoluminescent studies on 1 and 2 in the solid state at ambient temperature revealed that 2 displayed significant enhancement of luminescent properties relative to its discrete parent cluster 1. [Copyright &y& Elsevier]

Abstract: Two 1D coordination polymeric isomers with the same chemical formula [Cu(2,2′-bipy)(Htda)] n (2,2′-bipy=2,2′-bipyridine, Htda=1,2,3-triazole-4,5-dicarboxylate) were solvothermally prepared and structurally characterized. X-ray analysis revealed that one isomer has a 1D staircase chain structure while the other possesses a 1D spiral chain structure. The electrochemical behaviors of both isomers in solution were also investigated by cyclic voltammetry. [Copyright &y& Elsevier]