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Abstract: Self-assembly of cadmium salt and long V-shaped 4,4′-sulfonyldibenzoic acid (H2SDBA) ligand affords a three-dimensional (3D) metal-organic framework [Cd(SDBA)(H2O)] (1) (SDBA = 4,4′-sulfonyldibenzoate). Its structure was determined by single-crystal X-ray diffraction analysis and further characterized by elemental analyses, IR spectrum, X-ray powder diffraction and TG analysis. Compound 1 is a (3,6)-connected rutile network of (4·62)2(42·610·83) topology and exhibits an unusual twofold interpenetrating rutile framework. To the best of our knowledge, the 3D coordination polymer has not been reported in {M/SDBA} (M = transition metal) system prior to this work. Furthermore, the luminescent property of 1 was studied. [Copyright &y& Elsevier]

An unprecedented binodal (5,12)-connected 3D self-penetrating metal–organic framework was first assembled from dinuclear barium clusters as 12-connected nodes and flexible ligands 4,4′-sulfonyldibenzoate as 5-connected nodes, and it represents the highest connected self-penetrating topology presently known for metal–organic frameworks. [ABSTRACT FROM AUTHOR]

Abstract: Self-assembly of a long V-shaped 4,4′-oxydiphthalate (odpa) ligand and copper salt in the presence of a linear bidentate ligand affords a unique self-penetrating metal–organic open framework [Cu2(odpa)(bpy)2] (1) (bpy=4,4′-bipyridine), exhibiting an unprecedented binodal four-connected (64.82)2(62.84) topology. Its structure was determined by single-crystal X-ray diffraction analysis and further characterized by elemental analyses, IR spectrum, X-ray powder diffraction, and TG analysis. Compound 1 is a novel three-dimensional (3D) guest-free porous framework containing molecular braids and septuple helices, which are particularly rare in metal–organic coordination polymers. [Copyright &y& Elsevier]

Abstract: Two novel heteropolytungstates, [Cu3Cl(4,4′-bpy)3]2[α-SiW12O40]·4H2O 1 and {Cu3(4,4′-bpy)2(2,2′-bpy)3}{Cu(2,2′-bpy)2}{α-SiW12O40}·0.5(H2O)·0.5(2,2′-bpy) 2 (4,4′-bpy=4,4′-bipyridine, 2,2′-bpy=2,2′-bipyridine), have been prepared under mild hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction. Compound 1 has a unique 2D network, which is composed of cationic trinuclear Cu(I) coordination polymer chains and discrete [α-SiW12O40]4− polyoxoanions as linkers. Notably, it is rarely that the Cu(I) coordination polymer chains are not isolated but connected together by chlorine atoms. Compound 2 exhibits an unusual 3-D network with sandglasslike 1-D channels, within which are located large spherical polyoxometalate anions [α-SiW12O40]4−. The crystal data for two compounds are the following: 1, triclinic, space group , a =10.904(2)Å, b =15.087(3)Å, c =15.303(3)Å, α =116.23(3)°, β =100.08(3)°, γ =94.40(3)°, V =2189.29(80)Å3, Z =1; 2, monoclinic, C 2/c, a =15.444(3)Å, b =24.962(5)Å, c =25.806(5)Å, β =99.75(3)°, V =9805(3)Å3, Z =4. [Copyright &y& Elsevier]

A novel organic–inorganic hybrid copper vanadate [{Cu(phen)(H 2 O)} 2 V 4 O 12 ] (1) (phen  =  1,10-phenanthroline) was synthesized by the hydrothermal reaction of V 2 O 5 , CuCl 2   ·  2H 2 O, phen and water. Complex 1 was characterized by elemental analyses, XPS spectrum, TG analysis, IR spectrum and single-crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system, space group P , a   =  7.7715(16)  Å, b   =  9.3157(19)  Å, c   =  10.887(2)  Å, α   =  89.35(3)°, β  =  69.63(3)°, γ  =  76.41(3)°, V   =  716.1(3)  Å 3 , Z   =  2, λ(Mo-Kα)  =  0.71073  Å, and R (F)  =  0.0648. The title compound contains a novel double-chain ribbon constructed from tetravanadate clusters linked through copper–organic complex fragments. To the best of our knowledge, compound 1 represents the first example of one-dimensional vanadium oxide complexes constructed from tetranuclear clusters linked via metal–organic complex moieties. [ABSTRACT FROM AUTHOR]

A novel three-dimensional, open-framework selenite [H 2 N(CH 2 ) 2 NH 2 ] 0.5 ·CoSeO 3 (1) has been hydrothermally synthesized and characterized by elemental analyses, IR spectrum, XPS spectrum, TG analysis and single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic system, space group P 2 1 /n, with a   =  6.6018(14)  Å, b   =  9.2559(19)  Å, c   =  7.9097(16)  Å, β  =  113.56(3)°, V   =  443.02(16)  Å 3 , and Z   =  4. Compound 1 exhibits an interesting three-dimensional open-framework structure constructed from unique {CoSeO 3 } n layers aggregated from double helical chains pillared by en ligands. Furthermore, the open framework of 1 possesses three types of one-dimensional channels, in which the triangular channel is particularly rare in covalently bonded microporous materials. [ABSTRACT FROM AUTHOR]

Abstract: Two new chain-like polymers, (C6H5NO2)2Na2[(C6H5NO2)2NaCrMo6H6O24] 1 and (C6H5NO2)2[(H2O)6DyCrMo6H6O24]·4H2O 2, have been synthesized and characterized by elemental analyses, IR, TG, and single crystal X-ray diffraction. Compound 1 is built up of [CrMo6H6O24]3− cluster as the structural motif covalently linked by sodium-pyridine-3-carboxylic acid fragments to yield unprecedented one-dimensional chains, which are further in close contact forming a three-dimensional supramolecular framework via extensive hydrogen-bonding interactions among polyoxoanions, coordinated pyridine-3-carboxylic acid ligands and dissociated pyridine-3-carboxylic acid molecules. Compound 2 exhibits one-dimensional chain structure constructed from [CrMo6H6O24]3− building blocks and dysprosium cations, and adjacent chains are further pillared by free pyridine-4-carboxylic acid molecules to form an unusual two-dimensional supramolecular layer via hydrogen-bonding interactions. [Copyright &y& Elsevier]

Abstract: Two unusual compounds, (C6H5NO2)2[La(H2O)7][CrMo6H6O24]·10.5H2O 1 and (C2H5NO2)2[Nd(H2O)5][CrMo6H6O24]·10H2O 2, have been synthesized and characterized by elemental analyses, IR, TG, and single crystal X-ray diffraction. Compound 1 is made up of supramolecular sheets of [Cr(OH)6Mo6O18]3− polyoxoanion-supported lanthanum complexes pillared by individual [Cr(OH)6Mo6O18]3− clusters via weak intermolecular interactions forming a three-dimensional microporous framework with two types of channels, and the ‘guest’ water molecules reside in the channels. Compound 2 also exhibits a new three-dimensional supramolecular network with one-dimensional sandglass-like channels based on the extensive hydrogen-bonding interactions between the [Cr(OH)6Mo6O18]3− polyoxoanions and neodymium–glycine coordination complexes. [Copyright &y& Elsevier]

Abstract: The electrochemical multilayer films of crown-shaped polyoxomolybdate Na21{[Na5(H2O)14]∩[MoV20MoVI26O134(OH)10(μ-CH3COO)4]}⋅CH3COONa⋅90H2O (Mo46) and polyelectrolytes by layer-by-layer assembly were investigated. The stable multilayer films were assembled by alternate adsorption of negatively charged POM and positively charged polyelectrolytes is from their aqueous dispersions. UV–vis spectroscopy and cyclic voltammetry were used to monitor the regular growth of the multilayer films. The multilayer films-modified ITO electrode was used for the detection of electrocatalytic activity toward the reduction of nitrite, bromate, and hydrogen peroxide. The proposed novel immobilized method exhibited good stability, reproducibility and high sensitivity for the determination of electrocatalytic, which is important for practical application. [Copyright &y& Elsevier]

Abstract: A novel three-dimensional metal selenite [Fe2(H2O)4(SeO3)2] (1) has been hydrothermally synthesized and characterized by the elemental analyses, IR spectrum, TG analysis and the single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic system, space group P21/n, with a=6.5283(13) Å, b=8.8754(18) Å, c=7.6798(15) Å, (=98.82(3)β, V=439.71(15) Å3, and Z=2. Compounds 1 exhibits interesting three-dimensional structure constructed from {FeO6} octahedra and {SeO3} pyramids linked via the corner- and/or edge-sharing mode. The most interesting structural feature of compound 1 is that the existence of multidirectional intersecting double helical chains in one compound. [Copyright &y& Elsevier]

Abstract: Two novel inorganic–organic hybrid octamolybdate complexes [H2enMe]2[Mo8O26]·2H2O 1 (enMe=1,2-diaminopropane) and [Ni(2,2′-bpy)3]2[δ-Mo8O26] 2 (2,2′-bpy=2,2′-bipyridine) have been hydrothermally synthesized and characterized by the elemental analyses, TG analyses, IR spectra, XPS spectra and the single-crystal X-ray diffraction. Crystal data for 1: Monoclinic, space group P21/n, a=7.9059(16)Å, b=17.415(4)Å, c=11.509(2)Å, β=109.93(3)°, V=1489.7(5)Å3, Z=2, and R1[I>2σ(I)]=0.0447. Crystal data for 2: Monoclinic, space group C2/c, a=19.987(4)Å, b=14.117(3)Å, c=25.435(5)Å, β=100.59(3)°, V=7054(2)Å3, Z=4, and R1[I>2σ(I)]=0.0280. Compound 1 contains left-handed and right-handed helical chains, which are built up from only molybdenum oxide building blocks and further interconnected to form the double helical chains. The [Ni(2,2′-bpy)3]2+ coordination complexes in compound 2 are packed together via the aromatic π–π stacking interactions and exhibit an interesting 3D honeycomb ‘host’ network with 1D channels, in which the octamolybdate anions ‘guests’ reside. [Copyright &y& Elsevier]

Abstract: Two nickel coordination polymers [Ni(H2O)(C4H4O5)]·H2O 1 and [Ni(H2O)(mal)(phen)] 2, have been hydrothermally synthesized and structurally characterized by single crystal X-ray diffraction. Crystal data for 1: C4H8O7Ni, monoclinic Cc, , , , , . Crystal data for 2: C16H14N2O6Ni, orthorhombic Pna21, , , , . Compound 1 is constructed from [Ni(H2O)(C4H4O5)] sheets pillared through β-carboxylate groups into a 3D framework, which exhibits a diamond-like network. Compound 2 exhibits a 3D supramolecular network. To our knowledge, compound 1 represents the first diamond-like topology in the system of metal–malate. Other characterizations by elemental analysis, IR and TG are also described. The magnetic behavior of compound 1 has been studied. [Copyright &y& Elsevier]

Abstract: Two novel layered chiral rare-earth selenites [Ln(H2O)(HSeO3)(SeO3)] H2O (Ln=Dy, 1, and Gd, 2) have been hydrothermally synthesized and characterized by the elemental analyses, IR spectra, XPS spectra, TG analyses and the single crystal X-ray diffraction. Compound 1 crystallizes in the orthorhombic system, space group P212121, with a=6.5767(13)Å, b=6.9320(14)Å, c=16.333(3)Å, and Z=4. Compound 2 crystallizes in the orthorhombic system, space group P212121, with a=6.6216(13)Å, b=7.0086(14)Å, c=16.424(3)Å, and Z=4. Compounds 1 and 2 are isostructural, and both exhibit interesting chiral layer constructed from {Ln(H2O)(HSeO3)}n left-handed helical chains linked by [SeO3]2- anions. Furthermore, the chiral layers are connected by strong hydrogen bonding interactions to form the three-dimensional structure with chiral channels along the [100] directions. [Copyright &y& Elsevier]

A novel two-dimensional inorganic–organic hybrid vanadate complex [Co(2,2′-bpy)2V3O8.5] 1 (2,2′-bpy, 2,2′-bipyridine) has been hydrothermally synthesized and characterized by the elemental analyses, XPS spectra, TG analysis, IR spectrum and the single-crystal X-ray diffraction. Crystal data for 1: monoclinic, space group P21/c, a=15.612(3)Å, b=14.830(3)Å, c=10.548(2)Å, β=91.90(3)°, V=2440.8(8)Å3, Z=4, and R1[I>2σ(I)]=0.0367. The title compound consists of an unusual two-dimensional vanadate network grafted with [Co(2,2′-bpy)2]2+ complexes. Moreover, compound 1 contains left-handed and right-handed helical chains, which are built up from only vanadium-oxide building blocks and further interconnected to form the double helical chains. [Copyright &y& Elsevier]

A novel three-dimensional (3D) transition metal selenite Fe3(H2O)(SeO3)3 (1) has been hydrothermally synthesized and characterized by the elemental analyses, IR spectrum, TG analysis and the single-crystal X-ray diffraction. Compound 1 crystallizes in the triclinic system, space group P&1macr;, with a=8.0916(16) Å, b=8.2089(16) Å, c=8.5679(17) Å, α=69.21(3)°, β=62.74(3)°, γ=67.16(3)°, Z=2, and R1[I>2σ(I)]=0.0379. Compound 1 exhibits an interesting 3D framework formed by {FeO6} octahedra and {SeO3} trigonal pyramids via the corner- and/or edge-sharing mode. Furthermore, compound 1 consists of left-handed and right-handed helical chains, which are further entangled to form the double helical chains. [Copyright &y& Elsevier]

A new octamolybdate-supported transition metal complex [{Ni(phen)2}2(Mo8O26)] (1) has been hydrothermally synthesized and characterized by the elemental analyses, IR spectrum, XPS spectra, TG analysis and the single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic space group P21/c, a=10.446(2) Å, b=12.103(2) Å, c=21.956(4) Å, β=97.81(3)°, V=2750.0(10) Å3, and Z=2. The single crystal X-ray diffraction analysis reveals that compound 1 is constructed from a novel unprecedented η-type octamolybdate cluster linked to two {Ni(phen)2}2 coordination complexes. [Copyright &y& Elsevier]

The well-known polyoxomolybdate anion [Mo 8 O 26 ] 4- has been used as a noncoordinating anionic template for the construction of a novel three-dimensional (3D) supramolecular network, [Co(phen) 3 ] 2 [Mo 8 O 26 ]· 2.5H 2 O ( 1 ) (phen = o -phenanthroline). Compound 1 has been characterized by elemental analyses, IR spectrum, X-ray photoelectron spectroscopy (XPS), TG analysis and single-crystal X-ray diffraction. Single-crystal X-ray diffraction analysis reveals that [Co(phen) 3 ] 2+ coordination complexes are packed together via aromatic π-π stacking and hydrogen-bonding interactions, and exhibit an interesting 3D supramolecular network with one-dimensional (1D) box-like channels in which the octamolybdate anions reside. [ABSTRACT FROM AUTHOR]

A new organic–inorganic hybrid titanium vanadate [Ti(2,2′-bpy)V2O7] 1 (2,2′-bpy&z.dbnd6;2,2′-bipyridine) was synthesized by the hydrothermal reaction of NH4VO3, TiCl4, 2,2′-bpy and water. It was determined by elemental analyses, XPS spectra, TG analysis, IR spectrum and the single-crystal X-ray diffraction. Compound 1 crystallizes in monoclinic system, space group P2/c, a=9.6083(19) A˚, b=9.5196(19) A˚, c=14.927(3) A˚, β=99.58(3)°, V=1346.3(5) A˚3, Z=4, λ(Mo Kα)=0.71073 A˚, (R(F)=0.0769 for 2632 observed reflections). The title compound contains an unusual two-dimensional titanium vanadate layered network decorated with the 2,2′-bpy ligands. [Copyright &y& Elsevier]

A novel organic–inorganic hybrid vanadate complex [{Zn(2,2′-bpy)}2V8O21] 1 (2,2′-bpy=2,2′-bipyridine) was synthesized by the hydrothermal reaction of V2O5, ZnCl2, 2,2′-bpy and water. Its structure was determined by elemental analyses, XPS spectra, TG analysis, IR spectrum and the single-crystal X-ray diffraction. Crystal data for 1: C20H16N4O21V8Zn2, triclinic, space group P−1, a=8.0610(16) A˚, b=9.7339(19) A˚, c=11.613(2) A˚, α=85.63(3)°, β=96.59(3)°, γ=72.13(3)°, Z=1 and R(F)=0.0456. The title compound contains an unusual two-dimensional vanadate network grafted with [Zn(2,2′-bpy)]2+ complex. Furthermore, the vanadate layer in 1 consists of left-handed and right-handed helical chains, which are built up from {VO5} square pyramids linked by {VO4} tetrahedra and further interconnected to form the double helical chains. [Copyright &y& Elsevier]

A novel vanadium tellurite V4Te4O18 was synthesized by the hydrothermal reaction of V2O5, Na2TeO3, CuCl2·6H2O, and water. Its structure was determined by elemental analyses, XPS spectra, TG analysis, IR spectrum and the single-crystal X-ray diffraction. The title compound crystallizes in monoclinic system, space group P2(1)/c, a=7.2475(14) A˚, b=9.4901(19) A˚, c=10.073(2) A˚, β=94.45(3)°, V=690.7(2) A˚3, Z=2, λ(MoKα)=0.71073 A˚, (R(F)=0.0316 for 1580 reflections). Data were collected on a Rigaku R-AXIS RAPID IP diffractometer at 293 K in the range of 2.82<θ<27.47°. The title compound exhibits a novel three-dimensional (3D) framework, formed by VO6 octahedra, VO5 square pyramids, TeO4 folded squares, and TeO5 square pyramids via the corner- and/or edge-sharing mode. The 3D framework consists of two different types of one-dimensional (1D) tunnels parallel to a-axes. [Copyright &y& Elsevier]

A novel layered vanadium arsenate [V4O7(HAsO4)2(o-phen)2] 1 (o-phen=o-phenanthroline) was synthesized by the hydrothermal reaction of V2O5, ZnCl2, Na2HAsO4·7H2O, o-phenanthroline (o-phen) and water. Its structure was determined by elemental analyses, ESR spectrum, XPS spectrum, TG analysis, IR spectrum and the single-crystal X-ray diffraction. Compound 1 crystallizes in monoclinic system, space group P2/c, a=10.122(2) A˚, b=9.867(2) A˚, c=15.367(3) A˚, β=102.83(3)°, V=1496.4(5) A˚3, Z=1, λ(MoKα)=0.71073 A˚, (R(F)=0.0397 for 3422 reflections). Data were collected on a Rigaku R-AXIS RAPID IP diffractometer at 293 K in the range of 2.06°<θ<27.48°. The title compound contains an unusual two-dimensional (2D) As–V–O layer with four-, six- and eight-membered rings. The chelating o-phen ligands project perpendicularly above and below the undulating layer. 1 represents the first example of 2D inorganic vanadium arsenate backbone grafted with the directly coordinated organic ligands. Furthermore, the 3D supermolecular architecture is formed by π–π stacking interactions of the o-phen groups between adjacent layers. [Copyright &y& Elsevier]

A novel polyoxomolybdate Mo2O5(ophen)2 1 has been hydrothermally synthesized and characterized by the elemental analyses, IR spectrum, XPS spectrum, TG analysis and the single crystal X-ray diffraction. Pink block crystals of compound 1 crystallize in the monoclinic system, space group C2/c, a=10.287(2), b=13.752(3), c=15.083(3) A˚, β=98.89(3)°, V=2108.0(7) A˚3, Z=4 and R=0.0315. The title compound consists of {Mo2O5} units coordinated with ophen ligands. Compound 1 represents the first polyoxometalate decorated with hydroxylated N-heterocycle ligand. [Copyright &y& Elsevier]

A novel polyoxovanadate [{Ni(quaterpy)(H2O)}2V4O12] · 10H2O (1) (quaterpy =2,2′;6′,2″;6″,2′′′-quaterpyridine) has been hydrothermally synthesized and structurally characterized. The title compound consists of tetranuclear V4O12 4− clusters grafted with [Ni(quaterpy)(H2O)]2+ complex. Compound 1 represents the first polyoxometalate decorated with quaterpy ligand. [Copyright &y& Elsevier]

Octahedral Mn-MIL-100 metal-organic frameworks (MOFs) are first synthesized, which are then used as templates to fabricate the porous Mn 2 O 3 octahedra through a post-calcination strategy. The morphologies and crystalline structures of as-prepared Mn 2 O 3 octahedra are performed by using field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD) and transmission electron microscopy (TEM). A reversible lithium storage capacity as high as 755 mA h/g at 0.2 C after 100 cycles is measured from Lithium-ion batteries (LIBs) where the porous Mn 2 O 3 octahedra are acted as anode. Such a high performance indicates that the porous Mn 2 O 3 structure is an excellent anode candidate of LIBs with high capacity and long-life cycling stability. [ABSTRACT FROM AUTHOR]

The new metal-organic framework [Cd(bqdc)(phen)] n ( 1) (bqdc = 2, 2′-biquinoline-4, 4′-dicarboxylate, phen = 1, 10-phenanthroline) was hydrothermally synthesized by hetero-ring carboxylate ligand and N-containing auxiliary ligand. The structure of 1 was determined by single-crystal X-ray diffraction analysis and further characterized by elemental analyses, IR spectroscopy, X-ray powder diffraction, and TG analysis. Single-crystal X-ray structural analysis shows that complex 1 is an infinite two-dimensional framework containing aesthetic meso-helix. These two-dimensional coordination networks are interconnected through aromatic π-π stacking and C-H ···O hydrogen bonding interactions to afford a 6-connected (412.63) three-dimensional supramolecular architecture. Furthermore, the photoluminescent property of complex 1 was studied. [ABSTRACT FROM AUTHOR]

Abstract: A series of homochiral 1D lanthanide coordination polymers, namely {Ln(H2O)5(NO3)[Sb2(d-tart)2]}·H2O (Ln=Ce (1), Eu (5)) and {Ln(H2O)5(NO3)[Sb2(l-tart)2]}·H2O (Ln=Pr (2), Nd (3), Sm (4), Dy (6)) (tart=tartaric acid) were obtained by spontaneous resolution from presynthesized racemic [Sb2(tart)2]2− metalloligands (MLs). Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by elemental analyses, IR spectra, X-ray powder diffraction, and TG analyses. Compounds 1–6 are isostructural and feature novel 1D homochiral chains. There are three types of hydrogen-bonded helices in the 3D supramolecular network of 1–6. This case is still rare in metal–organic complexes. In addition, the luminescent properties of 4–6 were studied in the solid state at room temperature. [Copyright &y& Elsevier]

Abstract: A novel two-dimensional layered vanadate complex 1 [Ni(phen)H2O][V2O6] has been hydrothermally synthesized and characterized by elemental analyses, i.r., x.p.s., t.g. and single crystal X-ray diffraction. The single crystal X-ray diffraction analysis reveals that compound 1 consists of the chains covalently linked by [Ni(phen)H2O]2+ subunits to form two-dimensional layered polyoxovanadate. It is interesting that the compound 1 consists of left-handed and right-handed helical chains, which are further interconnected to produce the double helical chains. The adjacent two-dimensional layers interact with each other via extensive hydrogen bonds and π–π stacking interactions to form a three-dimensional supramolecular framework. [Copyright &y& Elsevier]

Abstract: A novel three-dimensional (3D) supramolecular compound [Co(2,2′-bipy)3]4[Mo8O26]2·5H2O (1) has been hydrothermally synthesized and characterized by the elemental analyses, TG analysis and the single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic system, space group P21/n, with a=22.171(4)Å, b=14.213(3)Å, c=24.655(5)Å, β=99.14(3)°, V=7671(3)Å3, and Z=2. The [Ni(2,2′-bipy)3]2+ coordinated complexes in compound 1 are packed together via the aromatic π–π stacking interactions and exhibit an interesting 3D honeycomb ‘host’ supramolecular network with 1D channels, in which α- and β-octamolybdate anions ‘guests’ reside. [Copyright &y& Elsevier]

Abstract: A new polyoxoanion-based compound, Na4[Pr(H2O)5]2[IMo6O24]2·7H2O (1), has been synthesized and characterized by elemental analyses, IR, XPS, TG, and single crystal X-ray diffraction. Compound 1 possesses a unique three-dimensional open framework composed of [IMo6O24]5− polyoxoanions covalently linked by praseodymium cations, containing “guest” sodium ions and water molecules in the rectangular channels. [Copyright &y& Elsevier]

Two novel compounds, [Cu2(pydc)2(inta)2(H2O)2]·3H2O 1 (pydc = 2,6-pyridinedicarboxylic acid, inta = isonicotinic acid) and [Cu(pydc)2][Cu(H2O)5]·2H2O 2, have been synthesized in aqueous solution and characterized by single-crystal X-ray diffraction, elemental analyses and IR spectra. Compound 1 exhibits reverse saturable absorption and self-defocusing. X-ray structural analysis reveals that Compounds 1 and 2 both possess π–π stacking and hydrogen-bonding interactions forming three-dimensional (3D) networks. Crystal data for 1: a = 7.2345(14), b = 12.219(2), c = 17.069(3) Å, α = 90.44(3), β = 91.82(3), γ = 93.56(3)°, Z = 1, R1 = 0.0435, wR2 = 0.1216. Crystal data for 2: a = 8.3708(17), b = 27.386(6), c = 9.6170(19) Å, α = 90.00, β = 98.14(3), γ = 90.00°, Z = 3, R1 = 0.0742, wR2 = 0.2160. [ABSTRACT FROM AUTHOR]

A novel organic–inorganic hybrid vanadium arsenate [H3V3O26(AsO4)4(phen)8(H2O)2] · 2H2O 1 (phen=phenanthroline) was synthesized by the hydrothermal reaction of V2O5, VOSO4, Na2HAsO4 · 7H2O, phen and water. Its structure was determined by elemental analyses, XPS spectra, EPR spectrum, TG analysis, IR spectrum and single-crystal X-ray diffraction. [Copyright &y& Elsevier]

Five new polythreaded coordination networks, [Co 2 (L)(bpp)(H 2 O)]·0.25H 2 O ( 1 ), [Co 2 (L)(bim)] ( 2 ), [Co 2 (L)(btb)] ( 3 ), [Co 3 (HL) 2 (phen) 3 ] ( 4 ) and [Ni 2 (L)(bpp) 2 (H 2 O) 2 ]·2H 2 O ( 5 ) (H 4 L = 5,5′-(1,3-phenylenebis(methyleneoxy)diisophthalic) acid, bpp = 1,3-di(4-pyridyl)propane, bim = 1,4-bis(imidazol-1-yl)butane, btb = 1,4-bis(1,2,4-triazol-1-yl)butane, phen = 1,10-phenanthroline), have been synthesized by self-assembly of transition-metal salts with a long flexible tetracarboxylate ligand and N-containing ligands. Their structures were characterized by single crystal X-ray diffraction, elemental analyses, X-ray powder diffraction, IR spectra and TG analyses. Compounds 1 – 3 exhibit unusual (2D → 2D) polythreaded frameworks that are built from 2D layers with dangling arms protruding from one side of the layers. Compound 4 displays a unique (2D → 3D) polythreaded framework constructed from 2D layers with two types of lateral arms. Compound 5 is an uncommon (1D → 1D) polythreaded framework that is first assembled from 1D metal–organic nanotubes (MONTs) with lateral arms protruding from one side of the 1D MONTs. In addition, the magnetic properties of them were also studied. [ABSTRACT FROM AUTHOR]

Abstract: A novel fourfold interpenetrating 3D network compound, 1 (bpy=4,4′-bipyridine), has been synthesized and characterized by elemental analyses, IR, TG analyses, and single-crystal X-ray diffraction. Compound 1 is built up of Cu[P4Mo6O25(OH)6]2 clusters covalently linked by Cu-bpy coordination polymer chains to yield unusual two-dimensional layers, which are further connected together by metal coppers to produce an interesting fourfold interpenetrating 3D network structure. The crystal data for compounds 1: Triclinic, space group , a =12.714(3)Å, b =14.882(3)Å, c =15.369(3)Å, α =72.74(3)°, β =72.12(3)°, γ =65.62(3)°, V =2471.9(9)Å3, Z =1. [Copyright &y& Elsevier]

Abstract: Two composite compounds, [{Cu(PPD)2}(As2W18O60)]·2H2PPD·14H2O 1 (PPD= p-phenylenediamine) and [Cu4(Hen)2As2W18O68]·4H2en·18H2O 2 (en=ethylenediamine) have been prepared under mild hydrothermal conditions with difference in pH values of the initial reaction solutions and structurally characterized by single-crystal X-ray diffraction. Compound 1 exhibits a one-dimensional chain constructed from Wells–Dawson anions and Cu(II) coordination complex. It is the first example of a one-dimensional chain based on Wells–Dawson anions that act as chelate ligands to coordinate with transition metal. Compound 2 is constructed from trivacant Keggin polyanions linked through tetrameric copper unit, which coordinates with organonitrogen ligands. [Copyright &y& Elsevier]

Abstract: Two novel compounds based on Keggin-type polyoxometalates and potassium–glycine coordination complexes, {K2(HGly)2[SiW12O40]}·9H2O 1 and {K3HGly[SiW12O40]}·6H2O 2 (Gly=glycine), have been synthesized and characterized by elemental analyses, IR, TG analyses, cyclic voltammetry and single-crystal X-ray diffraction. Compound 1 is composed of the [α-SiW12O40]4− building blocks, which are linked through potassium–glycine acid fragments to form a novel two-dimensional (2D) network. Compound 2 contains an infinite 2D layer constructed from [SiW12O40]4− building blocks and potassium cations, and adjacent layers are further joined by potassium–glycine complex subunits and potassium cations to yield an unusual three-dimensional (3D) framework. The crystal data for two compounds are the following: 1, monoclinic, space group P21/c, a =9.829(4)Å, b =2.477(3)Å, c =9.777(4)Å, β =104.80(3) o , V =4730.7(17)Å3, Z =4; 2, monoclinic, P2/c, a =2.777(3)Å, b =7.529(4)Å, c =9.219(4)Å, β =99.60(3)°, V =4244.2(15)Å3, Z =4. [Copyright &y& Elsevier]

Abstract: Four new three-dimensional materials built from reduced molybdenum(V) phosphates as building blocks and transitional metal (Co, Zn and Cd) complexes as linkers, (Hbpy)2[Co(bpy)(H2O)]2[Co(H2PO4)2 (HPO4)6(MoO2)12(OH)6] (1), [Co(H2O)4]2[Co(Hbpy)(H2O)]2[Co(bpy)][Co(HPO4)4(PO4)4(MoO2)12(OH)6]·6H2O (2), Na2[Zn(Hbpy)(H2O)2]2[Zn(Hbpy)]2[Zn(HPO4)2(PO4)6(MoO2)12(OH)6]·4H2O (3), (H2bpy)2[Cd(bpy)(H2O)]2[Cd(bpy)(H2O)2]2[Cd(HPO4)4(PO4)4(MoO2)12(OH)6]·2H2O (4) (bpy=4,4′-bipyridine), have been synthesized and characterized by elemental analyses, IR, TG, and single crystal X-ray diffraction. The 3-D framework of 1 is constructed from Co[P4Mo6]2 dimers bonded together with [Co(bpy)] n coordination polymer chains. In compound 2, the Co[P4Mo6]2 dimers are linked by both [Co(bpy)] complex chains and the cobalt dimers to form a 3-D framework. Compounds 1 and 2 represent the first examples of reduced molybdenum(V) phosphates decorated with transition metal complexes chains. The 3-D framework of 3 is constructed from Zn[P4Mo6]2 dimers bonded together with [Zn(bpy)] coordination complexes and [Zn(bpy)(H2O)2] complexes. In compound 4, the Cd[P4Mo6]2 dimers are coordinated with [Cd(bpy)(H2O)] and [Cd(bpy)(H2O)2] complexes to construct a 3-D structure. To our best knowledge, it is the first time that linear ligand 4,4′-bpy molecules have been grafted into the backbone of reduced molybdenum phosphates. Furthermore, the magnetic properties of compounds 1 and 2 are reported. [Copyright &y& Elsevier]

A new metal-organic coordination polymer, [Fe(4,4′-bpy)(PT)(H 2 O) 2 ]·2H 2 O (1) (4,4′-bpy&ThickSpace;=&ThickSpace;4,4′-bipyridine, H 2 PT&ThickSpace;=&ThickSpace;phthalic acid), was prepared by hydrothermal reaction of FeSO 4 ·7H 2 O, 4,4′-bpy and H 2 PT at 110°C and characterized by single-crystal X-ray diffraction analysis. The two-dimensional wave-shaped layers are stacked in ABAB sequence, and therefore form a three-dimensional supramolecular architecture. Six-membered rings with the ‘chair’ conformation, formed via hydrogen-bonds, exist between the layers, are symmetrical with respect to the two-fold axes running along b . [ABSTRACT FROM AUTHOR]

A novel metal–organic compound Zn2(btec)(pipz)(H2O) (1) (btec=1,2,4,5-benzenetetracarboxylate, pipz=piperazine ) has been hydrothermally synthesized and characterized by elemental analyses, IR spectrum, TG analysis, luminescent spectrum and single-crystal X-ray diffraction. The title compound exhibits a novel three-dimensional network, which consists of two-dimensional wave-like sheets linked by zinc metal centers and piperazine. Compound 1 provides the first coordination network structure constructed together by bridging piperazine and btec mixed ligand. The study of the physical properties of 1 demonstrates that it exhibits a fluorescent emission in solid state at room temperature. [Copyright &y& Elsevier]

A novel organic–inorganic hybrid arsenic vanadate [Cu(2,2′-bpy)](VO2)(AsO4) 1 (2,2′-bpy=2,2′-bipyridine) has been hydrothermally synthesized and structurally characterized by elemental analyses, XPS spectra, TG analysis, IR spectrum and the single-crystal X-ray diffraction. Compound 1 crystallizes in triclinic system, space group P1¯, a=5.6848(11) A˚, b=10.275(2) A˚, c=11.807(2) A˚, α=73.70(3)°, β=80.48(3)°, γ=86.09(3)°, V=652.6(2) A˚3, Z=2, λ(Mo Kα)=0.71073 A˚, (R(F)=0.0337 for 2932 reflections). The title compound contains two arsenic vanadate chains linked through [Cu(2,2′-bpy)]2+ complexes. Compound 1 represents the first example of one-dimensional inorganic arsenic vanadate backbone grafted with the transition metal complex. [Copyright &y& Elsevier]

A new polymer (C5H9NO2)2[La(H2O)7CrMo6H6O24] · 11H2O (1), has been synthesized and structurally characterized. Compound 1 exhibits a novel one-dimensional (1-D) chain-like structure consisting of Anderson-type polyoxoanions hexamolybdochromate [CrMo6H6O24]3− covalently linked by hydrated La3+ ions, furthermore pseudo-2-D layers can be formed owing to the strong (La)OH2⋯O hydrogen bonds among adjacent chains. [Copyright &y& Elsevier]

A novel organic–inorganic hybrid vanadium arsenate [(VO)2(HAsO4)2(phen)2] 1 (phen=phenanthroline) has been hydrothermally synthesized and structurally characterized. The title compound contains an unusual 1D ladder-like {V/As/O} chain with the phen ligand directly coordinated to the vanadium arsenate skeleton. To the best of our knowledge, 1 represents the first example of 1D vanadium arsenate decorated with the directly coordinated organic ligands. [Copyright &y& Elsevier]

A novel metal–organic coordination polymer [Fe(phen)(ipt)]n 1 has been hydrothermally synthesized and structurally characterized. Compound 1 exhibits a novel neutral cross double-helical structure composed of left-handed and right-handed helical chains. [Copyright &y& Elsevier]