Search

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 new metal-organic coordination polymer, [Fe(4,4′-bpy)(PT)(H 2 O) 2 ]·2H 2 O (1) (4,4′-bpy  =  4,4′-bipyridine, H 2 PT  =  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]

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 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]

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]

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]

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]

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: 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 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 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]