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Chinese Journal of Structural chemistry 2009年第1期28卷 72-76页

作者：周艳红张宏关丽崔术新逄媛媛 institute of polyoxometalate chemistry Department of Chemistry Northeast University

A novel compound [H-IDP]4[PMo12O40]·8H2O 1 based on Keggin-type phosphor- molybdate has been synthesized by hydrothermal method and characterized by IR spectroscopy, elemental analyses and single-crystal X-ray diffraction. The composite crystallizes in the mono- clinic system, space group C2/m with a = 13.937（5）, b = 27.033（5）, c = 10.857（5） A, β = 122.489（5）°, V = 3450（2）A^3, Mr = 2611.11, Z = 2, Dc = 2.498 g/cm^3, F（000） = 2486,μ = 2.243 mm^-1, the final R = 0.0568 and wR = 0.1216 for 2707 observed reflections with I 〉 2σ（I）. X-ray structural study shows that 1 consists of a [PMo12O40]^4- polyanion, four protonated IDP cations and eight H2O molecules. In the structure of 1, a 3D network forms by hydrogen bond of [PMo12O40]^4- polyanion, HIDP^＋ cation and H2O molecules. Upon excitation wavelength of 280 nrn in hydroxylic solvents at room temperature, 1 shows fluorescence property.

关键词： hydrothermal synthesis phosphomolybdate 3D network

Hydrothermal Synthesis,Crystal Structure and Spectral Characterization of a New Copper Isopolytungstate: [Cu(phen)_3][W_6O_(19)]

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Chinese Journal of Structural chemistry 2006年第7期25卷 837-843页

作者： MENG Fan-Xia LIU Kun CHEN Ya-Guang institute of polyoxometalate chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 China

An unusual inorganic-organic hybrid hexatungstate complex [Cu（phen）3][W6O19] 1 （C36H24 CuN6O19W6, Mr= 2011.20） was hydrothermally synthesized and characterized by singlecrystal X-ray diffraction, IR spectrum, UV-VIS spectrum and elemental analyses. This compound crystallizes in the monoclinic system, space group C2/c with a = 19.1005（11）, b = 11.2585（11）, c = 20.2867（15） A, β= 102.177（2）°, V= 4264.4 A^ 3, μ（MoKa） = 16.691 mm^-1, Dc = 3.133 g/cm^3, Z = 4, F（000） = 3628, the final R = 0.0338 and wR = 0.0798 for 4090 observed reflections with I 〉 2σ（I）. The result of structure determination shows that the crystal structure is constructed from [W6O19]^2- cluster anions and [Cu（phen）3]^2＋ complex fragments, which are held together into a three-dimensional network through hydrogen-bonding interactions.

关键词： hydrothermal synthesis tungstates polyoxometalates copper coordination complexes

Hydrothermal Synthesis and Properties of Open-Framework Mixed-valence Iron Phosphates IIIII21.543FeFe(PO) with Three-dimensional Structure

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Chinese Journal of chemistry 2004年第1期22卷 55-59页

作者：段丽颖刘福臣王恩波李阳光胡长文许林 institute of polyoxometalate chemistry Department of ChemistryNortheast Normal University

The open-framework iron phosphate IIIII21.543FeFe(PO) was hydrothermally synthesized and characterized by elemental analysis, IR, EPR, XPS and single crystal X-ray diffraction analysis. The title compound crystallized in the triclinic, space group P1with a=0.64724(4) nm, b=0.79651(6) nm, c=0.94229(5) nm, =104.447(2)? =108.919(4)? =101.741(4)? V=0.42302(5) nm3, Z=1 and R1 (wR2)=0.0307 (0.0793). Crystal data were collected on a Rigaku R-AXIS RAPID IP diffractometer with Mo K?(=0.071073 nm) at 293(2) K in the range of 2.43埃迹?7.46? The structure of 1 consists of 19 non-hydrogen atoms including three and a half crystallographically in-dependent Fe and three P atoms. Fe(1) connects its symmetrical Fe(1A) through bridging oxygen forming a dimer and the dimers are connected by Fe(4) forming an infinite staircase-like chain. Fe(2) and Fe(3) connect the infinite chains into a layer with bridging oxygen. Layers are interconnected via Fe(4) forming the six-membered and eight-membered channel systems.

关键词： iron phosphate open framework three-dimensional structure

Orientations of Rare-earth-containing Heteropolyoxometalates with Different Sizes in the Interlayer of Synthetic Multibilayer Films

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Chinese Chemical Letters 2002年第9期13卷 887-890页

作者： Yong Hui WANG Xin Long WANG Chang Wen HU En Bo WANG institute of polyoxometalate chemistry Faculty of ChemistryNortheast Normal UniversityChangchun 130024

Three rare-earth-containing heteropolyoxometalates with different sizes, Na9[Eu(W5 O18)2], K13[Eu(SiW11O39)2], and K17[Eu(P2W17O61)2], have been incorporated by self-assembly into the interlayer of synthetic multibila... 详细信息

关键词： Rare-earth-containing heteropolyoxometalate synthetic multibilayer film DODA orientation.

Kinetics of Photocatalytic Degradation of Formic Acid over Silica Composite Films Based on polyoxometalates

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Chinese Chemical Letters 2002年第6期13卷 575-578页

作者： Dan Feng LI Yi Hang GUO Chang Wen HU Li MAO En Bo WANG institute of polyoxometalate chemistry Northeast Normal UniversityChangchun 130024

The composite films, XW11O39n-/SiO2, (X refers to Si, Ge or P, respectively) were prepared by tetraethoxysilane (TEOS) hydrolysis sol-gel method via spin-coating technique. Formation of the composite films is due to strong chemical reaction of organic silanol group with the surface oxygen atoms of XW11O39n-, resulted in the saturation of the surface of the lacunary polyoxometalates (POMs). Therefore, the coordination structural model of the films was proposed. As for the films, retention of the primary Keggin structure was confirmed by UV-vis, FT-IR spectra and MAS NMR. The surface morphology of the films was characterized by SEM, indicating that the film surface is relatively uniform, and the layer thickness is in the range of 250~350 nm. Aqueous formic acid (FA) (0-20 mmol/L) was degraded into CO2 and H2O by irradiating the films in the near-UV area. The results show that all the films have photocatalytic activities and the degradation reaction follows Langmuir-Hinshelwood first order kinetics.

关键词： polyoxometalates sol-gel spin coating composition film photocatalysis kinetics formic acid.

X-ray Crystal Structure and Characterization of Tetra-vanadyl Capped Highly Reduced polyoxometalate Anion [PMo_5~ⅥMo_7~ⅤO_(40)(V~ⅣO)_4]^(2-)

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Chemical Research in Chinese Universities 2006年第1期22卷 17-20页

作者： CHANG Song QIN Chao WANG Xin-long LI Yang-guang WANG En-bo institute of polyoxometalate chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China

A novel polyoxometalate [H3O][PMo5^ⅥMo7^ⅤO40 （V^ⅣO）4]·6Py （Py = pyridine） was synthesized and characterized by IR spectrometry, TG and single-crystal X-ray diffraction. The title compound crystallizes in the monoclinic space group（C2/m） with α=1.3680（3） nm, b=2.1740（4） nm, c=1.1630（2） nm, β= 118.62（3）°, V= 3. 0362 （10） nm^3, Z = 2, and Rt （wR2） = 0. 0772 （0. 2312）. The compound contains a highly reduced vanadylpoly-molybdophosphate polyoxometalate anion with a four-capped structure. The four {VO} units cap four opposite pits of the pseudo-Keggin core {PMo12O40}.

关键词： Highly reduced polyoxometalate anion Hydrothermal synthesis Four-capped Pseudo-Keggin core

Ce(H_2O)_7Al(OH)_6Mo_6O_(18)·4H_2O: A New One-dimensional Zigzag Chainlike Structure of Anderson Cluster Linked by Cerium Ions

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Chemical Research in Chinese Universities 2005年第6期21卷 637-640页

作者： JIN Hua QI Yan-fei QIN Chao WANG Xin-long WANG En-bo XU Lin institute of polyoxometalate chemistry Faculty of Chemistry Northeast Normal University Changchun 130024 P. R. China

A new cerium polyoxomolybdate { [Ce （ H2 O） 7 Al （ OH ） 6 Mo6 O18 ] · 4H20 } （ compound 1 ） was synthesized and characterized by X-ray diffraction analysis, elemental analysis, TG analysis and IR spectrometry. Compound 1 exhibits a zigzag chain-like structure, which is constructed from an Anderson type anion and rare earth metal, Ce（ Ⅲ ）. These 1-D chains are further extended into a 3-D network by the aid of muhipoint hydrogen-bonding interactions.

关键词： One-pot reaction Zigzag chain-like polymer Rare earth metal polyoxometalate

An Organic-inorganic Hybrid Two-dimensional Bilayer Assembled from 1:2-Type[Er(α-PW11O39)2]^11–Moieties and[Cu(dap)2]^2+Linkers

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Chinese Journal of Structural chemistry 2016年第1期35卷 39-45页

作者：罗婕宋开放赵浩哲赵俊伟陈利娟 Henan Key Laboratory of polyoxometalate chemistry Institute of Molecular and Crystal EngineeringCollege of Chemistry and Chemical EngineeringHenan University

A new organic-inorganic hybrid phosphotungstate-based Cu^Ⅱ-Er^Ⅲ heterometallic derivative[Cu（dap）2（H2O）][Cu（dap）2]4.5[Er（α-PW11O39）2]·4H2O（1,dap = 1,2-diaminopropane） has been hydrothermally prepared and characterized by elemental analysis,IR spectra and X-ray single-crystal diffraction.1 belongs to the triclinic space group P1 with a = 13.453（3）,b =20.137（4）,c = 24.565（4） A,α = 103.468（4）,β = 103.829（4）,γ = 98.296（4）°,V= 6148.0（19） A°3,Z =2,μ = 22.212 mm^-1,GOOF = 1.030,R = 0.0744 and wR = *** analysis indicates that1 exhibits a special two-dimensional double-layer structure constructed from l：2-type[Er（α-PW11O39）2]^11- moieties and[Cu（dap）2]^2＋ *** the topological viewpoint,1 displays a scare two-dimensional five-connected topology in which the[Er（α-PW11O39）2]^11- moieties function as the five-connected ***,its thermogravimetric behavior has been studied.

关键词： polyoxometalate heterometallic complex phosphotungstate

A Novel Three-dimensional Framework with Tunnels Based on the Cobalt-containing Molybdenum Phosphate Moieties

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Chinese Journal of chemistry 2003年第5期21卷 515-519页

作者：黄如丹刘福臣李阳光袁梅王恩波德格吉乎 institute of polyoxometalate chemistry Department of Chemistry Northeast Normal University Changchun Jilin 130024 China School of Chemical Engineering & Materials Science Beijing Institute of Technology Beijing 100081 China institute of polyoxometalate chemistry Department of Chemistry Northeast Normal University Changchun Jilin 130024 China

A novel compound (H(2)en)(5) [CoMo12O50P8 (OH)(12)] . 2H(2)O (1) (en = H2NCH2CH2NH2) has been hydrothermally synthesized and characterized by elemental analyses, IR, EPR, XPS spectra and single-crystal X-ray diffraction analyses. Compound 1 crystallizes in a triclinic system, space group P1, with a = 1.1863 (2) nm, b = 1.3361(3) nm, c = 1.3783(3) nm, alpha = 88.13(3)degrees, beta = 70.09(3)degrees, gamma = 65.24(3)degrees, V = 1.8497(6) nm(3), and R = 0.0417. The basic building blocks of compound 1 an {Mo6P4} clusters forming dimers through the {CoO6} octahedra. Compound 1 exhibits an unusual three-dimensional framework with tunnels owing to the extensive hydrogen bonding interactions between the dimers and H(2)en.

关键词： hydrothermal synthesis molybdenum phosphate dimer hydrogen bond

A New 1-D Organic-inorganic Hybrid Polyoxotungstate Constructed from Sandwich-type Polyanions and Copper^Ⅱ-organoamine Complexes

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Chinese Journal of Structural chemistry 2017年第5期36卷 805-811页

作者：李杰田淑芳刘云马鹏涛 Henan Key Laboratory of polyoxometalate chemistry Institute of Molecular and Crystal Engineering College of Chemistry and Chemical Engineering Henan University

A new organic-inorganic hybrid sandwich-type polyoxotungstate [Cu（dien）-（H2O）2]2[{Cu（dien）（H2O）}3{Cu（4.5）W（0.5）（B-α-Sb W9O（33））2}]（OH）4·7H2O（1, dien = diethylenetriamine） has been hydrothermally synthesized and structurally characterized by elemental analyses, IR spectroscopy, TG analysis, and single-crystal X-ray diffraction analysis. Crystal data for 1： monoclinic, C2/c, a = 31.527（3）, b = 13.9309（13）, c = 24.297（2） A, β = 1108.269（2）°, V = 10133.2（17） A3, Dc = 4.024 g/cm3 and Z = 4. X-ray crystallographic study shows that the molecular structure of 1contains an infrequent penta-nuclearity {Cu4.5W0.5} cluster sandwiched polyanion [{Cu4.5W0.5（B-α-Sb W9O33）2}]6-, on which three [Cu（dien）（H2O）]2＋ complexes decorated as pendants. Interestingly, two [Cu（dien）（H2O）]2＋ pendants linked the two neighboring sandwich-type polyanions via double Cu-μ2-O-W bridges, resulting in a 1-D chain. The magnetic measurements show compound 1exhibits obvious antiferromagnetic interactions.

关键词： polyoxometalate, sandwich, copper, magnetic properties