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Keggin型钼氧酸盐化合物{PMo7ⅥMo4ⅤVⅤO40(VⅣO)2[Co(bipy)2(H2O)]2}[Co(bipy)3]2{PMo7ⅥMo4ⅤVⅤO40(VⅣO)2}·6H2O的合成、结构及性质表征

Synthesis and Crystal Structure of a Keggin-Polymotybdate Complex {PMo7ⅥMo4ⅤVⅤO40(VⅣO)2[Co(bipy)2(H2O)]2} [Co(bipy)3]2{PMo7ⅥMo4ⅤVⅤO40(VⅣO)2}·6H2O
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摘要 合成了一种新颖的修饰型的Keggin结构多金属氧酸盐超分子化合物,并用单晶衍射仪测定了其晶体结构,元素分析及红外光谱等进一步佐证了化合物的结构.配合物为三斜晶系,P-1空间群,晶胞参数为a=12.969 4(11),b=14.025 0(11),c=24.518 0(19),α=86.511 0(10)°,β=83.033 0(10)°,γ=62.777 0(10)°,V=3 936.4(5)3,Z=1.配合物是一种特殊的双帽双支撑型的多金属氧酸盐,它是由双帽假Keggin[PMo7ⅥMo5ⅤO40(VⅣO)2]^4-单元,{Co(2,2′-bipy)2(H2O)}和[Co(bipy)3]^2+部分组成.其中,两个金属有机阳离子{Co(2,2′-bipy)2(H2O)}和两个盖帽的钒原子上的末端氧原子通过共价连接在[PMo7^ⅥMo4^ⅤV^ⅤO40(V^ⅣO)2]上,并通过氢键作用形成三维层状结构. A new Keggin-polyoxometalate complex,{PMo7^ⅥMo4^ⅤV^ⅤO40(V^ⅣO)2[Co(bipy)2(H2O)]2}[Co(bipy)3]2{PMo7^ⅥMo4^ⅤV^ⅤO40(V^ⅣO)2}·6H2O has been synthesized in aqueous.The structure was determined by single crystal X-ray diffraction and characterized by elemental analysis,IR spectroscopy and thermogravimetric analysis.Crystal data for it:Triclinic,space group P-1,a=12.9694(11),b=14.0250(11),c=24.5180(19),α=86.5110(10)°,β=83.0330(10)°,γ=62.7770(10)°,V=3936.4(5)3,Z=1.Complex is an unusual bicapped bisupporting POM.It is composed of bicapped pseudo-keggin [PMoⅥ7MoⅤ5O40(VⅣO)2]4-,[Co(bipy)3] and {Co(2,2′-bipy)2(H2O)} fragments.One [PMoⅥ7MoⅤ5O40(VⅣO)2] unit acts as a ligand covalently bonded to two {Co(2,2′-bipy)2(H2O)} subunits through the terminal oxygen atoms of the two capping V atoms.The 3-D structure constructed by weak hydrogen-bonded and electrostatic interaction.
出处 《北华大学学报(自然科学版)》 CAS 2010年第3期213-217,共5页 Journal of Beihua University(Natural Science)
基金 国家自然科学基金资助项目(20773057)
关键词 多金属氧酸盐 水热合成 晶体结构 polyoxometalate hydrothermal synthesis crystal structure
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参考文献10

  • 1Bi L H,Wang E B,Peng J.Crystal Structure and Replacement Reaction of Coordinated Water Molecules of the Heteropoly Compounds of Sandwich-Type Tungstoarsenates[J].Inorg Chem,2000,39(4):671-679.
  • 2Yamase T.Photo-and Electrochromism of Polyoxometalates and Related Materials[J].Chem Rev,1998,98(1):307-325.
  • 3Hu C W,He Q L,Zhang Y H.Synthesis of New Types of Polyoxometallate Pillared Anionic Clays:31P and 27Al MAS NMR Study of the Orientation of Intercalated PW11VO4-40[J].J Chem Soc Chem Commun,1996,(2):121-122.
  • 4Bi L H,Huang R D,Peng J.Rational Syntheses,Characterization,Crystal Structure and Replacement Reactions of Coordinated Water Materials of[As2W18M4-(H2O)2O68] 10-(M=Cd,Co,Cu,Fe,Mn,Ni or Zn)[J].J Chem Soc Dalton Trans,2001(2):121-129.
  • 5Kozhevnikov I V.Catalysis by Heteropoly Acids and Multicomponent Polyoxometalates in Liquid-Phase Reactions[J].Chem Rev,1998,98(1):171-198.
  • 6Guo Y H,Wang Y H,Hu C W.Microporous Polyoxometalates POMs/SiO2:Synthesis and Photocatalytic Degradation of Aqueous Organocholorine Pesticides[J].Chem Mater,2000,12(11):3501-3508.
  • 7Xu Y,Xu J Q,Zhang K L,et al.Keggin Unit Supported Transition Metal Complexes:Hydrothermal Synthesis and Characterization of[Ni(2,2′-bipy)3] 1.5[PW12O40Ni(2,2′-bipy)2(H2O)] ·0.5H2O and[Co(1,10-phen)3] 1.5[PMo12O40Co(1,10-phen)2(H2O)] ·0.5H2O[J].Chem Commun,2000,(3):153-154.
  • 8Yuan M,Li Y G,Wang E B,et al.Modified Polyoxometalates:Hydrothermal Syntheses and Crystal Structures of Three Novel Reduced and Capped Keggin Derivatives Decorated by Transition Metal Complexes[J].Inorg Chem,2003,42:4321-4324.
  • 9Pope M T.Heteropoly and Isopoly Oxometalates[M].Berlin:Springer-Verlag,1983:1-10.
  • 10W T Liu,H H Thorp.Bond Valence Sum Analysis of Metal-ligand Bond Lengths in Metalloenzymes and Model Complexes 2 Refined Distances and Other Enzymes[J].Inorg Chem,1993,32:4102-4105.

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