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题名: Arsenicum-centered molybdenum-vanadium polyoxometalates bearing transition metal complexes: Hydrothermal syntheses, crystal structures and magnetic properties
作者: Li, FY;  Xu, L;  Wei, YG;  Wang, XL;  Wang, WJ;  Wang, EB
关键词: polyoxometalate ;  hydrothermal synthesis ;  crystal structure ;  magnetic properties
刊名: JOURNAL OF MOLECULAR STRUCTURE
发表日期: 2005-10-28
DOI: 10.1016/j.molstruc.2005.05.047
卷: 753, 期:1-3, 页:61-67
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The tetra-capped Keggin anion-supported Cobalt-Phenanthroline complex [Co-2(phen)(2)(OH)(2)(H2O)(4)](0.5)[{Co(phen)(2)(H2O)}(2)(AsMo6Mo2)-Mo-VI (V)A(8)(IV)O(44)]center dot 2H(2)O (1) and the bicapped Keggin anion-based Nickel-phenanthroline compound [Ni(phen)(2)H2O](2)[(AsMo11MoO40)-Mo-VI-O-V((VO2)-O-IV)0.5]. 2H(2)O(2), have been hydrothermally synthesized and structurally characterized by elemental analyses, single crystal X-ray diffraction, IR and X-ray photoelectron spectrum. The interesting structural feature of 1 is that there are two types of free complex cation [Co-2(phen)(2)(OH)(2)(H2O)(4)](2+) in different orientations in the crystal structure of 1, and these free complex cations coexist in the space between polyoxometalate clusters. The structure of compound 2 is very like compound 1 except that the Keggin unit is bi-capped instead of tetra-capped. Compounds 1 and 2 are examples that Arsenicum-centered vanadomolybdate anion acts as an active building block in the fabrication of polyoxometalates-supported hybrid solids. Then, the magnetic characteristic of I is typical of a dominant ferromagnetic interactions in the 6-300 K temperature range and a succedent antiferromagnetic interactions in the very low temperature range (2-6 K), while the magnetic behavior for 2 is characteristic of a dominant ferromagnetic interactions in the 6-300 K temperature range and succedent antiferromagnetic interactions in the very low temperature range (2-6 K). (c) 2005 Elsevier B.V. All fights reserved.
关键词[WOS]: INORGANIC HYBRID MATERIALS ;  ULTRATHIN COMPOSITE FILMS ;  NUCLEARITY SPIN CLUSTERS ;  SUPRAMOLECULAR ASSEMBLIES ;  KEGGIN STRUCTURE ;  ANION ;  DERIVATIVES ;  FIELD ;  ESCA
语种: 英语
WOS记录号: WOS:000232895800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139641
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.NE Normal Univ, Dept Chem, Changchun 130024, Peoples R China
2.Peking Univ, State Key Lab Struct Chem Unstable & Stable Speci, Inst Chem Phys, Coll Chem & Mol Engn, Beijing 100871, Peoples R China

Recommended Citation:
Li, FY,Xu, L,Wei, YG,et al. Arsenicum-centered molybdenum-vanadium polyoxometalates bearing transition metal complexes: Hydrothermal syntheses, crystal structures and magnetic properties[J]. JOURNAL OF MOLECULAR STRUCTURE,2005,753(1-3):61-67.
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