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A new organic-inorganic hybrid tetrameric polyoxometalate assembled by monovacant Dawson [alpha(2)-P2W17O61](10-) and trivalent cerium cations

机译:单空Dawson [alpha(2)-P2W17O61](10-)和三价铈阳离子组装的一种新的有机-无机杂化四聚体多金属氧酸盐

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A novel octa-nuclear cerium(III)-containing organic-inorganic hybrid polyoxometalate [N(CH3)(4)](8) H-16 [Ce((eta(1)-C6H5NO2)(2)H2O)(6)[Ce(H2O)(3)(alpha(2)-P2W17O61)]} {Ce (eta(2)-C6H5NO2)(2) (H2O)(5) [Ce(H2O) (alpha(2)-P2W17O61)]}](2)center dot 9OH(2)O (C6H5NO2 = isonicotinic acid) (1) was obtained, which had been hydrothermally synthesized and characterized by IR spectrum, thermogravimetric analysis (TGA), and X-ray single-crystal diffraction. Structural analysis indicated at I is composed of four lacunary Dawson-type units [alpha(2)-P2W17O61](10-) joined together by eight cerium cations forming an uncommon zigzag tetrameric structure with eight isonicotinic acids as the organic pendants coordinating to the cerium cations. Magnetic property studies indicate that obvious antiferromagnetic interactions exist in eight Ce3+ cations. (C) 2016 Elsevier B.V. All rights reserved.
机译:一种新型的含八核铈(III)的有机-无机杂多金属氧酸盐[N(CH3)(4)](8)H-16 [Ce((eta(1)-C6H5NO2)(2)H2O)(6) [Ce(H2O)(3)(alpha(2)-P2W17O61)]} {Ce(eta(2)-C6H5NO2)(2)(H2O)(5)[Ce(H2O)(alpha(2)-P2W17O61) ]}]](2)获得中心点9OH(2)O(C6H5NO2 =异烟酸)(1),它已水热合成并通过红外光谱,热重分析(TGA)和X射线单晶衍射进行了表征。在I处指示的结构分析由四个十二烷基Dawson型单元[alpha(2)-P2W17O61](10-)与八个铈阳离子连接在一起,形成一个不常见的锯齿形四聚体结构,其中八个异烟碱酸作为与铈配位的有机侧基阳离子。磁性研究表明,八个Ce3 +阳离子中存在明显的反铁磁相互作用。 (C)2016 Elsevier B.V.保留所有权利。

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