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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Two extended structures constructed from sandwich-type polyoxometalates functionalized by organic amines
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Two extended structures constructed from sandwich-type polyoxometalates functionalized by organic amines

机译:由有机胺官能化的三明治型多金属氧酸盐构造的两个扩展结构

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摘要

Two new compounds constructed from tetra-Ni-substituted sandwich-type polyoxometalates functionalized by organic groups,(NH4)2[Ni4(enMe)8(H2O)2Ni4(enMe)2(PW9O34)2·9H2O(enMe=1,2-diaminopropane)(1)and Na2[H6N2(CH2)6]2{Ni4[H4N2(CH2)6]2(H2PW9O34)2}·7H2O(2),have been successfully synthesized under hydrothermal conditions.Single-crystal X-ray diffraction analysis is carried out on these two compounds(1 and 2),which both crystallize in the triclinic system.Compound 1 represents the first example of a 2D layer structure consisting of the sandwich-type polyoxoanions with six supporting[Ni(enMe)2]~(2+)moities and two organic functionalized groups.Compound 2 exhibits a 1D chain-like structure based on sandwich-type polyoxoanions and sodium cations,which are further connected into a 2D layer structure via hydrogen-bonding interactions between the 1,6-hexanediamine molecules and the sandwich-type[Ni4(H4N2(CH2)6)2(H2PW9O34)2]~(6-)polyoxoanions.A magnetic study of the two compounds indicates that intramolecular ferromagnetic Ni-Ni interactions exist in the tetranuclear metal cluster.
机译:由有机基团官能化的四镍取代的夹心型多金属氧酸盐构造的两个新化合物,(NH4)2 [Ni4(enMe)8(H2O)2Ni4(enMe)2(PW9O34)2·9H2O(enMe = 1,2-二氨基丙烷)(1)和Na2 [H6N2(CH2)6] 2 {Ni4 [H4N2(CH2)6] 2(H2PW9O34)2}·7H2O(2)已在水热条件下成功合成。单晶X射线对这两种在三斜晶系中结晶的化合物(1和2)进行了衍射分析。化合物1代表由夹心型聚氧阴离子与六种负载[Ni(enMe)2 ]〜(2+)分子和两个有机官能团。化合物2表现出基于三明治型聚氧阴离子和钠阳离子的1D链状结构,它们通过1之间的氢键相互作用进一步连接成2D层结构。 6-己二胺分子和三明治型[Ni4(H4N2(CH2)6)2(H2PW9O34)2]〜(6-)聚氧阴离子。对这两种化合物的磁性研究表明四核金属簇中存在分子铁磁性的Ni-Ni相互作用。

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