Abstract

The new anionic dimethylmalonate complex {Ni₃₆(H₂O)₁₂(OH)₂₀(HMe₂Mal)(Me₂Mal)₂₉@ [Mg(H₂O)₆]}^5– (Me₂Mal^2– is the dimethylmalonate anion) containing the internal aquated [Mg(H₂O)₆]²⁺ ion and the external [Mg₃(OH)(H₂O)₁₀(C₂H₅OH)₃]⁵⁺ cation was prepared by hydrothermal synthesis. The crystalline compound isolated from the reaction mixture and characterized by X-ray diffraction had the formula [Mg₃(OH)(H₂O)₁₀(C₂H₅OH)₃]{Ni₃₆(H₂O)₁₂(OH)₂₀(HMe₂Mal)(Me₂Mal)₂₉@[Mg(H₂O)₆]}·25H₂O (I) (CIF file CCDC no. 2038910). The new anionic complex {Ni₃₆(H₂O)₁₂(OH)₁₉(O)(Cbdc)₃₀@[Na(H₂O)₆]}^8– (Cbdc^2– is the cyclobutane-1,1-dicarboxylate anion) containing the internal aquated [Na(H₂O)₆]⁺ ion and outer-sphere tetrabutylammonium cations was prepared from an ethanol–acetonitrile solution. The crystals isolated from the reaction mixture were characterized by X-ray diffraction and were described the formula (NBu₄)₈{Ni₃₆(H₂O)₁₂(OH)₁₉(O)(Cbdc)₃₀@[Na(H₂O)₆]} (CIF file CCDC no. 2038909) (II). It was found that the magnetic behavior of complex I is due to competing ferro- and antifferromagnetic exchange interactions between paramagnetic nickel(II) ions.

中文翻译：

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镍与丙二酸根阴离子和内部水合镁和钠阳离子的36-核配位化合物

摘要

新的阴离子丙二酸二甲酯络合物{Ni ₃₆（H ₂ O）₁₂（OH）₂₀（HMe ₂ Mal）（Me ₂ Mal）₂₉ @ [Mg（H ₂ O）₆ ]} ^5–（Me ₂ Mal ^2–是含有内部[Mg（H ₂ O）₆ ] ²⁺离子和外部[Mg ₃（OH）（H ₂ O）₁₀（C ₂ H ₅ OH）₃ ] ^5+的二甲基丙二酸根阴离子）通过水热合成制备阳离子。从反应混合物中分离并通过X射线衍射表征的结晶化合物具有式[Mg ₃（OH）（H ₂ O）₁₀（C ₂ H ₅ OH）₃ ] {Ni ₃₆（H ₂ O）₁₂（OH） ）₂₀（HMe ₂ Mal）（Me ₂ Mal）₂₉ @ [Mg（H ₂ O）₆ ]}·25H ₂ O（I）（CIF文件CCDC编号2038910）。新的阴离子络合物{Ni ₃₆（H ₂ O）₁₂（OH）₁₉（O）（CBDC）₃₀ @的[Na（H ₂ O）₆ ]} ^-8- （CBDC ^2-是环丁烷-1,1-二羧酸根阴离子）包含内部aquated的[Na（H ₂ O）₆ ] ⁺离子和外圈四丁基铵阳离子是从乙醇-乙腈溶液中制备的。从反应混合物中分离出的晶体通过X射线衍射进行表征，并描述为式（NBu ₄）₈ {Ni ₃₆（H ₂ O）₁₂（OH）₁₉（O）（Cbdc）₃₀ @ [Na（H _2） O）₆]}（CIF文件CCDC编号2038909）（II）。发现配合物I的磁性行为是由于顺磁性镍离子（II）之间相互竞争的铁磁性和反铁磁性交换相互作用引起的。