Heteronuclear alcoholate complexes [M{Al(OiPr)₄}₂(bipy)] (2‐M, M = Fe, Co, Ni, Cu, Zn) and [M{Al(OcHex)₄}₂(bipy)] (3‐M, M = Fe, Co, Ni, Zn) are formed by adduct formation of [M{Al(OiPr)₄}₂] (1‐M, M = Fe, Co, Ni, Cu, Zn) with 2,2'‐bipyridine and transesterification reaction with cHexOAc. According to crystal structure analyses, in 2‐M and 3‐M the central transition metal ion M²⁺ is coordinated by two chelating Al(OR)₄^– moieties and one bipyridine ligand in an octahedral arrangement. Treating 1‐Cu with 2,2'‐bipyridine leads to a reduction process, whereat the intermediate [Cu{Al(OiPr)₄}(bipy)₂][Al(OiPr)₄] (4) could be structurally characterized. During conversion of the iso‐propanolate ligands in 1‐Cu to cyclohexanolate ligands, Cu²⁺ is reduced to Cu⁺ forming [Cu{Al(O^cHex)₄}(py)₂] (5). UV/Vis‐spectra and results of thermolysis studies by TG/DTA‐MS are reported.

中文翻译：

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异核过渡金属醇铝的合成，晶体结构和热解研究

异核醇盐配合物[M {Al（O i Pr）₄ } ₂（bipy）]（2‐M，M = Fe，Co，Ni，Cu，Zn）和[M {Al（O c Hex）₄ } ₂（ bipy）]（3‐M，M = Fe，Co，Ni，Zn）通过[M {Al（O i Pr）₄ } ₂ ]（1 ‐ M，M = Fe，Co，Ni， Cu，Zn）与2,2'-联吡啶和c HexOAc进行酯交换反应。根据晶体结构分析，在2M和3M中中心过渡金属离子M ²⁺由两个八面体排列的螯合Al（OR）₄ ^–部分和一个联吡啶配体协调。用2,2'-联吡啶处理1-Cu会导致还原过程，其中中间体[Cu {Al（O i Pr）₄ }（bipy）₂ ] [Al（O i Pr）₄ ]（4）可能是结构特征。在1-Cu中异丙醇酸酯配体转化为环己酸酯配体的过程中，Cu ²⁺还原为Cu ⁺形成[Cu {Al（O ^c Hex）₄ }（py）₂ ]（5）。报告了UV / Vis光谱和TG / DTA-MS的热解研究结果。