作者:Louis K. Peterson、Randeep S. Dhami、Kwat I. Thé
DOI:10.1016/s0020-1693(00)82778-4
日期:1983.1
The complexes Co(tmc)Cl2(III), Co(tmc)2Cl2(IV), Zn(tmc)Cl2(V) and Zn(tmc)2Cl2(VI) were prepared. These compounds are non-electrolytes in solution in acetone and nitromethane. The complexes III and V have pseudo tetrahedral structures in the solid state and in solution in acetone, in which they are monomeric. The most likely solid state structure for the M(tmc)2Cl2 complexes IV and VI is octahedral
摘要通过氨基甲酸酯Me2NNHC(O)OSiMe3的热分解反应合成了1,1,5,5,-四甲基碳酰肼(Me2NNH)2CO(tmc)。制备了配合物Co(tmc)Cl2(III),Co(tmc)2Cl2(IV),Zn(tmc)Cl2(V)和Zn(tmc)2Cl2(VI)。这些化合物是丙酮和硝基甲烷溶液中的非电解质。配合物III和V在固态和在丙酮中的溶液中具有伪四面体结构,其中它们是单体。M(tmc)2Cl2配合物IV和VI最可能的固态结构是八面体。然而,在溶液中,由于失去了一个tmc配体,复合物IV和VI被广泛分解,从而得到分别包含四配位复合物III和V的平衡混合物。在所有四个建筑群中,tmc配体通过羰基氧和一个末端二甲基氨基基团螯合到金属中心。Zn(tmc)Cl2中的配体是非流态的。Zn(tmc)2Cl2(VI)溶液中tmc配体之间的交换在nmr时间尺度上在高于O°C的条件下快速进行。