α-二亚胺镍化合物NiL2的合成及晶体结构

Synthesis and crystal structure of the mononuclear nickel compound NiL_2 withα-diimine

在无水无氧条件下利用金属钾在乙醚中还原LNiCl_2得到了单核镍化合物NiL_2(L=2,4,6-三甲基苯基丁二亚胺),用X-射线单晶衍射仪测定了该化合物与LNiCl_2·THF的晶体结构.结果表明:NiL_2中镍原子与2个配体中的4个氮原子形成4配位结构,该结构中配体化合价为-1价.

The reduction of LNiCl2 by potassium in Et2O led to one mononucleax Ni compound NiL2 （L=[（2, 4, 6-Me3C6H3）N-（Me）C]2）. The structures of NiL2 and LNiCl2.THF were determined by X-ray single-crystal diffraction. In mononuclear compound NIL2, the nickel atom was four-coordinated by the nitrogen donors of two L ligands in a distorted tetrahedral geometry and the α-diimine ligand has been reduced to a mono anion.