某些二价金属尼克酰胺配合物的红外光谱研究

INFRARED SPECTRA OF NICOTINAMIDE COMPLEXES WITH SOME DIVALENT METAL IONS

对Mn(Nica)_2Cl_2、Fe(Nica)_2Cl_2、Co(Nica)_2Cl_2、Ni(Nica)_2Cl_2、Cu(Nica)_2Cl_2、Zn(Nica)_2Cl_2配合物的红外光谱进行了分析,除Zn(Nica)_2Cl_2是简单四面体结构之外。其余皆为多聚八面体结构,其中Cu(Nica)_2Cl_2为多聚变形八面体结构,Nica均以吡啶氮与各金属离子配位。

Complexes Mn(Nica)_2Cl_2, Fe(Nica)_2Cl_2, Co(Nica)_2Cl_2, Ni(Nica)_2Cl_2, Cu(Nica)_2Cl_2 and Zn(Nica)_2Cl_2 have been characterized on the basis of infrared spec- tra. The coordination polyhedron of Mn(Nica)_2Cl_2, Fe(Nica)_2Cl_2 Co(Nica)_2Cl_2, Ni (Nica)_2Cl_2, and Cu(Nica)_2Cl_2 can be described as a polymeric octahedral structure, in them Cu(Nica)_2Cl_2 as a distorted polymeric octahedral structure, and that of Zn (Nica)_2Cl_2 as a tetrahedral structure. Nictinamide, as monodentate ligand, coordinates with metal ions through pyridine ring nitrogen in all complexes.