含N,N,O,O四齿席夫碱CuⅡ、NiⅡ配合物的合成、结构及性质表征

摘要

The three complexes NiC22H22N2O2(1), CuC22H22N2O2(2) and CuC24H26N2O2(3) were synthesized from the reaction of N,N,O,O-donor tetradentate Schiff base HL1 , HL2 with Ni( OAc) 2 · 4H2 O and Cu( OAc) 2 ·2H2 O, and characterized by elemental analysis, FTIR, X-ray diffraction and so on. Complex 1 and 2 belong to monoclinic system with space group P21/c, while complex 3 belongs to orthorhombic system with space group C2221 . The molecule structures of three complexes are simi-lar , and the central metal ion CuⅡ or NiⅡ coordinated with nitrogen and oxygen atoms to form a slightly distorted square planar configuration. The TGA analysis showed that three complex have a good thermal stability, and the complex 3 is the best. Besides, combining with the result of X-ray single crystal dif-fraction, we also discussed the configuration of the ligand before the coordination reaction occurred.%采用N,N,O,O四齿席夫碱配体HL1、HL2分别与Ni(OAc)2·4H2 O和Cu(OAc)2·2H2 O进行反应,合成了3个配合物NiC22H22N2O2(1)、CuC22H22N2O2(2)和CuC24H26N2O2(3).利用元素分析、红外和X射线单晶衍射等技术进行表征,结果表明,配合物1和2均属于单斜晶系,空间群为P21/c,而配合物3属于正交晶系,空间群为C2221.3个配合物的分子单元结构相似,中心金属离子CuⅡ或NiⅡ与配体的氮、氧原子配位形成稍微扭曲的四方平面构型.热重分析结果表明,3个配合物均具有良好的热稳定性,且配合物3的热稳定性更高.此外,结合X射线单晶衍射数据,文章还讨论了配位反应发生前,配体在溶液中存在的主要构型.