含N,N,O,O四齿席夫碱Cu~Ⅱ、Ni~Ⅱ配合物的合成、结构及性质表征  

Synthesis,crystal structure and property charaterization of copper(Ⅱ) and nickel(Ⅱ) complexes of N,N,O,O-donor tetradentate Schiff base

作　　者：李国强[1] 赵燕玲[1] 骆小方 李辽阔 陈浩[1] 

机构地区：[1]重庆文理学院,重庆402160 [2]重庆市计量质量检测研究院第三分院,重庆402160 [3]重庆市彭水苗族土家族自治县环境保护局,重庆409600

出　　处：《化学研究》2017年第6期715-721,共7页Chemical Research

基　　金：重庆市教育委员会资助项目(KJ1601115);重庆市教育委员会资助项目(KJ1401114);重庆文理学院科研项目(XSKY2016058);重庆文理学院科研项目(XSKY2016067)

摘　　要：采用N,N,O,O四齿席夫碱配体HL_1、HL_2分别与Ni(OAc)_2·4H_2O和Cu(OAc)_2·2H_2O进行反应,合成了3个配合物NiC_(22)H_(22)N_2O_2(1)、CuC_(22)H_(22)N_2O_2(2)和CuC_(24)H_(26)N_2O_2(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C222_1.3个配合物的分子单元结构相似,中心金属离子Cu~Ⅱ或Ni~Ⅱ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.The three complexes NiC_(22)H_(22)N_2O_2(1),CuC_(22)H_(22)N_2O_2(2) and CuC_24)H_(26)N_2O_2(3) were synthesized from the reaction of N,N,O,O-donor tetradentate Schiff base HL_1,HL_2 with Ni(OAc)_2·4 H_2O and Cu(OAc)_2·2H_2 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 C222_1.The molecule structures of three complexes are similar,and the central metal ion CuⅡor NiⅡcoordinated 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 diffraction,we also discussed the configuration of the ligand before the coordination reaction occurred.

关 键 词：席夫碱 铜 镍 晶体结构 

分 类 号：O614.3[理学—无机化学]