以5-溴水杨醛和乙胺合成的希夫碱为定向配体,采用溶剂热法,在乙腈溶液中与硝酸钴反应,合成了一个新型的钴(Ⅲ)配合物[Co(HL)3](1),HL=5-溴水杨醛缩甲胺希夫碱,其结构经单晶X-射线衍射进行测定,并通过IR对结构进行了表征.配合物1属于单斜晶系,P21/n空间群,晶胞参数a=0.936 93(12)nm,b=2.133 86(19)nm,c=1.457 80(14)nm;β=103.432(11)°;V=2.834 8(5)nm3,Z=4,Dc=1.734g·cm-3,R1=0.080 7,wR2=0.218 7,S=1.03.配合物1中Co(Ⅲ)分别与3个二齿配体上的3个O原子和3个N原子配位,形成轻度扭曲的八面体构型.分子间通过C—H…Br弱作用相互连接形成三维网络结构.
A new cobalt complex [Co(HL)3] (1), (HL= 5-Bromo-2-ethyliminomethyl-phenol), was synthesized by solvothermal method from 3,5-dibromo-2-hydroxy-benzaldehyde, ethylamine and co- balt nitrate. The structure was characterized by IR and XRD. 1 belongs to the monoclinic system, space group P21/n, with a=0.936 93(12)nm,b=2.133 86(19)nm,c=1.457 80(14)nm;β=103.432(11)°;V=2.834 8(5)nm3,Z=4,Dc=1.734g·cm-3,R1=0.080 7,wR2=0.218 7,S=1.03. Each Co( Ⅲ ) atom is six coordinated by three N and three O from three bidentate ligands HL to give a slightly distorted octahedral geometry. Molecules are extended to 3D network through the C-H…Br hydrogen bonds.