摘要
本文报道了4-犤(N-甲基-N-羟乙基)氨基犦苯甲醛缩氨基硫脲(HL)及其金属配合物的合成,通过元素分析、红外光谱、紫外、核磁共振对配体和配合物进行了表征。配合物的组成为ML2(M=Ni?、Cu?、Zn?、Cd?、Pd?)。晶体结构分析表明配体分子中除了羟乙基偏离平面外,其余各原子几乎在一个平面上。晶体结构中存在N-H…O(N1…O1)和O-H…S氢键,形成一个二维网状结构。在与金属离子配合时,配体由硫酮式转变为硫醇式作为负一价二齿配体通过S和β-N与金属离子螯合,形成稳定的中性配合物。
A new ligand, 4 [(N Hydroxyethyl N methyl)amino]benzaldehyde thiosemicarbazone(HL) and its complexes (M=Ni?,Cu?,Zn?,Pd?) were synthesized and characterized with IR, UV, 1H NMR spectra. The structure of HL was determined by X ray analysis. The result reveals that the ligand C11H16N4OS is nearly planar, whereas the hydroxyl group deviates from the plane. The crystal structure is governed by N-H…O(N1…O1)and O-H…S hydrogen bonds leading to the formation of a two dimensional network. The ligand is deprotonated to give the thiol tautomer, coordinated to metal ions via the thiolato sulpur and β nitrogen upon complex formation.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2001年第4期496-500,共5页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.20071001)
教育部骨干教师基金资助课题
