摘要
利用水热法合成了3种吡啶-2,6-双酰胺分子吡啶-2,6-二[N-(1'-羟乙基)甲酰胺]、吡啶-2,6-二[N-(2'-羟丙基)甲酰胺]、吡啶-2,6-二[N-(1',1'-二甲基-2'-羟基)甲酰胺]的镉(Ⅱ)配合物,通过元素分析方法确定配合物的组成,比较分析配位前后游离配体与配合物的红外和紫外吸收光谱,推测了配合物的可能结构,并采用紫外光谱滴定法对配体与Cd(Ⅱ)离子在溶液中的配位行为进行了模拟研究。结果显示3种镉(Ⅱ)配合物的配位模式相同,均为1∶1 ML型,配体中两个酰胺键N原子和吡啶环N原子作为配位原子参与金属离子Cd(Ⅱ)配位成键。
Three pyridine-2,6-diamides molecules of pyridine-2,6-bis [N-（1 ＇-hydroxyethyl）carbamoyl],pyridine-2,6-bis[N-（2＇-hydroxypropyl）carbamoyl],pyridine-2,6-bis[N-（1＇,1＇-dimethyl-2＇-hydroxy） carbamoyl] and their cadmium（Ⅱ） complexes had been synthesized and characterized by using FT-IR,UV and elemental analysis,and the complex formulae were determined.The possible structures of complexes were concluded by comparison with the IR＆UV spectral properties of the free ligand and their cadmium （Ⅱ） complex.Additionally,the aggregation behavior of cadmium salts and pyridine-2,6-diamides molecules in solutions were also investigated with UV spectra.The results show that in three cadmium （Ⅱ） complexes,the coordination modes of their ligands are similar,and coordinating through two nitrogen atoms of amide and one nitrogen atom of aromatic pyridine-ring,all of them display apparently 1∶ 1 （M/L） binding.
出处
《贵州师范大学学报（自然科学版）》
CAS
2014年第4期69-73,共5页
Journal of Guizhou Normal University：Natural Sciences
基金
教育部春晖计划合作科研项目(No.Z2011040)
