摘要
由乙二胺四乙酸二酐和多缩乙二醇出发,合成了一系列具有N-支套索冠醚结构的二异羟肟酸配体(L1H2~L4H2)及其钴(II)配合物(Co L1~Co L4),以IR,1H NMR,MS和元素分析进行结构表征。测定在不同温度下Co L1~Co L4的氧加合常数In KO2和热力学参数ΔH0、ΔS0,研究了氮杂冠醚环的大小对配合物氧加合性能的影响。
The dihydroxamic acid functionalized N-pivot lariat ether(L1H2~ L4H2) and their cobalt(II)complexes(Co L1~ Co L4) were synthesized starting from EDTA dianhydride and polyethylene glycol. Their structures were characterized by IR,1H NMR MS and elemental analysis. The equilibrium constants In KO2 and thermodynamic parameters(ΔH0,ΔS0) for oxygen of Co L1~ Co L4 were measured. The modulation of O2-binding capabilities by the size of the aza-crown ring of the ligand was discussed.
出处
《化学通报》
CAS
CSCD
北大核心
2015年第5期460-463,453,共5页
Chemistry
基金
重庆市教委项目(KJ1400632)资助
关键词
氮杂冠醚
异羟肟酸
钴(II)配合物
合成
氧加合
Aza-cown ether,Hydroxamic acid,Cobalt(II) complexes,Synthesis,Dioxygen affinities
