Synthesis of crowned mono-and bis-Schiff bases and dioxygen affinities of their cobalt(II) complexes

被引：0

作者：

Li, JZ ^{[1
]}

Qin, SY ^{[1
]}

Li, ZH ^{[1
]}

Yang, H ^{[1
]}

机构：

[1] Sichuan Univ, Dept Chem, Chengdu 610064, Peoples R China

来源：

ACTA CHIMICA SINICA | 1999年 / 57卷 / 03期

关键词：

crown ether; Schiff base; cobalt(II) complex; synthesis; oxygenation;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Four crowned mono-and bis-Schiff bases, 4'-( 2-hydroxyphenylmethylideneimino) benzo-15-crown-5 ((LH)-H-1) and 4', 5'-bis( 2-hydroxyphenylmethylideneimino) benzo-15-crown-5 ((LH2)-H-4) as well as their substituted derivatives (LH)-H-2, (LH2)-H-5 were prepared from benzo-15-crown-5 via nitration, reduction, and condensation. Equilibrium constants and thermodynamic constants Delta H degrees, Delta S degrees for oxygenation of these crowned cobalt(II) Schiff bass compleses were measured. The influence of ligand structure and basicity of axial ligand on the affinities of the complexes for dioxygen was discussed in comparison with uncrowned analogues.

引用

页码：298 / 304

页数：7