摘要
我们研究了２，９，１６，２３－四羧基酞菁钴（Ⅱ）与硫醇（２－巯基乙醇）、硫酚（苯硫酚）轴向配位反应的热力学性质，发现了配位过程中中心离子钴由二价变为一价的现象。用紫外－可见分光光度法和Ｍｉｌｌｅｒ－Ｄｏｒｏｕｇｈ 数据处理方法，确定了体系的配位数和平衡常数；利用温度系数法求得了体系的ΔｒＨｍ ， ΔｒＳｍ 。
the thermodynamics of axial coordination reaction of Co(Ⅱ) 2,9,16,23 tetracaboxyph thalocyanine with 2 mercaptoethanol in aqueous and with thiophenol in DMSO were studied. It was found that the centre metal ion Co(Ⅱ) was reduced to Co(Ⅰ). Coordination number and equilibrium constants of axial coordination reaction were measured by visible spectra techniques and the method of Miller Dorough. The changes of standard molar enthalpies Δ r H m and standard molar entropies Δ r S m of reaction were obtained from the plots of ln K a vs 1/ T . The influence of temperature was discussed.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
1999年第6期732-738,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金
天津市自然科学基金
关键词
轴向配位反应
配位反应
四羧基酞菁钴
Co(Ⅱ) phthalocyanine thiol axial coordination reaction thermodynamic
