四磺酸基酞菁钴与硫化物的轴向配位反应研究  

Study on the Reaction between Cobalt Tetrasulphonated Phthalocyanine and Sodium Sulfide

作　　者：刘巍[1] 叶涛[1] 郭荣[1] 

机构地区：[1]扬州大学化学化工学院,江苏扬州225002

出　　处：《光谱学与光谱分析》2004年第6期762-767,共6页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金 (2 97331 1 0 )资助项目

摘　　要：文章提出了一种多波长、双系数解析配合物吸收光谱测定配合物组成和稳定常数的方法 ,并用分光光度法对四磺酸基酞菁钴 (CoTsPc)与硫化物的轴向配位反应进行了研究 ,发现该反应与介质 pH值有关。pH =7 0时 ,Co(Ⅱ )TsPc与HS- 反应生成五配位的轴向配合物Co(Ⅱ )TsPc(HS) ,研究了Co(Ⅱ )TsPc与HS- 反应生成Co(Ⅱ )TsPc(HS)的反应热力学 ,计算了不同温度下的反应平衡常数、ΔH 和ΔS ;pH =13时 ,两者发生氧化还原反应 ,生成SCo(Ⅰ )TsPc。A new method which uses multi-wave number and double-parameter to analyse the UV-Vis. spectra is proposed to determine the composition and stabilization constants of coordination compounds. With this method, the reaction of cobalt tetrasulphonated phthalcyanine[CoTsPc] and sodium sulf ide [Na2S] was studied. The result shows that pH of the medium has great effect on the reaction. A five coordinated compound Co(II)TsPc(HS) was formed at pH = 7.0. The equilibrium constants and thermodynamics are reported for the reaction Under that condition. At higher pH, a redox-reaction took place and a five coordinated compound with the oxidation number I for cobalt [SCo(I)TsPc] was found.

关 键 词：四磺酸基酞菁 钴配合物 硫化物 轴向配位反应 分光光度法 反应平衡常数 温度 热力学 

分 类 号：O614.812[理学—无机化学] O641.4[理学—化学]