| 四(2─咪唑基)卟啉在水溶液中的性质及其在乙酸中与Co(Ⅱ)(OAc)2的反应动力学研究 |
| PROPERTIES OF TETRAKIS-(2-IMIDAZOYL)PORPHYRIN IN AQUEOUS SOLUTION AND STUDIES ON THE KINETICS OF REACTION WITH CO(Ⅱ)(OAc)2 |
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| 摘要: 合成了水溶性四(2─咪唑基)卟啉(H2TImP),研究了它在水溶液中的聚合性质.实验发现H2TImP水溶液在PH=0,6时遵守Beer定律,并呈单体形式存在.用光谱滴定法测定了H2TlmP加质于的平衡常数.用紫外可见分光光度计研究了在乙酸溶剂中H2TImP与Co(Ⅱ)(OAc)2反应的动力学.提出与实验结果相吻合的反应机理,并求得预平衡步的K, 以及速控步的K,讨论了溶剂化对标准摩尔熵及活化熵的影响. |
| 关键词: 四(2─咪唑基)卟啉 聚合性质 平衡常数 四(2─咪唑基)卟啉钴(Ⅱ) 反应机理 |
| 基金项目: 国家自然科学基金 |
| Abstract: The water-soluble tetrakis-(2-imidazoyl)-porphy was synthesised and its polymerization propertics in aqueous solution was investigated.It was found that H2TImP obeyed Beer's law at pH=0, 6, and remained monomerie.The equilibrium constant for the addition of the protons to the free base form of H2TImP was determined by spcctrophotomctric titration. The kinetics of the reaction of H2TImP with Co(Ⅱ)(OAc)2 in acetic acid was studied by means of Shimadzu UV-240 spectrophotomctcr.A mechanism in consistent with experimental results has been proposed. |
| Keywords: tetrakis-(2-imidazoyl)porphyrin polymerization property equilibrium constant tetrakis(2-imidazoyl)-porphinatocobult(Ⅱ) reaction mechanism |
| 投稿时间：1994-09-13 |
| 摘要点击次数: 1281 |
| 全文下载次数: 1219 |
| 王景桃,朱志昂,卜显和,陈荣悌.四(2─咪唑基)卟啉在水溶液中的性质及其在乙酸中与Co(Ⅱ)(OAc)2的反应动力学研究[J].无机化学学报,1995,11(3):256-261. |
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