| 镍, 锌, 钴(II)-N-(间甲苯基)亚氨基二乙酸-氮三乙酸的量热研究 |
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| 引用本文： | 周志芬,林华宽,朱守荣,卢祥生,陈荣悌. 镍, 锌, 钴(II)-N-(间甲苯基)亚氨基二乙酸-氮三乙酸的量热研究[J]. 化学学报, 1997, 55(11): 1066-1071 |
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| 作者姓名： | 周志芬 林华宽 朱守荣 卢祥生 陈荣悌 |
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| 作者单位： | 南开大学化学系 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 使用改进的RD-1型热导式量热计测量了镍(II), 锌(II),钴(II)-N-(间甲苯基)亚氨基二乙酸-氮三乙酸三元配合物的生成焓, 发现其大小按金属离子来说符合Irving-William序列。利用配体的多环水化结构等讨论了该三元配合物的生成焓和相应的二元配合物的生成焓, 同时求得了上述三元体系的热力学参数, 指出上述三元体系的生成熵是导致这些三元体系具有较大稳定性的根本原因。
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| 关 键 词： | 锌络合物 三元络合物 氢键 钴络合物 镍络合物 甲苯P 亚胺二乙酸P |
Calorimetric study of Ni(II), Zn(II), Co(II)-N-(meta-substituted phenyl) iminodiacetic acid-nitrilotriacetic acid ternary systems |
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| ZHOU ZHIFEN,LIN HUAKUAN,ZHU SHOURONG,LU XIANGSHENG,CHEN RONGTI. Calorimetric study of Ni(II), Zn(II), Co(II)-N-(meta-substituted phenyl) iminodiacetic acid-nitrilotriacetic acid ternary systems[J]. Acta Chimica Sinica, 1997, 55(11): 1066-1071 |
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| Authors: | ZHOU ZHIFEN LIN HUAKUAN ZHU SHOURONG LU XIANGSHENG CHEN RONGTI |
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| Abstract: | The protonation heats of N-(meta-substituted phenyl) iminodiacetic acid (m-CH3PhIDA), the heats of formation of Ni(II), Zn(II), Co(II)-m-CH3PhIDA binary systems and Ni(II), Zn(II), Co(II)-m-CH3PhIDA-nitrilotriacetic acid (NTA) ternary systems have been determined in aqueous solution at 25.0±0.2℃, I=0.1 mol.dm^-^3(NaClO4) by means of a model RD-1 automatic conduction calorimeter. To compare the formation heats for metal ions, we found that they obey Irving-Williams order, i.e. Co(II)Zn(II). A supposed structure of the hydrated ligand has been offered to discuss the formation heats of ternary complexes M(II)-m-CH3PhIDA-NTA and of binary complexes M(II)-m-CH3PhIDA. |
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| Keywords: | ZINC COMPLEX TERNARY COMPLEX HYDROGEN BONDS COBALT COMPLEX NICKEL COMPLEX METHYLBENZENE P IMIDO-ACETIC ACID P |
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