| 羟基-氧钼(Ⅴ)[5,10,15,20-四(4-磺酸基苯基)]卟啉配合物在溶液中的二聚平衡 |
| EQUILIBRIA OF Mo(V)O(OH)TPPS IN AQUEOUS SOLUTION |
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| 摘要: 在25±0.02℃、0.025mol·dm-3KCl介质及磷酸盐缓冲条件下,用光度滴定法研究了羟基-氧钼(V)[5,10,15,20-四(4-磺酸基苯基)]卟啉配合物在水溶液中的二聚平衡,用线性最小平方法确定了平衡模型,求得二聚反应平衡常数pKel=4.34±0.28,单体的摩尔吸收εm(447um)=1.27×104εm(475um)=2.01×104;二聚体的摩尔吸收εd(447nm)=3.17×104,εd(475nm)=1.40×104。 |
| 关键词: 溶液平衡 钼 卟啉 二聚反应 |
| 基金项目: 国家自然科学基金 |
| Abstract: Equilibria of oxohydroxo[5,10,15,20-tetrakis(4-sulfonatophenyl)] porphyrinatomolyb-denum(V) coordination compound [Mo(V)O(OH)TPPS] have been investigated in aqueous solution by spectrophotometric titration and least square error method. The Mo(V)O(OH)TPPS dimerizes to give rise to a unique species and an oxo-hydroxo-bridged dimeric species. The equilibrium constant of the dimerization was found to be pKel = 4.34±0.28 in 0.025mole·dm3KCl medium and at phosphate buffer and at 25 ± 0.02℃. The mole absorbance of monomer found to be εm(447nm) = 1.27 × 104, εm(475nm) = 2.01 × 104; The mole absorbance of dimer εd(447nm) = 3.17×104, εd(475nm) = 1.40 × 104. |
| Keywords: solution equilibria molybdenum porphyrim dimeric reaction |
| 投稿时间：1988-01-22 |
| 摘要点击次数: 1308 |
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| 罗仁生,任建国,秦子斌.羟基-氧钼(Ⅴ)[5,10,15,20-四(4-磺酸基苯基)]卟啉配合物在溶液中的二聚平衡[J].无机化学学报,1990,6(2):210-214. |
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