| VO(Ⅱ)-脯氨酸-邻菲咯啉三元体系的溶液结构及其波谱 |
| The Solution Structures and Spectra of VO (Ⅱ) -Pro-Phen Ternary System |
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| 摘要: 本文测定了VOSO4与脯氨酸(Pro)、邻菲咯啉(Phen)在不同酸度(pH=1～14)的乙二醇/水(1:1)溶液中的低温(173K)EPR波谱,根据不同pH下的EPR谱变化,利用Johnson的加合规则,并结合配合物的红外光谱推测了它们的可能结构。利用波谱参数计算了配合物的键参数,利用电子光谱数据计算了配合物的晶体场参数,讨论了它们的成配特性。结果表明,随着取代水分子的配体(Phen或Pro)数目增加,键参数减小,配合物共价性增强,同时得出Phen与VO(Ⅱ)配位能力比Pro强得多 |
| 关键词: 脯氨酸-邻菲咯啉 VO(Ⅱ)配合物 结构 波谱 |
| 基金项目: 浙江省分析测试基金(No．99057) |
| Abstract: EPRspectra of VO (Ⅱ) -Pro-Phen system in glycol and water(1:1) solution at various acidities have been observed at low temperature (173K).It was found that in different pHranges different structural complexes were formed.According to Johnson's rule and IR, their possible structures were suggested.The bonding parameters of complexes were calculated by EPR parameters.It can be seen that the δ2 values of complexes decrease as the number of ligands bound to vanadium increases.This means that the covalent bonding between vanadium and ligands increase as Phen and Pro ligands replace water ligands.Using electronic spectral data, the crystal field parameters were calculated.The coordination law was discussed.It was obtained that the coordination capacity of Phen is much stronger than one of Pro. |
| Keywords: Pro-Phen VO (Ⅱ) complexes structure spectra |
| 投稿时间：1999-08-17 修订日期：1999-11-24 |
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| 陈德余,史卫良,张仕勇.VO(Ⅱ)-脯氨酸-邻菲咯啉三元体系的溶液结构及其波谱[J].无机化学学报,2000,16(3):450-454. |
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