| 介质对配合物稳定性的影响——Ⅱ.Cu(SCN)+—NaNO3—二氧六环—水体系 |
| INFLUENCE OF MEDIUM ON STABILITY OF COORDINATION COMPOUNDS Ⅱ. SYSTEM OF Cu(SCN)+ -NaN03-DIOXANE-H2O |
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| 摘要: 本文用分光光度法确定了25℃时配阳离子Cu(SCN)+在NaNO3—二氧六环—H2O介质中的稳定常数.溶剂组成变化范围为0,5,10,15和20wt%二氧六环,离子强度范围为0.2～3.0moledm-3,溶液的pH=1.5～1.6.本文提出了基于Pitzer方程式的最小二乘多项式逼近法,确定出各种不同组成混合溶剂中配合物的热力学稳定常数.讨论了该常数和一级介质效应与溶剂组成和介电常数的关系. |
| 关键词: 配合物 稳定常数 Pitzer方程 介质效应 |
| 基金项目: |
| Abstract: The stability constants of Cu(SCN)+ ion in the Cu(SCN)+-NaNO3-dioxane-H2O system have been determined by spectrophotometric measurements at 25℃ for 0, 5, 10, 15 and 20 wt% for dioxane in mixed solvents. The total ionic strengths of the solution are 0.2~3.0 mole dm-3, and pH=1.5~1.6 on the basis of Pitzer's theory, a method of determining thermodynamic stability constants of coordination compounds in mixed solvents by polynomial approximation has been proposed. Finally, the stability constants of Cu(SCN)+ ion in mixed solvents were correlated with composition or dielectric constants of mixed solvents. |
| Keywords: coordination compound stability constant Pitzer's equation medium effect |
| 投稿时间：1986-01-16 |
| 摘要点击次数: 1611 |
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| 梁春余,杨家振,刘祁涛,程志华.介质对配合物稳定性的影响——Ⅱ.Cu(SCN)+—NaNO3—二氧六环—水体系[J].无机化学学报,1987,3(2):24-33. |
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