钴(Ⅱ)-联吡啶-α-氨基酸的热力学和动力学研究

• 作 者: 夏海涛 林华宽 陈荣悌
• 机 构: 南开大学化学系!天津，300071,南开大学化学系!天津，300071,南开大学化学系!天津，300071
• 出 处: 物理化学学报
• 发表日期: 1995年01期
• 关键词: 联吡啶 α-氨基酸 反应速率 α－氨基酸 钴（Ⅱ） 三元体系 三元配合物 电子云密度 动力学曲线 质子化常数

Thermodynamic property of the title complex compounds was studide by pH method. The stability constans of binary and ternary complexes of cobalt(Ⅱ )-bipyridylα-amionoacids were determined at 25.0±0.1 ℃ in the presence of 0.1mol·dm-3 KNO3. The relationships between stability of complexes and strength of d-p back-donation bonding formed for cobalt(Ⅱ )-bipyridyl were discussed. The kinetic property of ternary system was studied by temperature-jump technique. The formation rate constants of ternary complexes were determined. The results show that thermodynamic stability and reaction rate related to the strength of acid and base of ligends. It was found again that linear free energy relationships exist.

Thermodynamic property of the title complex compounds was studide by pH method. The stability constants of binary and ternary complexes of cobalt (II) -bipyridylα-amionoacids were determined at 25.0 ± 0.1 ° C in the presence of 0.1 mol · dm -3 KNO3. relationships between stability of complexes and strength of dp back-donation bonding formed for cobalt (II) -bipyridyl were discussed. The kinetic property of ternary system was studied by temperature-jump technique. The formation rate constants of ternary complexes were determined. The results show that thermodynamic stability and reaction rate related to the strength of acid and base of ligends. It was found again that that linear free energy contacts exist.