物理化学学报 >> 1990, Vol. 6 >> Issue (04): 495-498.doi: 10.3866/PKU.WHXB19900420

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配合物稳定性与配体酸碱强度之间的直线自由能关系 XIII. N-(间位取代苯基)氨基乙酸,邻菲啰啉(α,'α-联吡啶)与镍(II),钴(II)和锌(II)生成三元配合物的稳定性研究

刘树祥; 林华宽; 陈荣悌   

  1. 南开大学化学系
  • 收稿日期:1989-01-28 修回日期:1989-08-07 发布日期:1990-08-15
  • 通讯作者: 林华宽

Linear Free Energy Relationships Between Stability of Complex Compounds and Strengths of Acid and Base of Ligands XIII. The stability of complex compounds formed from 1,10-phenanthroline(2,2'-bipyridyl), N-(metasubstituted phenyl) glycines with Nickel(II)

Liu Shu-Xiang; Lin Hua-Kuan; Chen Rong-Ti   

  1. Department of Chemistry, Nankai University, Tianjin
  • Received:1989-01-28 Revised:1989-08-07 Published:1990-08-15
  • Contact: Lin Hua-Kuan

Abstract: The formation constants of ternary mixed ligand complex compounds (logK_(MAB~(MA)) formed from 1,10-phenanthroline or 2,2'-bipyridyl (A), N-(meta-substituted phenyl) glycines, (B, m-RphG, R=CH_3, H, CH_3O, Cl) with Nickel(Ⅱ), Cobalt(Ⅱ) and Zinc(Ⅱ) were determined by pH method at 25 ℃ in 30% (Volume) ethanol solution in presence of 0.1 mol·dm~(-3) NaClO_4 or 0.1 mol·dm~(-3) KNO_3. It was found that linear free energy relationships exist between the stability of ternary complex compounds and the base strengths of ligands in all six ternary systems investigated. The stability of the ternary complex compounds was discused in terms of ΔlogK_M values and HSAB theory. It was found that linear relationships also exist between ΔlogK_M and pK_2 in the Ni(II)-phen-m-RPhG ternary system.