邻羟基苄基氨乙酸及其配合物的研究(Ⅳ)—Cu(Ⅱ)配合物的一些平衡常数及酸式配合物的性质

高等学校化学学报 ›› 1986, Vol. 7 ›› Issue (6): 487.

邻羟基苄基氨乙酸及其配合物的研究(Ⅳ)—Cu(Ⅱ)配合物的一些平衡常数及酸式配合物的性质

张华麟, 章惠农, 周梅生

复旦大学化学系

收稿日期:1985-01-30 出版日期:1986-06-24 发布日期:1986-06-24

Studies on N-o-Hydroxybenzylglycine and Its Metal Complexes (Ⅳ)—The Equilibrium Constants of Copper(Ⅱ) Complexes and Properties of Cu(H₂L) Solid Complex

Zhang Hualin, Zhang Huinong, Zhou Meisheng

Department of Chemistry, Fudan Univeisity, Shanghai

Received:1985-01-30 Online:1986-06-24 Published:1986-06-24

摘要/Abstract

摘要： 合成了邻羟基苄基氨乙酸与Cu(Ⅱ的酸式配合物固体,研究了它的溶解度、摩尔电导、磁性、红外光谱以及热谱,确定了配合物的配位方式。用pH滴定法测得配合物的生成常数、酸解离常数,并讨论了各种配合物的不同配位形式。

Abstract: The solid complex of N-(o-hydroxybenzyl)-glycine (HBG) with copper ( Ⅱ )-Ctt(HL)₂ was prepared under acidic conditions and characterized by solubility, molar conductance, magnetic moment, infrared spectra and thermogravimetric studies. The results indicate that two amino nitrogen atoms and two carboxylic oxygen atoms in HBGare coordinated in the complex. The formation constants of Cu( Ⅱ )-HBGcomplexes (K^Cu_HLCu, K^Cu_Cu(HL)2,β^Cu_CuL(HL) , β^Cu_Cu(HL)2 , K^Cu_CuL , β^Cu_CuL2), the proton dissociation constants of Cu(HL)₂ (K^H_CuL(HL)x, K^H_CuL(HL)) and the hydrolysis constant of CuL(H₂O)(K^H_CuL(H₂O)) in aqueous solutions were determined pH-metrically at 30.0 ± 0.1 ℃ in the presence of 0.10M KNO₃. The variant coordination forms of HBGin the complexes is discussed.

TrendMD:

张华麟, 章惠农, 周梅生. 邻羟基苄基氨乙酸及其配合物的研究(Ⅳ)—Cu(Ⅱ)配合物的一些平衡常数及酸式配合物的性质. 高等学校化学学报, 1986, 7(6): 487.

Zhang Hualin, Zhang Huinong, Zhou Meisheng . Studies on N-o-Hydroxybenzylglycine and Its Metal Complexes (Ⅳ)—The Equilibrium Constants of Copper(Ⅱ) Complexes and Properties of Cu(H₂L) Solid Complex. Chem. J. Chinese Universities, 1986, 7(6): 487.