pH-Metric and spectroscopic (absorption and EPR) studies were made of the proton and copper(II) complexes of a series of ambidentate N-(phosphonomethyl)amino acids which contain both iminocarboxylate and iminophosphonate moieties. The stoichiometries and stability constants of the complexes formed were determined at 25°C and at an ionic strength of 0.20 mol dm–3(KCl). Stability data and spectroscopic
对一系列含有亚
氨基
羧酸盐和亚
氨基膦酸盐部分的N-(膦酰基甲基)
氨基酸的质子和
铜(II)配合物进行了pH计量和光谱(吸收和EPR)研究。在25°C和0.20 mol dm –3(KCl)的离子强度下测定形成的配合物的
化学计量和稳定性常数。稳定性数据和光谱测量结果表明,第一个
配体分子非常牢固地配位,形成了三齿等摩尔物质,而第二个
配体分子在轴向赤道模式下与
金属离子的结合效率大大降低。将结果与
羧酸类似物
亚氨基二乙酸和
次氮基三乙酸的结果进行了比较。