The speciation in aqueous solution at 25 °C using 1.0 mol·dm⁻³ KNO₃ as the ionic medium, was studied on the ternary copper(II) complexes formed with 1,10'-Phenanthroline (Phen) and the amino acids: Glycine (HGly, HL), α-Alanine (HαAla, HL), β-Alanine (HβAla, HL), Proline (HPro, HL), Serine (HSer, HL), Threonine (HThr, HL), Methionine (HMet HL) and Phenylalanine (HPhe, HL). The potentiometric data were analyzed with the program LETAGROP. The stability of the ternary complexes compared to the binary ones were evaluated in terms of ∆log K and % R.S. To analyze the potential structures present in the solution, we examined the absorption and circular dichroism (CD) spectra. Our analysis indicated the existence of ternary complexes, most of which exhibited square pyramid geometry for most of the amino acids. Nevertheless, the circular dichroism investigations suggested that these ternary complexes were unstable, potentially due to the presence of inversion bands.

^{以1.0 mol·dm -3} KNO ₃作为离子介质，研究了1,10'-菲咯啉（Phen）与氨基酸：甘氨酸形成的三元铜（II）配合物在25 °C水溶液中的形态形成。(HGly, HL)、α-丙氨酸 (HαAla, HL)、β-丙氨酸 (HβAla, HL)、脯氨酸 (HPro, HL)、丝氨酸 (HSer, HL)、苏氨酸 (HThr, HL)、蛋氨酸 (HMet HL)和苯丙氨酸（HPhe、HL）。使用 LETAGROP 程序分析电位数据。与二元复合物相比，三元复合物的稳定性根据 Δlog K 和 % RS 进行评估。为了分析溶液中存在的潜在结构，我们检查了吸收光谱和圆二色性 (CD) 光谱。我们的分析表明存在三元复合物，其中大多数氨基酸呈现方金字塔几何形状。然而，圆二色性研究表明这些三元配合物不稳定，可能是由于反演带的存在。