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The formation constants of ternary mixed ligand complex compounds formed fromCu(Ⅱ)-2,2’-bipyridyl (bipy) with N-(para-substituted phenyl) glycines (pRPhG), Cu(Ⅱ)-1, 10-phenan-throline (phen) with N-(meta-substituted phenyl) glycines (mRPhG), Cu(Ⅱ)--bipy/phen with someα-aminoacids (αA) have been determined by pH method at 25℃ in the presence of 0.10 M NaClO_4.It was found that linear free energy relationships do exist between the stability of ternary complexcompounds and the base strengths of the ligands in all four ternary systems investigated. The stabi-lity of the ternary complex compounds was discussed in terms of ΔlogK_M and log X values. It wasfound again that linear relationships exist between Δ log K_M, log X and p K_2 in the Cu (Ⅱ)-phen-mRPhGternary system.
The formation constants of ternary mixed ligand complex compounds formed from Cu (II) -2,2’-bipyridyl (bipy) with N- (para-substituted phenyl) glycines (pRPhG) (phen) with N- (meta-substituted phenyl) glycines (mRPhG), Cu (Ⅱ) -bipy / phen with some α-aminoacids (αA) have been determined by pH method at 25 ℃ in the presence of 0.10 M NaClO_4. It was found that linear free energy relationships do exist between the stability of ternary complex compounds and the base strengths of the ligands in all four ternary systems investigated. The stabi-lity of the ternary complex compounds was discussed in terms of ΔlogK_M and log X values. It wasfound again that linear relationships exist between Δ log K_M, log X and p K_2 in the Cu (II) -phen-mRPhGternary system.