Abstract
The stability constant of the Cu2+‐2,2′‐bipyridyl‐glycine complex (log K = 7,88) was measured and compared with that of the binary Cu2+‐glycine complex (log K = 8,27). The value Δ log K = −0,4 (cf. equation (3)) is in the order which should be expected for the coordination of a mixed ON‐ligand to (Cu‐Bipy)2+ which results in the formation of a ternary complex (cf. [1]).