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Item Kinetics and Thermodynamics of the Formation of the Monoglycinate Complexes of Cobalt(II), Nickel(II)5 Copper(II) and Zinc(II) in Water, at Pressures from 1 bar to 3 kbar(Journal of the Chemical Society : Faraday Transaction - I. The Chemical Society, London. 1973, 69 (3), 1973) Grant, M. W.The volumes of activation for the formation of the monoglycinate complexes of nickel (ll) cobalt(II), copper (H) and zinc(II) are found to be 8±2, 10± 1, 12± 1 and 7± 1 cm3 mol-1, respectively. After allowance has been made for the volume change accompanying outer-sphere complex formation, these values are similar to those found for the reactions of nickel(II) and cobalt(II) with ammonia and pyridine-2-azodimcthylaniline, and are likewise interpreted, in terms of the Eigen mechanism for ligand substitution, as resulting from the stretching of a metal-water bond.