Kinetics of aquation of trans-dichlorobis(l,3-diaminopropane)cobalt(III) chloride in mixed aqueous solvents

Abstract

Kinetic data are reported for aquation of the salt trans-[Co(dap)₂Cl₂]Cl [dap = 1,3-diaminopropane (trimethylenediamine)] in a variety of mixed water–organic solvents. Plots of log k_H2O against Grunwald–Winstein Y values are linear with gradients of 0·36, 0·34, and 0·17 in methanol–, ethanol–, and acetone–water mixtures, respectively. The results are consistent with a dissociative mechanism.