Equilibria in complexes ofN-Heterocyclic molecules, part XXIII. Reaction of hydroxide ion with bis-[2,4,6-tri-(2-pyridyl)-1,3,5-triazine] cobalt(II) and nickel(II)

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The reactions of [Ni(TPT)2]2+ and [Co(TPT)2]2+ with aqueous hydroxide ion involve the formation of pseudo-base species prior to the dissociation of a ligand molecule. The [M(TPT)(H2O)3]2+ or [M(TPT)(OH)3]− species thus formed react further with hydroxide ion to yield compounds previously described. The kinetics of pseudo-base formation have been followed in each case and the results are compared with a number of other reactions of analogous compounds with hydroxide ion and with water.