Question

The logarithmic stepwise formation constants for the substitution of [Cu(OH2)6]2+ with ethylenediamine (en) to form the ions [Cu(en)(OH2)4]2+, [Cu(en)2(OH2)2]2+, [Cu(en)3]2+ are 10.5, .0, and -1.0 respectively.

a. Account for this drastic increase in successive formation using your knowledge of coordination complexes and their electronic structures. (Hint: draw a crystal field splitting diagram to justify your answer).

Answer 1