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Abstract
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Some new Schiff bases derived from 2,3-
diaminopyridine and their new Co(III) complexes were
synthesized and characterized. The formation constants of
the Co(III) complexes vary according to the following
trend: 5-MeO[5-H[5-Br and 5-MeO[3-MeO[
4-MeO. For a given donor, the order of formation constants
according to the axial ligand is PBu3[PPh2Me. The
binding trend of the donors toward a given cobalt(III)
Schiff base complex is as follows: benzylamine[nbutylamine[
sec-butylamine[tert-butylamine; Im[2-
MeIm[2-EtIm[BzIm; and PBu3[PPh2Me.
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