Synthesis and structure of novel dimethylcobalt(III) complexes containing trimethylphosphine and salicylaldiminato(N : O) ligands

Dimethyl(salicylaldiminato[N:O])cobalt complexes [CoMe2(2-O-(C6H1RRR3)-R-1-R-2-CH=NR4)L-2] (L=PMe3) (1 - 6) have been prepared through the reaction of.[CoMe3(PMe3)(3)] with the corresponding substituted salicylaldimine. The complexes were characterized with IR, H-1 NMR, C-13 NMR, P-31 NMR and elemental analyses. The X-ray crystal structure of complex I shows an octahedral coordination of cobalt, with two equatorial cis-methyl groups opposite to the planar N:O-chelate ring.