SYNTHESIS, SPECTROSCOPIC AND STRUCTURAL STUDY OF TRIS[ETHYL-2-(HYDROXYIMINO) ACETOACETATO]COBALT(III)

Abstract

The preparation and characterization of the title complex, [CoL₃], is reported. The crystal structure determination shows that the three ligands each coordinate via the ketonic oxygen and oximic nitrogen atoms such that the overall configuration about the cobalt atom is fac. Crystals of [CoL₃] are monoclinic, space group P2₁/n with unit cell dimensions a = 14.234(6), b = 8.229(3), c = 19.654(8) Å, β = 96.99(4)°, V = 2285(1) ų, Z = 4. The structure was refined by a full-matrix least-squares procedure to R_w = 0.045 for 1936 observed reflections.

Key Words:

• cobalt(III)
• stereochemistry
• crystal structure