Abstract

The reactions of Ga(acac)(3) with salicylaldoxime (saoH(2)) and methyl-salicylaldoxime (Me-saoH(2)) in dichloromethane/hexane afforded the complexes [Ga(acac)(saoH)(2)] (1) and [Ga(acac)(3)][Ga(acac)(MesaoH)(2)] (2), respectively, in high yields. The crystal structures of I and 2 have been determined by single-crystal X-ray crystallography. Both complexes are mononuclear with the Ga(Ill) atoms being in octahedral environments surrounded by two bidentate chelate R-saoH(-) and one bidentate chelate acac(-) ligands. A [Ga(acac)(3)] moiety has co-crystallized along with the methylsalicylaldoximato complex. Characteristic IR as well as NMR data are discussed in terms of the nature of bonding in the structures of the two complexes. (1)H and (13)C NMR data in CDCl(3) indicate that the salicylaldoximato, complexes isomerize in solution. (C) 2009 Elsevier Ltd. All rights reserved.

Keywords

Crystal structure; Gallium(III) complexes; Mononuclear Ga(III) complexes; Oximato complexes; Six-coordinated Ga(III) complexes

Published in

Polyhedron
2009, volume: 28, number: 15, pages: 3291-3297
Publisher: Elsevier

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