title: Structural variations in metal complexes of a tertiary α-hydroxyoxime.
abstract: Despite the long term interest in hydroxyoximes as metal ion extractants, there is a lack of information on the possible coordination modes these ligands can assume, particularly in concert with a co-ligand. This is pertinent to the use of these extractants in synergistic systems, where a combination of extractants can achieve commercially useful results. We report here the structures of some metal complexes (M = Mn, Co, Ni, Cu, and Zn) with (1-hydroxycyclohexyl)-phenyl ketone oxime. The results demonstrate that this ligand can support complexes ranging from mononuclear to trinuclear, in association with anionic and neutral co-ligands in some cases. While these results have been obtained in the solid state, they illustrate a range of possible species that may be formed in extractant solutions.
authors.affiliation: Department of Chemistry, Curtin University, GPO Box U1987, Perth, Western Australia 6845, Australia. m.ogden@curtin.edu.au.
authors.forename: Daniel
authors.initials: D
authors.lastname: D'Alessio
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Lombardo
authors.forename: Jamila G
authors.initials: JG
authors.lastname: Vaughan
authors.forename: Brian W
authors.initials: BW
authors.lastname: Skelton
authors.forename: Keith R
authors.initials: KR
authors.lastname: Barnard
authors.forename: Mark I
authors.initials: MI
authors.lastname: Ogden