title: Coordination chemistry of P, O-bidentate phosphinophenolates with Ga3+ and In3+.
abstract: Novel complexes of Ga3+ and In3+ were synthesized with two hetero donor phosphinophenolate ligands (PO-, ortho-phenoxydiphenylphosphine; MePO-, 5-methyl-2-phenoxydiphenylphosphine). RPO-(R=H, Me) binds in a bidentate fashion through both the hard O and the soft P donor atoms to In3+, whereas, it only binds Ga3+ through the O donor. Electrochemical synthesis proved to be a practical synthetic approach to In2(PO)3Cl3, In(PO)3 and In(MePO)3. [In(MePO)(H2O)Cl2]2 and Ga(HPO)Cl3 were synthesized from MCl3(M=In and Ga, respectively). Both dimetallic indium complexes, [In(MePO)(H2O)Cl2]2 and In2(PO)3Cl3, incorporate phenolate oxygen atoms bridging the two metal ions. Each pair of In atoms are in a distorted octahedral geometry in each complex, with the former complex having a coordination sphere of PO3Cl2 for both indium metal ions and the latter showing a coordination sphere of PO3Cl2 for one indium and P2O3Cl for the other. Ga(HPO)Cl3 is a zwitterionic complex, with Ga having a OCl3 coordination core. All these complexes were fully characterized by a variety of techniques including X-ray crystallography.
authors.affiliation: Medicinal Inorganic Chemistry Group, Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia V6T 1Z1, Canada.
authors.forename: Katayoun
authors.initials: K
authors.lastname: Saatchi
authors.forename: Brian O
authors.initials: BO
authors.lastname: Patrick
authors.forename: Chris
authors.initials: C
authors.lastname: Orvig