title: Co-ordination behaviour of a novel bisthiourea tripodal ligand: structural, spectroscopic and electrochemical properties of a series of transition metal complexes.
abstract: The synthesis of a thiourea substituted derivative of tris(pyridyl-2-methyl)amine (TPA) is reported. Two of the three pyridine rings are substituted in the 6-position with benzoylthiourea groups. These thiourea groups undergo intramolecular hydrogen bonding to form six-membered rings which leaves one N-H group available to form hydrogen bonds with other molecules. This reports details how the complexation of this new ligand with transition metal ions yields complexes with differing geometries. Seven co-ordinate Mn(II) and Cd(II), six co-ordinate Ni(II) and five co-ordinate Co(II), Cu(II) and Zn(II) complexes have been isolated.
authors.affiliation: Cardiff University of Wales-Department of Chemistry, Main Building, Park Place, Cardiff, CF10 3AT, United Kingdom.
authors.forename: Fawaz A
authors.initials: FA
authors.lastname: Saad
authors.forename: Niklaas J
authors.initials: NJ
authors.lastname: Buurma
authors.forename: Angelo J
authors.initials: AJ
authors.lastname: Amoroso
authors.forename: James C
authors.initials: JC
authors.lastname: Knight
authors.forename: Benson M
authors.initials: BM
authors.lastname: Kariuki