title: Synthetic and structural studies of cobalt-pivalate complexes.
abstract: The synthesis and characterisation of a range of cobalt pivalate cage complexes are reported. The cages include: a dinuclear Co(II) complex; an oxo-centred Co(III) triangle; tetranuclear Co(II) heterocubanes and butterflies; tetranuclear heterovalent cobalt butterflies and hexanuclear edge-sharing bitetrahedra; heterovalent penta-, hexa- and hepta-nuclear cages based on [M(4)O(4)] heterocubane cores; and a tetradecanuclear cage based on heterocubanes sharing edges and vertices. Spectroscopic studies suggest that some of these cores are retained in solution, but that only in the Co(III) triangle is the structure including ligands retained. A scheme is proposed to account for the many structures observed, which may be applicable to other polymetallic cage complexes.
authors.affiliation: Department of Chemistry, The University of Manchester, Oxford Road, Manchester, M13 9PL, UK.
authors.forename: Guillem
authors.initials: G
authors.lastname: Aromí
authors.forename: Andrei S
authors.initials: AS
authors.lastname: Batsanov
authors.forename: Paul
authors.initials: P
authors.lastname: Christian
authors.forename: Madeleine
authors.initials: M
authors.lastname: Helliwell
authors.forename: Andrew
authors.initials: A
authors.lastname: Parkin
authors.forename: Simon
authors.initials: S
authors.lastname: Parsons
authors.forename: Andrew A
authors.initials: AA
authors.lastname: Smith
authors.forename: Grigore A
authors.initials: GA
authors.lastname: Timco
authors.forename: Richard E P
authors.initials: RE
authors.lastname: Winpenny