title: Bis(1-ferrocenylbutane-1,3-dionato-kappa2O,O')copper(II) and bis(1,3-diferrocenylpropane-1,3-dionato-kappa2O,O')copper(II).
abstract: The title compounds, [CuFe2(C5H5)2(C9H8O2)2], (I), and [CuFe4(C5H5)4(C13H9O2)2], (II), are four-coordinate square-planar copper(II) complexes with two bidentate 1-ferrocenylbutane-1,3-dionate or 1,3-diferrocenylpropane-1,3-dionate ligands, respectively. The copper ion in (I) lies on an inversion centre, with one-half of the molecule in the asymmetric unit, while in (II), there are two independent half molecules in the asymmetric unit, with the copper ions also situated on inversion centres. The ferrocene substituents in (I) are in an anti arrangement. The molecules assemble in the crystal structure in layers with ferrocene groups at the surface. The pairs of ferrocene substituents on each ligand in complex (II) are syn and these adopt an anti arrangement with respect to the pair on the other diketonate ligand. As found in (I), complexes assemble in a layered structure with ferrocene-coated surfaces.
authors.affiliation: Department of Chemistry, The University of Auckland, Private Bag 92019, Auckland, New Zealand. pdw.boyd@auckland.ac.nz
authors.forename: Peter D W
authors.initials: PD
authors.lastname: Boyd
authors.forename: Paul M
authors.initials: PM
authors.lastname: Johns
authors.forename: Clifton E F
authors.initials: CE
authors.lastname: Rickard