title: Phosphonate ligands encourage a platonic relationship between cobalt(II) and alkali metal ions.
abstract: Two new cobalt(ii) cages are reported where the metal core has a high symmetry related to a Platonic solid; the choice of alkali metal used in the base used for deprotonation appears to influence the resulting structures.
authors.affiliation: Department of Chemistry, The University of Manchester, Oxford Road, Manchester, UKM13 9PL. richard.winpenny@man.ac.uk
authors.forename: Stuart
authors.initials: S
authors.lastname: Langley
authors.forename: Madeleine
authors.initials: M
authors.lastname: Helliwell
authors.forename: James
authors.initials: J
authors.lastname: Raftery
authors.forename: Evangelos I
authors.initials: EI
authors.lastname: Tolis
authors.forename: Richard E P
authors.initials: RE
authors.lastname: Winpenny