title: An unusual example of a linearly coordinated acetone ligand in a six-coordinate iron(II) complex.
abstract: The title compound, acetonediaqua[2,6-bis(3-tert-butylpyrazol-1-yl)pyridine]iron(II) bis(tetrafluoroborate) acetone disolvate, [Fe(C19H25N5)(C3H6O)(H2O)2](BF4)(2).2C3H6O, contains a C2-symmetric six-coordinate complex dication, with an acetone ligand in its equatorial plane that is linearly coordinated by symmetry (Fe-O=CMe2=180 degrees). This is a consequence of close steric contacts between the coordinated carbonyl group and the two distal tert-butyl substituents on the tridentate ligand.
authors.affiliation: School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, England.
authors.forename: Colin A
authors.initials: CA
authors.lastname: Kilner
authors.forename: Malcolm A
authors.initials: MA
authors.lastname: Halcrow