title: Butyl-bis[μ-4-(2,4,6-trimethyl-phenyl-amino)pent-3-en-2-onato][4-(2,4,6-trimethyl-phenyl-amino)pent-3-en-2-onato]dimagnesium.
abstract: The structure of the title compound, [Mg(2)(C(4)H(9))(C(14)H(18)NO)(3)], contains two Mg atoms bridged by two μ(2)-O atoms from two of the three ketiminate ligands, while the third ketiminate is strictly chelating to one of the Mg atoms, which is thereby five-coordinate. In place of a chelating ligand, the second Mg atom is ligated by a single terminal n-butyl group and thus is four-coordinate. This is, so far, the only structurally characterized mixed magnesium ketiminate-alkyl cluster. The geometry at the first Mg atom is close to trigonal-bipyramidal with one chelating and one bridging O atom in the axial positions and two chelating N and one bridging O atom in the equatorial positions. The geometry at the second Mg atom is very distorted from tetra-hedral, with an O-Mg-C angle of 131.0 (1)°.
authors.affiliation: Department of Chemistry and Biochemistry, The University of Lethbridge, Lethbridge, AB, Canada T1K 3M4.
authors.forename: René T
authors.initials: RT
authors.lastname: Boeré
authors.forename: Twyla
authors.initials: T
authors.lastname: Gietz