title: Synthesis, structure, and reactivity of zwitterionic divalent rare-earth metal silanides.
abstract: The synthesis and structures of the first zwitterionic divalent rare-earth metal silanides of the formula [Si(SiMe2OMe)3-κ(3)]2M (M-3), where M = Eu, Yb, and Sm, are reported. M-3 compounds feature spirocyclic bicyclooctane structures in which the central rare-earth metal ions are being octahedrally coordinated by six methoxy groups. The reaction of Yb-3 with BPh3 and W(CO)6 respectively generated the trinuclear zwitterions [Ph3BSi(SiMe2OMe)3-κ(3)]2Yb (Yb-4) and [(CO)5WSi(SiMe2OMe)3-κ(3)]2Yb (Yb-5) in good yield.
authors.affiliation: †Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States.
authors.forename: Vidura D
authors.initials: VD
authors.lastname: Thalangamaarachchige
authors.affiliation: †Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States.
authors.forename: Daniel K
authors.initials: DK
authors.lastname: Unruh
authors.affiliation: ‡School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife KY16 9ST, United Kingdom.
authors.forename: David B
authors.initials: DB
authors.lastname: Cordes
authors.affiliation: †Department of Chemistry and Biochemistry, Texas Tech University, Box 1061, Lubbock, Texas 79409-1061, United States.
authors.forename: Clemens
authors.initials: C
authors.lastname: Krempner