title: M-F interactions and heterobimetallics: furthering the understanding of heterobimetallic stabilization.
abstract: Heterobimetallic complexes containing alkali, alkaline-earth, and divalent europium metals utilizing the perfluoro-tert-butoxide (PFTB) ligand following the general formula, [AM(PFTB)3(co-ligand)x] (A=Na, K; M=Mg, Sr, Ba, Eu; co-ligand=THF, toluene), have been isolated. These compounds sublime at low temperatures with low residual weight indicating their potential as metal-organic chemical-vapor deposition (MOCVD) precursors. The complexes have unique molecular architectures that are strongly influenced by M-F interactions, as was verified in the solid state by using X-ray crystallography. The significance of these interactions were further reinforced by bond-valence sums analysis and (19) F VT-NMR spectroscopy, in which rotational energies of 18.75 and 19.08 kcal mol(-1) were measured.
authors.affiliation: Department of Chemistry, 1-014 Center for Science and Technology, Syracuse University, Syracuse, NY 13244-4100, USA.
authors.forename: William D
authors.initials: WD
authors.lastname: Buchanan
authors.forename: Karin
authors.initials: K
authors.lastname: Ruhlandt-Senge
keywords: alkali metals; europium; fluorinated ligands; s-block metals; volatile organometallics