title: Crystal structures of two ytterbium(III) complexes comprising alkynylamidinate ligands.
abstract: Two ytterbium(III) complexes comprising alkynylamidinate ligands, namely bis-(η5-cyclo-penta-dien-yl)(3-cyclo-propyl-N,N'-diiso-propyl-propynamidinato-κ2N,N')ytterbium(III), [Yb(C5H5)2(C12H19N2)] or Cp2Yb[(iPr2N)2C-C≡C-c-C3H5] (1) and tris-(3-phenyl-N,N'-di-cyclo-hexyl-propynamidinato-κ2N,N')ytterbium(III), [Yb(C21H27N2)3] or Yb[(CyN)2C-C≡C-Ph]3(Cy = cyclo-hex-yl) (2) have been synthesized and structurally characterized. Both complexes are monomers; for complex2, the contribution to the scattering from highly disordered toluene solvent molecules in these voids was removed with the SQUEEZE routine [Spek (2015).Acta Cryst.C71, 9-18] inPLATON. The stated crystal data forMr, μetc. do not take these into account.
authors.affiliation: Chemisches Institut der Otto-von-Guericke-Universitaet Magdeburg, Universitaetsplatz 2, 39106 Magdeburg, Germany.
authors.forename: Sida
authors.initials: S
authors.lastname: Wang
authors.affiliation: Organometallic and Organometalloid Chemistry Department, National Research, Centre, 12622 Cairo, Egypt.
authors.forename: Farid M
authors.initials: FM
authors.lastname: Sroor
authors.affiliation: Chemisches Institut der Otto-von-Guericke-Universitaet Magdeburg, Universitaetsplatz 2, 39106 Magdeburg, Germany.
authors.forename: Phil
authors.initials: P
authors.lastname: Liebing
authors.affiliation: Chemisches Institut der Otto-von-Guericke-Universitaet Magdeburg, Universitaetsplatz 2, 39106 Magdeburg, Germany.
authors.forename: Volker
authors.initials: V
authors.lastname: Lorenz
authors.affiliation: Chemisches Institut der Otto-von-Guericke-Universitaet Magdeburg, Universitaetsplatz 2, 39106 Magdeburg, Germany.
authors.forename: Liane
authors.initials: L
authors.lastname: Hilfert
authors.affiliation: Chemisches Institut der Otto-von-Guericke-Universitaet Magdeburg, Universitaetsplatz 2, 39106 Magdeburg, Germany.
authors.forename: Frank T
authors.initials: FT
authors.lastname: Edelmann
keywords: alkynylamidinate ligands; amidinates; crystal structure; cyclo­penta­dienyl complexes; ytterbium