Crystal structures of two ytterbium(III) complexes comprising alkynylamidinate ligands

Two ytterbium(III) complexes comprising alkynylamidinate ligands, namely bis-(η -cyclo-penta-dien-yl)(3-cyclo-propyl- , '-diiso-propyl-propynamidinato-κ , ')ytterbium(III), [Yb(C H ) (C H N )] or Cp Yb[( Pr N) C-C≡C- -C H ] ( ) and tris-(3-phenyl- , '-di-cyclo-hexyl-propynamidinato-κ , ')ytterbium(III), [Yb(C H N ) ] or Yb[(CyN) C-C≡C-Ph] (Cy = cyclo-hex-yl) ( ) have been synthesized and structurally characterized. Both complexes are monomers; for complex , the contribution to the scattering from highly disordered toluene solvent molecules in these voids was removed with the SQUEEZE routine [Spek (2015). C , 9-18] in . The stated crystal data for , μ . do not take these into account.