The reactivity of lanthanide alkyl compounds with phenylacetylene: Synthesis and structure of [(ButCp)2LnC≡CPh]2 (Ln = Nd, Gd)

Article abstract of DOI:10.1016/0277-5387(95)00485-8

[(Bu^tCp)₂LnCH₃]₂ (Ln = Nd, Gd) react with PhC≡CH to form the dimeric alkynide-bridged complexes [(Bu^tCp)₂LnC≡CPh]₂ [Ln = Nd (I), Gd (II)]. Both compounds crystallized from toluene in the monoclinic space group C2/c. The two complexes are homologous, composed of asymmetric metal-alkynide bridges with Nd - C, Gd - C (alkynide) bond lengths of 2.602(4), 2.641(5) (1) and 2.532(6), 2.601(7) A (II), respectively. The average Nd - C (ring) and Gd - C (ring) distances are 2.746(13) and 2.703(19) A. * Author to whom correspondence should be addressed.