213599-08-7Relevant academic research and scientific papers
N-substituted guanidinate anions as ancillary ligands in organolanthanide chemistry. Synthesis and characterization of {CyNC[N(SiMe3)2]NCy}2SmCH(SiMe 3)2
Zhou, Yuanlin,Yap, Glenn P. A.,Richeson, Darrin S.
, p. 4387 - 4391 (2008/10/08)
Addition of N(SiMe3)2 anion equivalents to CyN=C=NCy provided entry to a series of N-substituted guanidinate complexes of Sm(III) and Yb(III) with the general formula M{CyNC[N(SiMe3)2]NCy}2(μ-Cl) 2Li(S)2 (M = Sm, Yb; Cy = cyclohexyl; S = Et2O, 1/2 TMEDA). Substitution of the chloro ligands of these complexes using LiCH(SiMe3)2 or LiN(SiMe3)2 yields solvent-free, monomeric alkyl and amido compounds, respectively. Definitive evidence for the molecular structures of these products is provided through single-crystal X-ray analysis, and in particular, the results for Sm{CyNC[N(SiMe3)2]NCy}2CH(SiMe 3)2 (7) and Yb{CyNC[N(SiMe3)2]NCy}2N(SiMe3) 2 (8) are presented. These results provide the first reported example of an organolanthanide complex supported by a guanidinate ligand.
