1287246-22-3Relevant academic research and scientific papers
Deprotonation of β-diketiminate in sterically demanding β-(diketiminato)-lanthanide complexes: Influence of lanthanide metals
Jiao, Rui,Xue, Mingqiang,Shen, Xiaodong,Zhang, Yong,Yao, Yingming,Shen, Qi
, p. 1448 - 1453 (2011/06/20)
Attempted synthesis of tris(β-diketiminato)lanthanide complexes [Ln(L2,6-Me2)3] (L2,6-Me2 = [{N(C 6H3Me2-2,6)C(Me)}2-CH]) resulted in ligand deprotonation, and different outcomes depending on the central metal used were observed. Reaction of YbCl3 with NaL2,6-Me2 (3 equiv.) afforded the fivemembered cyclometalated ytterbium β-diketiminate complex [Yb(L2,6-Me2)(L2,6-Me2)dep] (1). The same reaction with LnCl3 (Ln = Nd, Sm, and Er) gave the new complexes composed of one normal L2,6-Me2 and one deprotonated neighboring benzazacyclopentane ligand derived from deprotonation of the 2-methyl group followed by an attack of the carbon atom on the β-diketiminate backbone, [Ln(L2,6-Me2)- (L2,6-Me2)dep′(thf)] [Ln = Nd (2), Sm (3), and Er (4)]. The bonding mode in the {Ln(L2,6-Me2)dep′} moiety was also found to depend on the central metal ions.
