Abstract
AbstractAttempted synthesis of tris(β‐diketiminato)lanthanide complexes [Ln(L)3] (L = [{N(C6H3Me2‐2,6)C(Me)}2CH]) resulted in ligand deprotonation, and different outcomes depending on the central metal used were observed. Reaction of YbCl3 with NaL (3 equiv.) afforded the five‐membered cyclometalated ytterbium β‐diketiminate complex [Yb(L)(L)dep] (1). The same reaction with LnCl3 (Ln = Nd, Sm, and Er) gave the new complexes composed of one normal L and one deprotonated neighboring benzazacyclopentane ligand derived from deprotonation of the 2‐methyl group followed by an attack of thecarbon atom on the β‐diketiminate backbone, [Ln(L)(L)dep′(thf)] [Ln = Nd (2), Sm (3), and Er (4)]. The bonding mode in the {Ln(L)dep′} moiety was also found to depend on the central metal ions.
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