1422972-77-7Relevant academic research and scientific papers
Synthesis of rare-earth-metal iminopyrrolyl complexes from alkyl precursors: Ln→Al N-ancillary ligand transfer
Kaneko, Hiroshi,Dietrich, H. Martin,Schaedle, Christoph,Maichle-Moessmer, Caecilia,Tsurugi, Hayato,Toernroos, Karl W.,Mashima, Kazushi,Anwander, Reiner
, p. 1199 - 1208 (2013)
Protonolysis of [YMe3]n with 2-{(N-2,6-dialkylphenyl) iminomethyl)}pyrroles (alkyl = iPr (L1), Me (L2)) gave homoleptic iminopyrrolyl complexes YL13 and YL 23 as well as the complex [L2YL 2,Me]2 containing a dianionic pyrrolaldiminato ligand, formed via methylation of the imino backbone. Treatment of the half-sandwich complex [(C5Me5)YMe2]3 and yttrocene (C5Me5)2YMe(THF) with either 2 or 1 equiv of HL afforded the monomeric complexes (C5Me5)YL2 and (C5Me5)2YL,respectively. The complex (C5Me5)YL22 readily underwent Ln→Al iminopyrrolyl ligand transfer in the presence of trimethylaluminum, producing the known (C5Me5)Y(AlMe4) 2. Salt metatheses of homoleptic Ln(AlMe4)3 (Ln = Y, La) with KL gave complicated reaction mixtures from which the η5/η1:κ1 pyrrolaldiminato-bridged complex [L1,MeLa(AlMe4)]2 and bis(tetramethylaluminate) complex L2Y(AlMe4)2 could be isolated and crystallographically characterized. Moreover, the solid-state structures of YL23, [L2YL 2,Me]2, (C5Me5)YL1 2, (C5Me5)2YL1, and L2AlMe2 are presented.
