Monoanionic triketiminate ligands: Peculiarity of coordination mode to lithium and rare earth ions
作者:Grigorii G. Skvortsov、Georgy K. Fukin、Anton V. Cherkasov、Tatyana A. Kovylina、Alexander A. Trifonov
DOI:10.1016/j.ica.2020.119623
日期:2020.8
reactions of the potassium derivatives of the related triketimines 2, 3 with YbI2(THF)2 resulted in the formation of mononuclear triketiminate iodo Yb(II) complexes [(2,6-Me2C6H3N = CMe)2C(2-MeOC6H4N = CtBu)]YbI(THF)2 (10) and [(2,6-Me2C6H3N = CMe)2C(2,6-Me2C6H3N = CtBu)]YbI(TMEDA) (11). X-ray analysis revealed that in 4 and rare-earth metals complexes 7–11 the monoanionic β-triketiminate ligands [(2,6-Me2C6H3N = CMe)3C]−
β-三酮亚胺(2,6-Me2C6H3N = CMe)3CH(1),(2,6-Me2C6H3N = CMe)2CH(2-MeOC6H4N = CtBu)(2),(2,6-Me2C6H3N = CMe)的抽象质子化通过等摩尔量的n-BuLi 2CH(2,6-Me2C6H3N = CtBu)(3)得到三酮化锂配合物[(2,6-Me2C6H3N = CMe)3C] Li(THF)(4),[(2,6- Me2C6H3N = CMe)2C(2-MeOC6H4N = CtBu)] Li(THF)2(5),[(2,6-Me2C6H3N = CMe)2C(2,6-Me2C6H3N = CtBu)] Li(THF)2(6 )以70-80%的收益率。LnCl3(Ln = Y,Nd)与6的盐复分解反应导致形成中性三酮基二氯配合物[(2,6-Me2C6H3N = CMe)2C(2,6-Me2C6H3N = CtBu)]