Synthesis and Structures of Zirconium and Hafnium Alkyl Complexes That Contain [H<sub>3</sub>CC(2-C<sub>5</sub>H<sub>4</sub>N)(CH<sub>2</sub>NAr)<sub>2</sub>]<sup>2</sup><sup>-</sup> ([ArNpy]<sup>2</sup><sup>-</sup>; Ar = Mesityl, Triisopropylphenyl) Ligands
作者:Parisa Mehrkhodavandi、Richard R. Schrock、Peter J. Bonitatebus
DOI:10.1021/om0207055
日期:2002.12.1
We report the synthesis of the arylated diamidopyridine ligands [H3CC(2-C5H4N)(CH2NAr)2]2- ([ArNpy]2-; Ar = 2,4,6-Me3C6H2 (Mes), 2,4,6-(i-Pr)3C6H2 (Trip)). [ArNpy]M(NMe2)2 (M = Zr, Hf) complexes were prepared by treating M(NMe2)4 with H2[ArNpy], while [ArNpy]MCl2 was prepared in a reaction between [ArNpy]M(NMe2)2 and Me3SiCl. Zirconium dialkyl complexes that were prepared include [MesNpy]ZrR2 (R =
我们报告的芳基化diamidopyridine配体的合成[H 3 CC(2-C 5 H ^ 4 N)(CH 2 NAR)2 ] 2 -([ArNpy] 2 - ; Ar为2,4,6-ME 3 Ç 6 H 2(Mes),2,4,6-(i-Pr)3 C 6 H 2(Trip))。通过用H 2 [ArNpy]处理M(NMe 2)4来制备[ArNpy] M(NMe 2)2(M = Zr,Hf)络合物,而[ArNpy] MCl 2是在[ArNpy] M之间的反应中制备的(NMe 2)2和Me 3 SiCl。制备的二烷基锆配合物包括[MesNpy] ZrR 2(R =甲基,苄基,新戊基,异丁基),[MesNpy] Zr(THF)Me 2,[Li(Et 2 O)] [MesNpy] ZrMe 3 },和[TripNpy] Zr(i-Bu)2。R [MesNpy] HfR 2络合物相对稳定,即使R中存在β质子(R