Scandium and Yttrium Complexes Supported by NNCp Heteroscorpionate Ligands: Synthesis, Structure, and Polymerization of ϵ-Caprolactone
作者:Antonio Otero、Juan Fernández-Baeza、Antonio Antiñolo、Agustín Lara-Sánchez、Emilia Martínez-Caballero、Juan Tejeda、Luis F. Sánchez-Barba、Carlos Alonso-Moreno、Isabel López-Solera
DOI:10.1021/om701033r
日期:2008.3.1
scorpionate/cyclopentadiene compounds with [M(CH2SiMe3)3(THF)3] (M = Sc, Y) afford the dialkyl complexes [M(CH2SiMe3)2(bpzcp)] (M = Sc (3), Y (4)) and [M(CH2SiMe3)2(bpztcp)] (M = Sc (5), Y (6)). The cationic alkyl complexes [M(CH2SiMe3)(bpzcp)]+ (M = Sc (7), Y (8)) were also prepared by the reaction of complexes 3 and 4 with [CPh3][B(C6F5)4] in THF. The structures of these compounds were determined by spectroscopic
两种蝎子/环戊二烯区域异构体-bpzcpH(1- [2,2-双(3,5-二甲基吡唑-1-基)-1,1-二苯乙基] -1,3-环戊二烯(1a)和2- [2 ,2-双(3,5-二甲基吡唑-1-基)-1,1-二苯乙基] -1,3-环戊二烯(1b))和bpztcpH(1- [2,2-双(3,5-二甲基吡唑- 1-基)-1-叔丁基乙基] -1,3-环戊二烯(2a)和2- [2,2-双(3,5-二甲基吡唑-1-基)-1-叔丁基乙基] -1, 3-环戊二烯(图2b)) -是由双(3,5-二甲基吡唑-1-基)甲烷与卜的去质子化制备ñ李接着反应用6,6- diphenylfulvene或6-叔-丁基富烯和随后用饱和氯化铵水溶液处理。蝎子/环戊二烯杂化物与[M(CH 2 SiMe 3)3(THF)3 ](M = Sc,Y)的反应得到二烷基络合物[M(CH 2 SiMe 3)2(bpzcp)](M = Sc (3),Y(4))和[M(CH