Synthesis and structural chemistry of bis(pyridylimino)isoindolato–ruthenium complexes and their activity as mediators in the atom transfer radical polymerization (ATRP) of styrene
作者:José A. Camerano、Anne-Sophie Rodrigues、Frank Rominger、Hubert Wadepohl、Lutz H. Gade
DOI:10.1016/j.jorganchem.2011.01.009
日期:2011.4
with [Ru(μ-Cl)2(cod)]x in presence of triethylamine using coordinating solvents like acetonitrile, dimethyl sulfoxide or pyridine cleanly gave the complexes [BPI(L1,L2)}RuII(Cl)(S)2] (L1: S = acetonitrile (1), dimethyl sulfoxide (2), pyridine (3); L2: S = acetonitrile (4), dimethyl sulfoxide (5), pyridine (6)). In these complexes the BPI ligands meridionally coordinated to the ruthenium center as established
双吡啶基异吲哚(BPI)型配体L1和L2(L1 = 1,3-Bis(2-(4-叔丁基吡啶基)亚氨基)异吲哚,L2 = 1,3-Bis(2-(5-溴)乙腈,二甲基亚砜或吡啶等配位溶剂,在三乙胺存在下,用[Ru(μ-Cl)2(cod)] x与(Ru(μ-Cl)2(cod)] x)亚氨基)-5,6-二甲基异吲哚)干净地得到络合物[BPI(L1,L2) } Ru II(Cl)(S)2 ](L1:S =乙腈(1),二甲基亚砜(2),吡啶(3);L2:S =乙腈(4),二甲基亚砜(5),吡啶(6))。在这些配合物中,BPI配体经子午线配位至钌中心,这是通过X射线衍射对配合物3和6建立的。测试了配合物1 – 6在苯乙烯的直接ATRP(原子转移自由基聚合)中的催化活性。