Synthesis and transfer hydrogenation catalysis of chelating triazolylidene ruthenium(II) complexes: Effect of the pendant arm, p-cymene, acetonitrile and butadienesulfonyl co-ligands
作者:Juan Olguín、M. Ángeles Paz-Sandoval
DOI:10.1016/j.jorganchem.2017.08.012
日期:2017.10
Five ruthenium(II) complexes containing chelating triazolylidene ligands, varying on the allyl or picolyl pendant arm, and p-cymene, MeCN and/or butadienesulfonyl co-ligands have been synthesised and characterised: [(p-cymene)Ru(TzAllylMe)Cl]PF6 (1), [(p-cymene)Ru(TzPyMe)Cl](OTf) (2), [Ru(TzAllylMe)(CH3CN)4](PF6)2 (4), [Ru(TzPyMe)(CH3CN)4](OTf)2 (5) and [Ru(TzPyMe)(η1-SO2CHCHCHCH2)(CH3CN)3]OTf (7)
含螯合配位体triazolylidene,对烯丙基或吡啶甲基悬垂臂变化的五个钌(II)络合物,和p -cymene,乙腈和/或butadienesulfonyl共配位体已被合成和表征:[(p -cymene)的Ru(TzAllylMe)氯] PF 6(1),[(对苯甲基)Ru(TzPyMe)Cl](OTf)(2),[Ru(TzAllylMe)(CH 3 CN)4 ](PF 6)2(4),[Ru( TzPyMe)(CH 3 CN)4 ](OTF)2(5)和的[Ru(TzPyMe)(η 1 -SO 2 CHCHCHCH 2)(CH 3 CN)3 ] OTf(7),TzRMe = 1-R-4-丁基-1,2,3-三唑基亚烷基(R =烯丙基或2-吡啶甲基,分别为TzAllylMe或TzPyMe)。通过筛选二苯甲酮转移加氢中络合物的催化活性,可以评估螯合臂和共配体对钌中心的作用。