New Mixed-Donor Bidentate Ligands Based on N-Heterocyclic Carbene and Thione Donors
作者:Miriam Slivarichova、Ruaa Ahmad、Yu-Ying Kuo、Joshua Nunn、Mairi F. Haddow、Hafiizah Othman、Gareth R. Owen
DOI:10.1021/om200629j
日期:2011.9.12
coordination to copper(I) salts has been explored, providing the complexes [Cu(CSR)X]2 (where R = methyl, benzyl; halide = bromide, iodide). Structuralcharacterization of two of the complexes confirmed the dimeric nature of these complexes in the solid state but revealed different coordination modes for each case (κ1-C, κ1-S, μ-S and κ1-C, κ1-S). Solutions of the coppercomplexes slowly react with oxygen under
据报道,一个新的混合供体双齿配体族同时含有N-杂环卡宾(NHC)和硫酮官能团。咪唑鎓盐前体1,1'-亚甲基(3-R-咪唑-2-亚砜)(3-R-2 H-咪唑-2-硫酮)[ CS R H]卤化物(其中R =甲基,苄基;卤化物) =溴化物,碘化物)已合成。已经研究了它们与铜(I)盐的配位,从而提供了配合物[Cu(CS R)X] 2(其中R =甲基,苄基;卤化物=溴化物,碘化物)。两种复合物的结构表征证实了这些复合物中的固态二聚体性质,但没有发现对于每种情况不同的配位模式(κ 1 - c ^,κ 1-小号,μ-小号和κ 1 - c ^,κ 1 -小号)。铜络合物的溶液在有氧条件下与氧气缓慢反应,形成未配位的1,1'-亚甲基(3-R-2 H-咪唑-2-酮)(3-R-2 H-咪唑-2-硫酮),SO R(其中R =甲基,苄基),其中NHC部分已转化为脲官能团。研究了络合物作为铜催化交叉偶联反应的候选物。