A General Route to Perfluoroalkyl‐ and Trifluorovinyl‐Substituted Fischer Carbene Complexes of Tungsten and Chromium – Syntheses, Characterisation and Structures
作者:Wieland Tyrra、Yurii L. Yagupolskii、Nataliya V. Kirij、Eduard B. Rusanov、Silke Kremer、Dieter Naumann
DOI:10.1002/ejic.201001309
日期:2011.4
smoothly with perfluoroalkyl (Rf = CF3, C2F5) and trifluorovinyl (Rf = CF=CF2) silanes in the presence of equimolar amounts of fluoride ions with exclusive attack of one of the CO ligands to form the corresponding salts, Cat[(CO)5MC(Rf)O] (Cat = [Me4N]+, [Cs(15-crown-5)2]+) which after methylation represent the first hitherto unknown perfluoroorgano-substituted Fischer carbene complexes, (CO)5MC(Rf)(OCH3)
六羰基钨和-铬[M(CO)6; M = W, Cr] 与全氟烷基 (Rf = CF3, C2F5) 和三氟乙烯基 (Rf = CF=CF2) 硅烷在等摩尔量的氟离子存在下顺利反应,独家攻击其中一个 CO 配体以形成相应的盐, Cat[(CO)5MC(Rf)O] (Cat = [Me4N]+, [Cs(15-crown-5)2]+) 甲基化后代表第一个迄今为止未知的全氟有机取代的 Fischer 卡宾配合物,(CO )5MC(Rf)(OCH3),这些金属。甲氧基可以很容易地被氨基官能团取代,如相应的羰基钨化合物所示。(CO)5WC(CF3)(OCH3) 和 (CO)5WC(CF3)[N(C2H5)2] 的分子结构已通过 XRD 测量阐明。