and new derivatives of Ru3(CO)12 and H4Ru4(CO)12 by substitution reactions initiated by sodium diphenylketyl are described. The range of ligands studied includes isocyanides, tertiary phosphines and phosphites, tertiary arsines and SbPh3. The reactions are characterised by high degrees of specificity and conversion: under mild conditions up to four ligands can be introduced. Comparisons with the corresponding
描述了由二苯基酮基
钠引发的取代反应合成的六十多种Ru 3(CO)12和H 4 Ru 4(CO)12已知新衍
生物。研究的
配体范围包括异
氰化物,叔膦和
亚磷酸盐,叔,和SbPh 3。反应的特征在于高度的特异性和转化率:在温和的条件下,最多可以引入四个
配体。在几种情况下,与相应的热诱导反应进行了比较。尽管可能必须考虑
配体的相对路易斯碱强度,但是该反应提供了到达羰基簇的混合
配体衍
生物的途径。简要讨论了这些反应的可能机理,以及Ru 3(CO)12-n L n配合物的IRν(CO)光谱。