作者:Valerio Berdini、Mauro Bassetti、Giovanna Mancini、Luigi Mandolini、Donato Monti
DOI:10.1016/s0022-328x(97)00521-4
日期:1998.1
coordination of the carbonyl oxygen to the crown ether held cation. This shift is absent or small in the more polar solvents tetrahydrofuran, acetonitrile, or dioxane, and it is not observed for the isopropyl complex 5, suggesting that steric hindrance of the alkyl group prevents acyl coordination to the metal ion. The terminal carbonyl group of complexes 4, 5 and 6 displays a shift of the ν(CO) band to higher
铁络合物的[Fe(η 5 -配体)(CO)2 R] [配体= C 5 H ^ 5(CP)中,R =我(1); 配体= C 5 H 5,R = CHMe 2(2);配体= C 9 H 7(Ind),R = Me(3)]与冠醚官能化的膦[Ph 2 P–CH 2-(aza-15-crown-5)](L)反应,得到烷基洄游插入的[Fe(η 5 -配体)(COR)(CO)(L)] 4,5和6,分别。环戊二烯基甲基络合物[Fe(η 5 -C 5 H ^ 5)(CO)2只在回流的己烷〕我发生反应其中L。2和3在乙腈或氯仿中的反应已通过FT-IR光谱法或UV-Vis进行了跟踪。钠盐或钙盐,NaI,NaPF 6或CaI 2的存在不会影响环戊二烯基络合物2的反应性,而会增加茚基络合物3的反应速率的2至3倍。乙酰络合物的[Fe(η 5 -配体)(COME)(CO)(L)],(配体= CP时,4 ;配位体=工业,