Preparation of the first stable formylsilane,(Me3Si) 3SiCHO, from a zirconium. eta. 2-silaacyl complex

FH Elsner, HG Woo, TD Tilley

Index: Elsner,F.H.; Woo,H.G.; Tilley,T.D. Journal of the American Chemical Society, 1988 , vol. 110, p. 313

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Citation Number: 48

Abstract

6 carbon monoxide (100 psi) in pentane. The carbonyl stretching frequency (1440 cm-I) and the 13C NMR shift of the carbonyl carbon for 2 are similar to corresponding values for CpzZr (s2-COSiMe3) C1. 4d A possible explanation for the greater reactivity of 1 over CpZZr [Si (SiMeJ3] C1 toward carbon monoxide is that increased steric interactions about the metal center promote CO insertion in 1. A similar effect has been observed for Cp2Zr-[CH ( ...