S. Chang et al., CATALYTIC SILANE ALCOHOLYSIS BASED ON THE C5H5(CO)(PPH3)FE- NMR SPECTROSCOPIC IDENTIFICATION OF KEY INTERMEDIATES( MOIETY ), Journal of molecular catalysis. A, Chemical, 130(1-2), 1998, pp. 107-119
The Cp(CO)(PPh3)Fe+ fragment has been shown to catalyze silane alcohol
ysis in the presence of the non-coordinating counterion, B Ar'(4)-(Ar'
= 3,5-(CF3)(2)C6H3). When ethanol is used, catalyst deactivation rapi
dly occurs. However, when phenol is utilized, catalytic activity conti
nues until all of the phenol has been consumed. In each case, key inte
rmediates in the catalytic cycle, including resting states, have been
observed using low temperature NMR spectroscopy. The modes of catalyst
deactivation when ethanol is used have also been determined. (C) 1998
Elsevier Science B.V.