The Journal of Physical Chemistry

Proton affinity and heat of formation of silylene

SK Shin, JL Beauchamp

Index: Shin, Seung Koo; Beauchamp, J. L. Journal of Physical Chemistry, 1986 , vol. 90, # 8 p. 1507 - 1509

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Citation Number: 41

Abstract

Using the techniques of Fourier transform ion cyclotron resonance spectroscopy, we determined the proton affinity of silylene to be 201 f 3 kcalmol-'from a study of the kinetics and thermochemistry of proton transfer from SiH3+ to a series of n-donor bases with well- established gas-phase base strengths. This value leads to= 69 f 3 kcal. mol-l, which is 11 kcal-mol-'higher than the previously accepted value (Walsh, R. Acc. Chem. Res. 1981, 14, ...