Journal of the American Chemical Society p. 8333 - 8336 (1988)
Update date:2022-07-29
Topics:
Wetzel, Donna M.
Brauman, John I.
We have generated (trimethylsilyl)methyl anion, (CH3)3SiCH2-, in the gas phase and measured cross sections for electron photodetachment using ion cyclotron resonance spectrometry.From the electron photodetachment spectrum we obtain the electron affinity of (trimethylsilyl)methyl radical, EA = 21.9 +/- 0.3 kcal/mol, and derive the proton affinity of the anion, PA = 390.9 +/- 1.5 kcal/mol.These termochemical parameters provide a quantitative measure of α-silyl carbanion stabilization of about 20 kcal/mol.
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