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The Thiomethyl Anion: Formation, Reactivity, and Thermodynamic Properties

✍ Scribed by Steven R. Kass; Hangzhou Guo; Gregg D. Dahlke

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
478 KB
Volume
1
Category
Article
ISSN
1044-0305

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✦ Synopsis

The thiomethyl anion (1) has been generated by fluorodesilylation of trimethylsilylmethanethiol in a variable-temperature flowing afterglow device. The proton affinity (1649 * 12 kJ mol-l) and electron affinity (0.67 f .13 eV) were determined and compared to a previously reported molecular orbital calculation. Isomerization via a 1,2-proton shift does not take place between -40 O and 100 "C despite a 156 kJ mol-' driving force. Ionmolecule reactions of 1 were examined with a number of reagents including N20, 02, CS2, COS, and CO1. Hydride ion transfer was observed in every case, along with other products, and thermodynamic information has been derived. (I Am Sac Mass Suectrom 1990, 1, 366-371) *Visiting scholar from the Institute of Pharmacology and Toxicology, Beijing, People's Republic of China.

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