13C splittings from some hydroxycyclohexadienyl radicals derived from aromatic polycarboxylates
- 1 May 1974
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 60 (9), 3355-3358
- https://doi.org/10.1063/1.1681540
Abstract
The ESR spectra of hydroxycyclohexadienyl radicals derived from the anions of pyromellitic and benzene‐pentacarboxylic acids have been observed in a rapid flow systen (Ti/H2O2). Owing to their highly charged nature, the radical lifetimes were sufficiently enhanced so that 13C satellite lines could be observed in natural abundance. The numerical values and assignments of the hyperfine coupling constants suggest a planar system and can adequately be described by a Karplus‐Fraenkel treatment.Keywords
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