The energetics of the benzoyl radical have been studied by photoacoustic calorimetry. The value obtained for D[PhC (0)-H]. 371? 11 kJ mol-' (89 + 3 kcal mol-' ), agrees with an early result derived from iodination kinetic experiments and does not support a recent suggestion that the radical is reson
The heat of formation of the benzophenone ketyl radical by time-resolved photoacoustic calorimetry
β Scribed by Luis G. Arnaut; Richard A. Caldwell
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 431 KB
- Volume
- 65
- Category
- Article
- ISSN
- 1010-6030
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π SIMILAR VOLUMES
The energetics and lifetimes of a number of substituted oletin and diene triplets have been measured using photoacoustic calorimetry. All the acyclic triplets studied have triplet energies less than their spectroscopic values. This suggests they prefer a twisted relaxed geometry.
The reduction of four triphenyl methane (TPM) dyes (brilliant green (BG+), malachite green (MG' ), crystal violet (CV+) and methyl green (MEG")) by diphenyl ketyl radicals (BPH' ) and hydrated electrons (e,,-) was studied by pulse radiolytic kinetic spectrophotometry. The rate constants for the re