Heat of formation for the benzoyl cation by photoionization mass spectrometry.

Eur J Mass Spectrom (Chichester)

Departm ent of Chemistry, La Trobe University, Victoria 3086, Australia.

Published: June 2009

Dissociative photoionization mass spectrometry has been used to measure the PhCO(+) appearance energies for several benzoyl compounds. Based on these threshold measurements, an experimental 298 K heat of formation of 738.8 -/+ 3.3 kJ mol(-1) is obtained for the benzoyl cation. The experimental results are supported by high-level ab initio calculations.

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http://dx.doi.org/10.1255/ejms.949DOI Listing

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