ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Recently, Dougherty et al.1 reported ionisation potentials for the [M]+· and appearance potentials for the [M — CH3]+ ions of 2,7-dimethyl- (I), 4,5-dimethyl- (II), 2,4,5,7-tetramethyl- (III) and 3,4,5,6-tetramethyl-phenanthrenes (IV). For evaluation of strain energies they used the assignments presented by Arnett et al.2 The expression used is shown to be thermodynamically irrelevant and the strain energies of II and IV in comparison to I and III are re-estimated with the aid of thermodynamically relevant assumptions. A close agreement prevails between the present results and those obtained with comparison of heats of formation.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210061203
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