The standard molar enthalpy of formation of 2,3-diphenylcycloprop-2-en-1-one

Authors

William V. Steele, United States Department of Energy
Bruce E. Gammon, United States Department of Energy
Norris K. Smith, United States Department of Energy
James S. Chickos, Department of Chemistry and Biochemistry
Arthur Greenberg, New Jersey Institute of Technology
Joel F. Liebman, University of Maryland, Baltimore County (UMBC)

Document Type

Article

Publication Date

1-1-1985

Abstract

The standard molar enthalpies of combustion and sublimation for 2,3-diphenylcycloprop-2-en-1-one (C15H10O) at 298.15 K have been redetermined. The experimental values: ΔfHm^o(C15H10 O, cr) = (198.03±1.96) kJ·mol^-1 and Δcr^gHm^o(C15 H10O) = (119.7±8) kJ·mol^-1 yield a value for ΔfHm^o(C15H10 O, g) = (317.7±8.2) kJ·mol^-1. If one assumes a ring strain in cycloprop-2-en-1-one of 280 kJ·mol^-1, then the resonance stabilization in the three-membered ring is 88 kJ·mol^-1. This indicates substantial ground-state aromatic stabilization in this molecule. © 1985.

Identifier

0009821769 (Scopus)

Publication Title

Journal of Chemical Thermodynamics

External Full Text Location

https://doi.org/10.1016/0021-9614(85)90049-7

e-ISSN

10963626

ISSN

00219614

First Page

505

Last Page

511

Issue

6

Volume

17

Recommended Citation

Steele, William V.; Gammon, Bruce E.; Smith, Norris K.; Chickos, James S.; Greenberg, Arthur; and Liebman, Joel F., "The standard molar enthalpy of formation of 2,3-diphenylcycloprop-2-en-1-one" (1985). Faculty Publications. 21186.
https://digitalcommons.njit.edu/fac_pubs/21186