Molecular energetics of alkyl substituted pyridine N-oxides An experimental study

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Joana I. T. A. Cabral (Author) FEUP; Ricardo A. R. Monteiro (Author) Other; Marisa A. A. Rocha (Author) Other; Luís M. N. B. F. Santos (Author) FCUP; William E. Acree Jr. (Author) Other; Maria D. M. C. Ribeiro da Silva (Author) FCUP

Journal

Title: Journal of Thermal Analysis and Calorimetry

Vol. 100 No. 2

Pages: 431-439

ISSN: 1388-6150

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 9 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

CORDIS: Physical sciences > Chemistry > Organic chemistry ; Physical sciences > Chemistry > Physical chemistry

Other information

Authenticus ID: P-003-73T

DOI: 10.1007/s10973-009-0646-7

Abstract (EN): The standard (p(o) = 0.1 MPa) energies of combustion in oxygen, at T = 298.15 K, for the solid compounds 2-methylpyridine-N-oxide (2-MePyNO), 3-methylpyridine-N-oxide (3-MePyNO) and 3,5-dimethylpyridine-N-oxide (3,5-DMePyNO) were measured by static-bomb calorimetry, from which the respective standard molar enthalpies of formation in the condensed phase were derived. The standard molar enthalpies of sublimation, at the same temperature, were measured by Calvet microcalorimetry. From the standard molar enthalpy of formation in gaseous phase, the molar dissociation enthalpies of the N-O bonds were derived, and compared with values of the dissociation enthalpies of other N-O bonds available for other pyridine-N-oxide derivatives.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9