Thermochemistry of 2,2 '-dipyridil N-oxide and 2,2 '-dipyridil N,N '-dioxide. The dissociation enthalpies of the N-O bonds

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Ana Filipa L O M Santos (Author) FCUP; Andre R Monteiro (Author) Other; Jorge M Goncalves (Author) FCUP; William E Acree (Author) Other; Maria D M C R Ribeiro da Silva (Author) FCUP

Journal

Title: Journal of Chemical Thermodynamics

Vol. 43 No. 2

Pages: 1044-1049

ISSN: 0021-9614

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 4 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-002-QBN

DOI: 10.1016/j.jct.2011.02.011

Abstract (EN): In this paper, the first, second and mean (N-O) bond dissociation enthalpies (BDEs) were derived from the standard (p degrees = 0.1 MPa) molar enthalpies of formation, in the gaseous phase, Delta H-r degrees(m)(g), at T = 298.15 K, of 2,2'-dipyridil N-oxide and 2,2'-dipyridil N,N'-dioxide. These values were calculated from experimental thermodynamic parameters, namely from the standard (p degrees = 0.1 MPa) molar enthalpies of formation, in the crystalline phase, Delta H-f degrees(m)(cr), at T = 298.15 K, obtained from the standard molar enthalpies of combustion, Delta H-c degrees(m), measured by static bomb combustion calorimetry, and from the standard molar enthalpies of sublimation, at T = 298.15 K, determined from Knudsen mass-loss effusion method.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6