Thermochemical study of 2-, 4-, 6-, and 8-methylquinoline

✍ Scribed by Manuel A.V. Ribeiro da Silva; M.Agostinha R. Matos; Luı́sa M.P.F. Amaral

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 421 KB
• Volume: 27
• Category: Article
• ISSN: 0021-9614
• DOI: 10.1006/jcht.1995.0058

✦ Synopsis

The standard (p°= 0.1 MPa) molar enthalpies of formation for the liquid 2-, 4-, 6-, and 8-methylquinolines: C9H6N(CH3) were derived from the standard molar enthalpies of combustion, in oxygen, at the temperature T = 298.15 K, measured by static-bomb combustion calorimetry. The standard molar enthalpies of vaporization for the same compounds were determined by microcalorimetry. The calorimeter was tested by measuring the enthalpies of vaporization of undecane and hexadecane.

C9H6N(CH3)

-DcH°m(l)/(kJ•mol -1 ) D g l H°m/(kJ•mol -1 ) 2-methylquinoline 5314.3 2 2.1 66.1 2 1.9 4-methylquinoline 5315.9 2 2.4 67.6 2 1.8 6-methylquinoline 5314.6 2 2.0 67.7 2 1.8 8-methylquinoline 5323.3 2 2.0 65.7 2 1.9