Enthalpies of combustion measured by precision oxygen-bomb combustion calorimetry are given for the following nine organic nitrogen compounds selected as key compounds present in or related to petroleum: 4-methylpyridine, piperidine, 2-methylpiperidine, 1- methylpyrrole, 2,5-dimethylpyrrole, indole, 2,3-dimethylindole, 9- methylcarbazole, and isoquinoline. Enthalpies of formation in the condensed phase were derived. Enthalpies of vaporization for five of the compounds were derived from vapor-pressure measurements, and enthalpies of formation in the gaseous state are given for these five compounds.
J. Chem. and Eng. Data, V. 17, No. 1, PP. 28-31