Enthalpies of combustion of phenazine N-oxide, phenazine, benzofuroxan, and benzofurazan: the dissociation enthalpies of the (N-O) bonds

Article abstract of DOI:10.1016/0021-9614(90)90181-O

The standard (p⁰ = 0.1 MPa) molar enthalpies of combustion at 298.15 K were measured by static-bomb calorimetry and the standard molar enthalpies of sublimation at 298.15 K were measured by microcalorimetry for phenazine, benzofurazon, and their corresponding N-oxides: From the standard molar enthalpies of formation of the gaseous compounds, the molar dissociation enthalpies of the (N-O) bonds were derived: D(N-O)/(kJ*mol^-1): phenazine N-oxide, 280.7 +/- 5.6; benzofuroxan, 250.9 +/- 3.0.