By use of a solution calorimeter the standard enthalpy of hydrolysis of P(CN)3(c) at 298.15 K has been determined as –44.9 ± 0.1 kcal mol–1 and the derived standard enthalpy of formation as 117.9 ± 6.0 kcal mol–1. The enthalpy of sublimation of P(CN)3 was determined by effusion manometry as 18.0 ± 0.7 kcal mol–1 and the P–CN mean bond dissociation energy was estimated as 84 kcal mol–1.
R. H. Davies, A. Finch, P. J. Gardner, A. Hameed and M. Stephens, J. Chem. Soc., Dalton Trans., 1976, 556 DOI: 10.1039/DT9760000556
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