Thermochemistry of heteroatomic compounds. Part 6. Enthalpy of solvation and complex formation of some halides of three-coordinated phosphorus compounds in pyridine

Abstract

Using previously published values of the enthalpies of solvation of some derivatives of three-coordinated phosphorus compounds, the contributions of the non-specific solvation enthalpies in the general solvation effect in benzene, p-xylene, methanol and pyridine have been calculated. Taking into account the known possibility of intramolecular complex formation between halogenated derivatives of PIII and pyridine, the magnitudes of specific interaction enthalpies for PCl3, PBr3, (EtO)2PCl, {A figure is presented} PCl and {A figure is presented} PBr were determinated. Thermodynamic parameters of complex formation between cyclic chlorophosphites and 1-dimethylamino-3,3-dimethyl-propan-2-one have been obtained and are discussed. © 1995.