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- Title
Thermochemistry of Heteroatomic Compounds. Enthalpy of Dissolution and Vaporization of Selected Trimethylsilyl Di- and Tetrathiophosphates.
- Authors
Ovchinnikov, V. V.; Mal'tseva, S. A.; Kremleva, N. V.
- Abstract
Enthalpy of vaporization (ΔvapH°) of trimethylsilyl esters of dithio- and tetratiophosphoric acids (RX)2P(S)SSiMe3 (X = O, S) have been determined from the experimentally determined enthalpies of their dissolution (ΔdissH°) in n-hexane at 296–298 K and the values of molar refraction (MRD) with correction a for the branching of the carbon substituent according to the equation ΔvapH° = ΔdH°(n-hexane) + 4.39 + 1.05(MRD − α). The obtained vaporization values can be used to calculate the heats of formation of similar, thermally unstable, compounds for experimental calorimetry.
- Subjects
HEATS of vaporization; THERMOCHEMISTRY; HEAT of formation; VAPORIZATION; CALORIMETRY
- Publication
Russian Journal of General Chemistry, 2019, Vol 89, Issue 10, p2163
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S1070363219100293