Abstract
It is shown that short-range order can be taken into account effectively for a liquid multicomponent system (mixture) of molecules with internal (particularly orientation) degrees of freedom within the framework of a quasichemical approximation (in the Guggenheim formulation) by using a vector in the space of internal states of the molecule (correlation vector) which is introduced together with the ordinary set (vector) of occupation numbers describing the longrange order. A closed system of equations is obtained in the correlation vector representation for the thermodynamic functions and occupation numbers of chemically distinct components in the space of internal states of the molecule, and its variational formulation is given. The possibilities for using the results obtained in the theory of the liquid-crystal state are discussed.
Similar content being viewed by others
Literature cited
M. I. Stephen and J. P. Straley, Rev. Mod. Phys.,46, No. 4, 617 (1974).
G. Lasher, J. Chem. Phys.,53, 4141 (1970).
J. G. J. Ypma and G. Vertogen, J. Phys.,37, 557 (1976); Solid State Commun.,18, 475 (1976).
J. Stecki, Bull. Acad. Pol. Sci., Ser. Sci. Chim.,23, 995 (1976).
K. M. Timling, J. Chem. Phys.,61, 465 (1974).
M. A. Cotter, Phys. Rev.,A10, 625 (1974).
V. B. Magalinskii, Izv. Vyssh. Uchebn. Zaved., Fiz., No. 1, 85 (1976).
Author information
Authors and Affiliations
Additional information
Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 17–20, September, 1977.
The author is grateful to Prof. V. K. Semenchenko for his interest in this work.
Rights and permissions
About this article
Cite this article
Magalinskii, V.B. Statistical thermodynamics of multicomponent systems of nonspherical molecules taking account of the short-range order in a quasichemical approximation. Soviet Physics Journal 20, 1131–1134 (1977). https://doi.org/10.1007/BF00897112
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00897112