Kihara potential

The Kihara potential, developed by Taro Kihara ^[1] in 1951, is a non-spherical generalisation of the Lennard-Jones model. It is given by

Failed to parse (Conversion error. Server ("https://wikimedia.org/api/rest_") reported: "Cannot get mml. Server problem."): {\displaystyle \Phi _{12}(\rho )=\Phi _{0}\left[{\frac {m}{n-m}}\left({\frac {\rho _{0}}{\rho }}\right)^{n}-{\frac {n}{n-m}}\left({\frac {\rho _{0}}{\rho }}\right)^{m}\right],~~~n>m>3.}

where Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \Phi_{12}} is the intermolecular pair potential, and Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \rho} is the shortest distance between molecule cores.

Oblate core

^[2].

References

Related material

[1] Taro Kihara "The Second Virial Coefficient of Non-Spherical Molecules", Journal of the Physical Society of Japan 6 pp. 289-296 (1951)

[2] Francisco Gámez, Santiago Lago, Benito Garzón, Patrick J. Merkling and Carlos Vega "Vapour-liquid equilibrium of fluids composed by oblate molecules", Molecular Physics 106 pp. 1331-1339 (2008)

[1]

[2]

Kihara potential

Oblate core

References

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