Simultaneously predicted transport and equilibrium properties of boron trifluoride gas

An isotropic temperature-dependent intermolecular potential is proposed for simultaneous prediction of the second virial coefficient B and the viscosi ty eta of BF3 over a wide temperature range. Potential parameters at 0 K (r epulsive power n = 24.28, equilibrium distance r(m) = 4.174 x 10(-10) m, po tential well depth epsilon = 317.1 K) and the enlargement of the first exci ted state delta = 9.2 x 10(-12) m are determined by solving an inverse prob lem of minimization of the sum of squared deviations between calculated and measured data normalized to the relative experimental r(m)((eff))(T) and e psilon((eff))(T) error. The temperature dependence of the average excited s tate parameters ris implied in the temperature dependence of the effective excited state enlargement calculated via the vibrational partition function . Tables with recommended potential parameters, second virial coefficient, viscosity and self-diffusion in a temperature range of 175-900 K are propos ed.