van der Waals interactions of carbon dioxide

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Abstract
Van der Waals C6 coefficients for the interaction of CO2 with CO2, He, Ne, Ar, Kr, Xe, H2, N2, O2, H, Li, Na, K, Rb, and Cs are calculated using Padé approximants and experimental frequency‐dependent polarizabilities α(ω). The tightness of the error bounds and accuracy of the results is increased dramatically by treating the infrared contributions to α(ω) of CO2 separately. The use of formulas involving finite linewidths (damping factors) is discussed and found to be useful in fitting the infrared terms to α(ω) but to have negligible effect on the C6 coefficients.

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