Four-m calculations on methanol-water solutions |
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Authors: | Susumu Okazaki Koichiro Nakanishi Hidekazu Touhara |
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Institution: | Department of Industrial Chemistry, Kyoto University, Kyoto 606 Japan |
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Abstract: | The structural characteristics of methanol in aqueous solutions, on a molecular level, can be elucidated by four types of calculation: molecular orbital, multiparametric optimization of intermolecular potential function, Monte Carlo, and molecular dynamics. As a first step, the potential between water and methanol was determined by ab initio LCAO SCF molecular orbital calculations with the STO—3G basis set and subsequent multiparametric fitting. This and water—water potentials were used for Monte Carlo calculation on an aqueous methanol solution containing a 1:216 mole ratio of methanol to water. Hydration around methanol is briefly discussed. |
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