X-RAY-DIFFRACTION STUDY OF METHANOL-WATER MIXTURES

X-ray diffraction patterns of methanol-water mixtures with mole fracti ons of methanol molecules of 0.1, 0.25 and 0.9 have been measured. The experimental structure functions of mixtures are compared with those of pure solvents and with recent Molecular Dynamics results. Differenc e structure functions similar to thermodynamic excess functions are in troduced for the analysis of methanol-water interactions. The comparis on of the total and the difference structure functions from experiment s and simulations shows an overall good agreement.