Liquid structure of 2,2,2,-trifluoroethanol-dimethyl sulfoxide mixtures as studied by X-ray diffraction

✍ Scribed by T. Radnai; S. Ishiguro; H. Ohtaki

• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 418 KB
• Volume: 159
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(89)87527-x

✦ Synopsis

The liquid structure of 1: 1 and 2: 1 molar mixtures of2,2,2-trifluoroethanol (TFE) and dimethyl sulfoxide (DMSO) has been investigated by X-ray diffraction at 25°C. The nearest neighbor structure in the mixtures involves the O-H...0 type H-bonds between TFE and DMSO molecules besides the relatively long-range intermolecular ordering, which is characteristic of both pure TFE and DMSO, in their mixtures. The long-range interactions may arise from H-bonding betwew TFE and DMSO clusters, both consisting of a few molecules of each component liquid. No evidence was found for the short-range interaction between the S atom of DMSO and the 0 atom of TFE.