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A Study of the Liquid Structure of Dimethyl Sulfoxide by the X-Ray Diffraction
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1987
Year
X-ray CrystallographyMaterials ScienceCrystal StructureDimethyl SulfoxideEngineeringPhysicochemical AnalysisNatural SciencesX-ray DiffractionPhysical ChemistryChemistryMolecular ChemistryDesulfurizationDeep Eutectic SolventCrystallographyLiquid StructureBiophysicsSolution (Chemistry)
The liquid structure of dimethyl sulfoxide (DMSO) was investigated by X-ray diffraction. The intramolecular structure parameters were obtained as follows: S = 0 150(1) pm, C - S 180(1) pm, nonbonding C · · · O 267(4) pm and C · · · C 271 (7) pm. It is suggested that the molecular arrangement in the liquid state is similar to that in the solid state. It is pointed out that not only the value but also the position of the dipole mom ent vector in the molecule is essential for dipoledipole intermolecular interactions and that the latter factor results in a higher melting point of DMSO than of N ,N -dimethylformamide in spite of their similar dipole moments.