title: Vibrational spectra of diethylsulfoxide.
abstract: FT IR and Raman spectroscopic studies of pure diethylsulfoxide (DESO) in the liquid and in the solid states and its solutions in various solvents have been performed. Analysis of SO- and CH-stretching regions in a wide range of concentration shows that the bands may be fitted satisfactorily by considering seven components. In addition, fundamental frequencies have been assigned using ab initio calculations at the RHF/3-21G* levels. The results obtained confirm a viewpoint on a self-associative structure of DESO, and support the hypothesis of the existence of different types of intermolecular associates including both dipole-dipole and hydrogen bonding mechanisms.
authors.affiliation: Department of Chemistry, Yerevan State University, 375049, Yerevan, Armenia. fizkol@ysu.am
authors.forename: Shiraz A
authors.initials: SA
authors.lastname: Markarian
authors.forename: Liana S
authors.initials: LS
authors.lastname: Gabrielian
authors.forename: Sergio
authors.initials: S
authors.lastname: Bonora
authors.forename: Concezio
authors.initials: C
authors.lastname: Fagnano
mesh_terms: D003451:Cryoprotective Agents / Q000737:chemistry; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D006860:Hydrogen Bonding; D015394:Molecular Structure; D012996:Solutions; D012997:Solvents; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013454:Sulfoxides / Q000737:chemistry*
chemical_list: D003451:Cryoprotective Agents; D012996:Solutions; D012997:Solvents; D013454:Sulfoxides; C454662:diethyl sulfoxide; D004121:Dimethyl Sulfoxide