title: Dimethyl selenoxide.
abstract: The title molecule, C2H6OSe, has a trigonal-pyramidal structure analogous to that of its sulfur analog, dimethyl sulfoxide (DMSO). The Se-O distance in dimethyl selenoxide (DMSeO) is 1.6756 (16) A [versus S-O of 1.531 (5) A in DMSO], consistent with a highly polar bond. In the solid state, the molecules of DMSeO are linked into centrosymmetric dimers formed by two C-H...O hydrogen bonds. These dimers further aggregate into a ladder-like supramolecular network via two additional intermolecular C-H...O interactions. As a result, each O atom of DMSeO acts as an acceptor of three hydrogen bonds.
authors.affiliation: Department of Chemistry, University at Albany, SUNY, Albany, NY 12222, USA.
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Filatov
authors.forename: Eric
authors.initials: E
authors.lastname: Block
authors.forename: Marina A
authors.initials: MA
authors.lastname: Petrukhina
mesh_terms: D004121:Dimethyl Sulfoxide / Q000737:chemistry; D006860:Hydrogen Bonding; D008958:Models, Molecular; D008968:Molecular Conformation; D016566:Organoselenium Compounds / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D016566:Organoselenium Compounds; D010087:Oxides; C007481:dimethylselenoxide; D004121:Dimethyl Sulfoxide