title: Structure of ethyl phenyl selenone.
abstract: C8H10O2Se, M(r) = 217.13, monoclinic, P2(1)/n, a = 9.511 (2), b = 15.741 (3) c = 11.467 (2) A, beta = 91.31 (2) degrees, V = 1716.3 (6) A3, Z = 8 (two molecules per asymmetric unit), Dx = 1.68 Mg m-3, lambda (Mo K alpha) = 0.71069 A, mu = 4.19 mm-1, F(000) = 864, T congruent to 295 K, R(obs) = 0.060 for 1944 unique reflections with I > 2 sigma (I). The two molecules in the asymmetric unit are very similar; they differ only in the conformation of the ethyl side chain. There is considerable disorder in one molecule, that possibly can be represented by torsion about the Se-C(ethyl) bond. In each case the O atoms of the SeO2 group lie near the plane of the phenyl group. Se-O ... H-C interactions appear to be the only significant intermolecular interactions. These involve an H atom of the alpha-C atom of the ethyl group in addition to the H atoms of the phenyl group.
authors: Institute for Cancer Research, Fox Chase Cancer Center, Philadelphia, PA 19111.
authors: H
authors: H
authors: Hoier
authors: H L
authors: HL
authors: Carrell
authors: J P
authors: JP
authors: Glusker
authors: C P
authors: CP
authors: Spears
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D016566:Organoselenium Compounds / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D000970:Antineoplastic Agents; D016566:Organoselenium Compounds; C081082:ethyl phenyl selenone