title: (4-Ethenylphen-yl)diphenyl-phosphine selenide.
abstract: In the title mol-ecule, C(10)H(17)PSe, the P atom has a distorted tetra-hedral environment resulting in an effective cone angle of 165°. The benzene ring makes dihedral angles of 70.04 (8) and 77.28 (8)° with the phenyl rings, while the dihedral angle between the phenyl rings is 62.95 (8)°. In the crystal, mol-ecules are linked by C-H⋯π inter-actions.
authors.affiliation: Research Center for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg (APK Campus), PO Box 524, Auckland Park, Johannesburg, 2006,  South Africa.
authors.forename: Zanele H
authors.initials: ZH
authors.lastname: Phasha
authors.forename: Sizwe
authors.initials: S
authors.lastname: Makhoba
authors.forename: Alfred
authors.initials: A
authors.lastname: Muller