title: trans-(Ethene-1,2-di-yl)bis-(diphenyl-phosphine selenide).
abstract: In the title mol-ecule, C(26)H(22)P(2)Se(2), both P atoms have distorted tetra-hedral environments, resulting in effective cone angles of 177 and 174°. Inversion twinning was detected and refined to a ratio of 0.35:0.65. Weak inter-molecular C-H⋯Se inter-actions are observed.
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
authors.initials: Z
authors.lastname: Phasha
authors.forename: Sizwe
authors.initials: S
authors.lastname: Makhoba
authors.forename: Alfred
authors.initials: A
authors.lastname: Muller