title: Dicyclo-hex-yl(4-isopropyl-phen-yl)phosphane selenide.
abstract: In the title compund, C(21)H(33)PSe, the Se=P bond is part of a distorted tetra-hedral environment on the P atom. Both cyclo-hexyl groups adopt chair conformations. A cone angle of 170° was calculated using an adaptation of the Tolman model. Inter-molecular C-H⋯Se and C-H⋯Cg contacts are observed (Cg is the centroid of the benzene ring).
authors.affiliation: Research Center for Synthesis and Catalysis, Department of Chemistry, University of Johannesburg, PO Box 524, Auckland Park, Johannesburg 2006,  South Africa.
authors.forename: Sizwe
authors.initials: S
authors.lastname: Makhoba
authors.forename: Alfred
authors.initials: A
authors.lastname: Muller
authors.forename: Zanele
authors.initials: Z
authors.lastname: Phasha