title: 2-Isobutyl-2-phosphabicyclo-[3.3.1]nonane 2-selenide.
abstract: The title compound, C(12)H(23)PSe, represents the first structure of a phosphine containing the bicyclic 2-phospha-bicyclo-[3.3.1]nonane (VCH) unit. It contains two chiral centres per mol-ecule which can be either R,R- or S,S and crystallizes as a centrosymmetric, racemic micture of the enanti-omers. The P-Se bond distance of 2.1360 (16) Å is typical for these compounds. The Tolman cone angle (2.28 Å from P) was calculated as 163°, and the effective cone angle (using the crystallographically determined P-Se bond distance) is 168°.
authors.forename: Peter N
authors.initials: PN
authors.lastname: Bungu
authors.forename: Stefanus
authors.initials: S
authors.lastname: Otto