Bungu Peter N, Otto Stefanus
Acta Crystallogr Sect E Struct Rep Online. 2009 Feb 21;65(Pt 3):o560-1. doi: 10.1107/S1600536809005492.
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°.
标题化合物C(12)H(23)PSe是含有双环2-磷杂双环-[3.3.1]壬烷（VCH）单元的膦的首个结构。每个分子含有两个手性中心，它们可以是R,R-型或S,S-型，并且以对映体的中心对称外消旋混合物形式结晶。2.1360 (16) Å的P-Se键长对于这些化合物而言是典型的。托尔曼锥角（从P起2.28 Å）计算为163°，有效锥角（使用晶体学测定的P-Se键长）为168°。
