title: 1,2-Bis(diphenylphosphino)benzene and two related mono-methiodides, [o-C(6)H(4)(PR(2))(PR(2)Me)]I (R = Ph or Me).
abstract: The structures of the compounds 1,2-bis(diphenylphosphino)benzene, C(30)H(24)P(2), [2-(diphenylphosphino)phenyl]methyldiphenylphosphonium iodide, C(31)H(27)P(2)(+).I(-), and [2-(dimethylphosphino)phenyl]trimethylphosphonium iodide, C(11)H(19)P(2)(+).I(-), show that quaternization only occurs at one P centre and results in significantly shorter P-C bonds and larger C-P-C angles, consistent with the formal oxidation from P(III) to P(V).
authors.affiliation: School of Chemistry, University of Southampton, Southampton SO17 1BJ, England.
authors.forename: William
authors.initials: W
authors.lastname: Levason
authors.forename: Gillian
authors.initials: G
authors.lastname: Reid
authors.forename: Michael
authors.initials: M
authors.lastname: Webster