title: Synthesis and characterisation of four- and six-membered P-Se heterocycles.
abstract: The preparation, spectroscopic characterisation and crystal structures of [FcP(mu-Se)Se]2, [FcP(mu-Se2)Se]2 and [PhP(mu-Se2)Se]2 are reported. Crystallographic data reveal planar four-membered PSePSe and skewed six-membered P2Se4 rings, respectively, in all cases with trans arrangement of organic substituents and exo selenium atoms. Whilst stable at room temperature in solid state, NMR data suggest the six-membered rings of both the ferrocenyl and phenyl compounds decompose in the solution with loss of red selenium, forming PSe2PSe five-membered rings.
authors.affiliation: Department of Chemistry, University of St Andrews, Fife, UKKY16 9ST.
authors.forename: Sahrah
authors.initials: S
authors.lastname: Parveen
authors.forename: Petr
authors.initials: P
authors.lastname: Kilian
authors.forename: Alexandra M Z
authors.initials: AM
authors.lastname: Slawin
authors.forename: J Derek
authors.initials: JD
authors.lastname: Woollins