title: Novel (n + 1 + 1) cycloaddition reactions; the formation of cyclic tetraphosphonium dications with four linked phosphorus atoms and an organic backbone.
abstract: In the presence of SnCl(2), a novel cycloaddition of two moles of R'PCl(2) (R' = Et or Ph) to a diphosphane has been achieved, forming a cyclic dication with four linked phosphorus atoms and an organic backbone; two of these species have been characterised by single-crystal X-ray diffraction, and the mechanism of the reaction has been established.
authors: Chemistry Department, University of Durham, South Road, Durham, UK DH1 3LE.
authors: Alice J
authors: AJ
authors: Boyall
authors: Keith B
authors: KB
authors: Dillon
authors: Judith A K
authors: JA
authors: Howard
authors: Philippa K
authors: PK
authors: Monks
authors: Amber L
authors: AL
authors: Thompson
mesh_terms: D002412:Cations / Q000737:chemistry; D003461:Crystallography; D015394:Molecular Structure; D009943:Organophosphorus Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D010758:Phosphorus / Q000737:chemistry*; D017971:Tin Compounds / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002412:Cations; D009943:Organophosphorus Compounds; D017971:Tin Compounds; C023599:stannous chloride; D010758:Phosphorus