title: Versatile reagent Ph3 As(OTf)2: one-pot synthesis of [P7(AsPh3)3][OTf]3 from PCl3.
abstract: Compound Ph3 As(OTf)2 as a pentacoordinated As(V) Lewis acid readily forms dicationic Lewis acid/base adducts upon addition of various Lewis bases. It also represents a stronger chloride-abstracting agent than Me3 SiOTf and facilitates the reductive coupling of PCl3 in the presence of AsPh3 to the unprecedented cation [P7 (AsPh3 )3](3+) as triflate salt. This crystallographically characterized nortricyclane-type cation represents a P7 R3 -derivative with the most electron-withdrawing substituents, resulting in a pronounced effect on the structural parameters of the P7 core.
authors.affiliation: Fakultät Chemie und Lebensmittelchemie, Technische Universität Dresden, 01062 Dresden (Germany), Fax: (+49) 351-463-31478.
authors.forename: Maximilian
authors.initials: M
authors.lastname: Donath
authors.forename: Michael
authors.initials: M
authors.lastname: Bodensteiner
authors.forename: Jan J
authors.initials: JJ
authors.lastname: Weigand
mesh_terms: D001151:Arsenic / Q000737:chemistry*; D002384:Catalysis; D056831:Coordination Complexes / Q000737:chemistry*; D058116:Lewis Acids / Q000737:chemistry*; D008698:Mesylates / Q000737:chemistry*; D015394:Molecular Structure; D010758:Phosphorus / Q000737:chemistry*; D011073:Polyamines / Q000737:chemistry*; D000071228:Polyelectrolytes; D013237:Stereoisomerism
chemical_list: D001151:Arsenic; D056831:Coordination Complexes; D058116:Lewis Acids; D008698:Mesylates; D010758:Phosphorus; D011073:Polyamines; D000071228:Polyelectrolytes; C012077:trifluoromethanesulfonic acid
keywords: 1,2-dications; Lewis acids; nortricyclane; phosphorus; polycations