title: A stable cation of a CSi3P five-membered ring with a weakly coordinating chloride anion.
abstract: Don't count on counterions: The cyclic five-membered CSi(3)P cation 1 is synthesized in the reaction of benzamidinato-stabilized chlorosilylene and methyl phosphaalkyne. The presence of four π electrons in 1 means it can be considered as a formal, heavier analogue of the cyclopentadienyl cation. Surprisingly the small counteranion (Cl(-)) does not contribute to the ring stability.
authors.affiliation: Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany.
authors.forename: Sakya S
authors.initials: SS
authors.lastname: Sen
authors.forename: Jakob
authors.initials: J
authors.lastname: Hey
authors.forename: Maria
authors.initials: M
authors.lastname: Eckhardt
authors.forename: Regine
authors.initials: R
authors.lastname: Herbst-Irmer
authors.forename: Eric
authors.initials: E
authors.lastname: Maedl
authors.forename: Ricardo A
authors.initials: RA
authors.lastname: Mata
authors.forename: Herbert W
authors.initials: HW
authors.lastname: Roesky
authors.forename: Manfred
authors.initials: M
authors.lastname: Scheer
authors.forename: Dietmar
authors.initials: D
authors.lastname: Stalke
mesh_terms: D000838:Anions / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D002712:Chlorides / Q000737:chemistry*; D003503:Cyclobutanes / Q000138:chemical synthesis / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009943:Organophosphorus Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D012821:Silanes / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D000838:Anions; D002412:Cations; D002712:Chlorides; D003503:Cyclobutanes; D009943:Organophosphorus Compounds; D012821:Silanes