title: Dialkyl chloronium ions.
abstract: The carborane acid H(CHB(11)Cl(11)) reacts with chloroalkanes RCl to give isolable dialkylchloronium ion salts, [R(2)Cl][CHB(11)Cl(11)], that are stable at room temperature. X-ray crystal structures have been obtained for R = CH(3) and CH(2)CH(3), revealing bent cation structures with C-Cl-C angles of 101.5 and 105.8 degrees , respectively. The dimethylchloronium ion salt loses CH(3)Cl upon heating and forms sublimable CH(3)(CHB(11)Cl(11)), providing a clean synthetic route to an extremely potent electrophilic methylating agent. IR spectra of all species have been interpreted, including the C-Cl stretch in CH(3)-ClCHB(11)Cl(10).
authors.affiliation: Department of Chemistry, University of California, Riverside, California 92521-0403, USA. evgeniis@ucr.edu
authors.forename: Evgenii S
authors.initials: ES
authors.lastname: Stoyanov
authors.forename: Irina V
authors.initials: IV
authors.lastname: Stoyanova
authors.forename: Fook S
authors.initials: FS
authors.lastname: Tham
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Reed