title: Evidence for C-H hydrogen bonding in salts of tert-butyl cation.
abstract: Environmentally sensitive: A combination of C-H anion hydrogen bonding and hyperconjugative charge delocalization explains the sensitivity of the IR spectrum of the tert-butyl cation to its anion (see high-resolution X-ray structure with a CHB(11)Cl(11)(-) counterion). The νCH vibration of the cation scales linearly with the basicity of carborane anions on the νNH scale. The same also holds for the C(6)H(7)(+) benzenium ion.
authors.affiliation: Center for S&P Block Chemistry, Department of Chemistry, University of California, Riverside, CA 92521, 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
mesh_terms: D001555:Benzene Derivatives / Q000737:chemistry*; D002073:Butanes / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D002412:Cations / Q000737:chemistry; D018360:Crystallography, X-Ray; D006859:Hydrogen / Q000737:chemistry; D006860:Hydrogen Bonding; D008968:Molecular Conformation; D012492:Salts / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D001555:Benzene Derivatives; D002073:Butanes; D002412:Cations; D012492:Salts; D002244:Carbon; D006859:Hydrogen