Spectroscopic Observation of the Formyl Cation in a Condensed Phase
- 2 May 1997
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 276 (5313) , 776-779
- https://doi.org/10.1126/science.276.5313.776
Abstract
The formyl cation, HCO+, has long been believed to be an important intermediate in the chemistry of carbon monoxide (CO) in acidic environments, but its spectroscopic observation in solution has been elusive. This species was generated by the reaction of CO with the liquid superacid hydrofluoric acid–antimony pentafluoride (HF-SbF5) under pressure and was observed by nuclear magnetic resonance and infrared spectroscopy. Equilibria between CO in the gas phase, CO dissolved in HF-SbF5, the SbF5 adduct of formyl fluoride, and HCO+associated with several equilibrating anions of the type [SbxF5x+1]−are proposed to describe the system.Keywords
This publication has 35 references indexed in Scilit:
- Bis(carbonyl)gold(I) undecafluorodiantimonate(V), [Au(CO)2][Sb2F11]: synthesis, vibrational, and carbon-13 NMR study and the molecular structure of bis(acetonitrile)gold(I) hexafluoroantimonate(V), [Au(NCCH3)2][SbF6]Journal of the American Chemical Society, 1992
- Tracking the limits of superacidityReviews of Chemical Intermediates, 1988
- Aromatic substitution. 52. Superacid-catalyzed carbonylation of aromatics with carbon monoxideThe Journal of Organic Chemistry, 1985
- Thermodynamic behavior of alkanes in superacid mediaChemical Reviews, 1982
- Electrophilic reactions at single bonds. XII. Hydrogen-deuterium exchange, protolysis (deuterolysis), and oligocondensation of alkanes with superacidsJournal of the American Chemical Society, 1973
- Carbocations and Electrophilic ReactionsAngewandte Chemie International Edition in English, 1973
- Fluorosulfuric acid and related superacid mediaAccounts of Chemical Research, 1968
- Stable Carbonium Ions. LIV. Protonation of and Hydride Ion Abstraction from Cycloalkanes and Polycycloalkanes in Fluorosulfonic Acid-Antimony PentafluorideJournal of the American Chemical Society, 1968
- Formylation with Formyl Fluoride: A New Aldehyde Synthesis and Formylation Method1Journal of the American Chemical Society, 1960
- BuchbesprechungenJuristische Rundschau, 1949