Report

CH5+: The Infrared Spectrum Observed

+ See all authors and affiliations

Science  02 Apr 1999:
Vol. 284, Issue 5411, pp. 135-137
DOI: 10.1126/science.284.5411.135

You are currently viewing the abstract.

View Full Text

Abstract

Protonated methane, CH5 +, has unusual vibrational and rotational behavior because its three nonequivalent equilibrium structures have nearly identical energies and its five protons scramble freely. Although many theoretical papers have been published on the quantum mechanics of the system, a better understanding requires spectral data. A complex, high-resolution infrared spectrum of CH5 + corresponding to the C–H stretching band in the 3.4-micrometer region is reported. Although no detailed assignment of the individual lines was made, comparison with other carbocation spectra strongly suggests that the transitions are due to CH5 +.

View Full Text

Related Content