Fourier-transform infrared observation of the ν4 stretching mode of C5 in Ar at 10 K

Publisher Website
Google Scholar
Abstract
The vibrational spectrum of the C5 carbon cluster produced by trapping the products of the vacuum‐ultraviolet photolysis of 2‐methyl‐1,3‐butadiene, or the high‐temperature evaporation of graphite in Ar at ∼10 K, has been analyzed by Fourier‐transform spectroscopy and has resulted in the identification for the first time of the second infrared‐active stretching mode, ν4(σu), at 1446.6 cm−1. The assignment is supported by extensive 13C isotopic data, and is in good agreement with the results of ab initio calculations.