Infrared flash kinetic spectroscopy of HCO

Publisher Website
Google Scholar
Abstract
The high resolution infrared spectrum of the CH stretching fundamental of the formyl radical (HCO) has been observed by means of infrared kinetic spectroscopy using 308 nm (XeCl) excimer laser flash photolysis of formaldehyde or acetaldehyde followed by diode or difference frequency laser probing of the transient absorption. The high resolution spectra obtained were assigned and fitted with rotational, spin–rotational, and centrifugal distortion constants. The ν1 band origin is 2434.48 cm−1. New ground-state constants are reported from a least-squares fit combining this ν1 data with previous microwave and FIR LMR measurements.