W. MCNAVAGE AND H. L. DAI, Department of Chemistry, The University of Pennsylvania, PA 19104.
The CN stretch of the OCCN radical was observed for the first time at 2093 cm-1. The method of detection was by nanosecond Fourier-transform infrared emission spectroscopy. The radical was produced through UV photodissociation( =193 nm) of carbonyl cyanide, CO(CN)2 and pivaloyl cyanide, CO(CN)(CH3)3 which leaves the radical with sufficient internal excitation. Infrared and near-infrared emission from all vibrationally excited species was detected. Pressure dependence, rotational band contour analysis and ab initio calculations all aided in assignment.