Infrared diode laser spectrum of the ngr;1band of CF2(Xtilde;thinsp;1A1)

摘要

The ngr;1fundamental band of difluorocarbene (CF2) in its ground electronic state has been investigated using diode laser absorption spectroscopy. SeveralRQbranches have been assigned and analyzed. The effects of asymmetry doubling become measurably large inQbranches with lowKand inRQ3provide a rigorous test of the assignment. Combined with microwave data for the ground state, the diode laser spectra yield v = 1 rotational constants and the first accurate measurement of the band center: ngr;1= 1225.0793(40) cmminus;1.