Second excited singlet state emission spectroscopy of thiocarbonyls. I. Thiophosgene

Abstract Well resolved emission spectra have been recorded after dye laser excitation of low-lying vibronic levels in the B ( 1 A 1 ) state of Cl 2 CS. The effects of substrate pressure, added SF 6 and excitation wavelength on the spectra are reported. A Franck-Condon analysis suggests that the excited state CS bond length is 0.5 A longer than in the ground state.