Energy transfer in the quenching of singlet molecular oxygen - II. The rates of formation and quenching of vibrationally excited molecules

The absolute efficiencies for the vibrational excitation of molecules which quench singlet molecular oxygen have been determined from measurements of their infrared chemiluminescence and kinetics of relaxation. The systems studied were NO and CO with O2(1∆g) and NO, CO, HCl, DCl, H2O, D2O, CO2, N2O, NH3 and C2H2 with O2(1∑+g). Rate coefficients for the vibrational relaxation of a number of these molecules by molecular oxygen were also determined.