The calculations of quenching rate coefficients of O2(b1g+, v) in collisions with O2, N2, CO, CO2 molecules

► The quenching rate coefficients of singlet O2 in collisions with O2, N2, CO, CO2 are calculated. ► Quantum-chemical Rosen-Zener approximation is applied in the calculation. ► Electronic-vibrational and vibrational-vibrational energy transfer processes are considered. ► Main mechanisms of the quenching are studied.