Fig. 1.
Calculated reaction profiles for the gas-phase reactions of SOn (n = 1, 2, 3) with H2S, (black), H2S–H2O (magenta) and H2S–H2SO4 (green), respectively. Relative energies (kcal mol−1) of minima and transition-state structures are calculated at the CCSD(T)/aug-cc-pVTZ//M06-2X/aug-cc-pVTZ level of theory. Note that the SO reactions have been calculated at the uCCSD(T)/aug-cc-pVTZ//uM06-2X/aug-cc-pVTZ level.