Potential energy surface of SOCl3 -

Sulfur trichloride monoxide anion (SOCl3-) is stable in the gas phase. The G2 estimate of the energy for its dissociation to thionyl chloride and chloride anion is 102.8 kJ mol-1. The potential energy surface for the reaction SOCl2 + Cl- → SOCl3- has just a single well corresponding to the product. Collision-induced dissociation observed using a flowing afterglow-tandem mass spectrometer indicates a D0(SOCl2−Cl-) bond energy of 85.4 ± 7.6 kJ mol-1, which is very similar to the previously determined bond energy D0(SCl2−Cl-) = 85 kJ mol-1