“…When compared with the neutral molecule, SF 2 + has, however, received significantly less attention. Nevertheless, the first adiabatic ionization energy ͑AIE͒ of SF 2 has been measured or derived from electron-impact mass-spectrometric, 17,18 photoionization mass-spectrometric, 19 photoelectron 20 ͑PE͒, and resonance-enhanced multiphoton ionization 7 ͑REMPI͒ studies. In addition, the first AIE of SF 2 has been computed at the G2 level of theory in two separate computational studies, both focusing on the thermochemistry of SF n series ͑from n = 1 up to n =6͒ and their ions 21,22 in relation to plasma chemistry.…”