MILLIMETER-WAVE SPECTROSCOPY OF OSSO

Sulfur is the element with the largest number of known binary oxidesb and as such has attracted the curiosity of chemists and physicists for decades. In particular, the simpler ones are of great interest for diverse scientific disciplines like structural and theoretical chemistry, astrochemistry, atmospheric chemistry and molecular physics. Out of those, the simplest sulfur rich oxides and dioxides S2O and S2O2 have been studied spectroscopically to some extent in the pastc but still pose challenging problems to future gas-phase investigations. In the present study, the pure rotational spectrum of S2O2 has been investigated in the ground and ν3 states. In addition, ground state transitions of OSSO were observed. OSSO was produced in a radio frequency discharge through SO2. Experimental measurements have been supported by high-level CCSD(T) calculations. An extensive set of molecular parameters has been derived.