Knowledge Bank

The previous $work1$ on the ultraviolet and infrared spectra of so-called sulfur monoxide has been interpreted on the basis of a molecule with the formula of $S2O2$. An examination of the microwave spectrum shows conclusively that the major component of so-called sulfur monoxide is in reality disulfur monoxide, $S2O$. The low J valued microwave transitions of $S2O$ consist of R branch lines (a-dipole) and Q branch lines (b-dipole). The values of B-C obtained from the a-dipole and b-dipole lines agree within experimental error. The rotational constants for the $S232,32O16$ species are $A-41,914.3;B=5,059.1;C=4,507.0$ mc/s. These data are consistent with an $S-S-O$ structure and angle of about $120\circ$. A new interpretation will be given of the ultraviolet and infrared spectra of $S2O$.