THE SOLEIL VIEW ON SULFUR RICH OXIDES: THE _3 MODE OF S2O REVISITED

Abstract

In the course of our recent study of the $nu_2$ bending mode of S$_2$O (Martin-Drumel el al.; see Talk P1190), the S-S stretching mode $nu_3$ located at 679cm$^{-1}$ and first studied by Lindenmayer textit{et al.} in 1986 (textit{J. Mol. Spectrosc.} textbf{119}, 56) has been re-investigated at the French national synchrotron facility SOLEIL using Fourier-transform far-infrared spectroscopy. In addition to the vibrational fundamental, evidence for at least one more hot band, most likely $nu_3+nu_2-nu_2$, was found. Complementary submillimeter wave measurements of the pure rotational spectrum in the $v_3=1$ state were also performed