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Spectroscopic Evidence for Pseudorotation of Seven-Membered Chalcogen Rings in Solution [1]

Steudel, Ralf; Papavassiliou, Maria; Jensen, Detlef; Seppelt, Konrad

The 77Se NMR spectrum of l,2-Se2S5 exhibits one singlet at 1077.3 ppm indicating pseudorotation in solution; the same conclusion is reached from the solution Raman spectrum of S7 showing characteristic line broadening compared to the solid state spectrum.
Published in: Zeitschrift fĂĽr Naturforschung B, 10.1515/znb-1988-0220, De Gruyter