Abstract
The group IIB metal fluorosulfates of the type M(SO3F)2, with M = Zn, Cd, or Hg, are conveniently obtained in a simple one-step procedure: the metal oxidation in a mixture of bis(fluorosulfuryl)peroxide and fluorosulfuric acid. The resulting white polymeric solids are all excellent Raman scatterers and provide the first consistent set of Raman data for this structural type. Above 400 cm−1 six sharp Raman lines indicate retention of C3v symmetry for the tridentate fluorosulfate groups, with coordination through oxygen evidenced by frequency shifts, in particular in the stretching range and the rigid polymeric structure causing a different band intensity pattern than the one found for ionic fluorosulfates. Bands below 300 cm−1 are observed as well and some are tentatively assigned to skeletal metal–oxygen vibrations.
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