The infrared spectra, over the frequency range 250 to 1400 cm−1, of fourteen metal bisfluorosulfates are tabulated and discussed. The fluorosulfates of Fe(II), Co(II), Ni(II), Zn(II), Cd(II), Hg(II), Mg(II), and Ca(II) give simple spectra which are assigned to the fundamental modes of vibration of fluorosulfate groups of C3v symmetry. The spectra of the Mn(II), Cu(II), Ba(II), Pb(II), and Sn(II) compounds are assigned to fluorosulfate groups of reduced symmetry. The spectrum of Sr(II) fluorosulfate suggests the presence of at least two non-equivalent fluorosulfate environments in this compound. The general features of the infrared spectra of compounds containing tridentate coordinated fluorosulfate groups are summarized.

Die IR‐Spektren (250‐1400 cm‐1) der Verbindungen M(SO3‐F)2 mit M: Mg, Ca, Sr, Ba, Cd, Hg, Sn, Pb, Mn, Fe, Ni, Cu, Zn werden untersucht und diskutiert.