Synthesis, chemical properties, and U.V. spectra of thio-thionyl fluoride and difluorodisulphane

Author:

Brown RD,Pez GP

Abstract

The preparation of difluorodisulphane, FSSF, by the silver fluoride/sulphur reaction is described. Difluorodisulphane is unstable at room temperature and rearranges spontaneously into thio-thionyl fluoride, SSF2. The largest observed first-order half-life time of FSSP gas was 4.7 hr at 21.8 � 0.3�. The decomposition of FSSF is catalysed by hydrogen fluoride and boron trifluoride. Chemical reactions of the isomers with AgF2, Cl2, BCl3, S2Cl2, acetone, benzoic acid, Pyrex, and quartz were studied. The absorption spectra of gaseous FSSF and SSF2 were recorded in the range of 10000 to 53000 cm-1. Medium to high intensity continua were noted with maxima for FSSF at 50200�250 and 41400�250 cm-1 and for SSF2 at 53000�500, 41400�250, and 33800�400 cm-1.

Publisher

CSIRO Publishing

Subject

General Chemistry

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