The Sulfur Hydrides and Halides

The preparation and properties of hydrogen trisulfide (58), tetrasulfide (59), and penta- and hexasulfide (60) were described by Feh r and Baudler 

The hydrogen polysulfides are yellow liquids, which from the tetra-sulfide upwards have no definite freezing points. They are labile with respect to change into sulfur and hydrogen sulfide, and decompose on contact with powdered quartz and glass, wood, or paper, or traces of basic substances the same applies to hydrogen disulfide. 

FeMr has in two recent reviews (55, 56) discussed preparative methods and properties of sulfur chain compounds studied by his group. The success of the work appears to be due to, beside a remarkable preparative skill, the use of Raman spectra for the identification and characterization of the different members of the series. 

The Raman spectra are consistent with unbranched structures of the sulfur chains they display characteristic S—S stretching and S—S—S bending frequencies but no frequencies corresponding to coordinate sulfur-sulfur bonds. 

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