polysulfane
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A polysulfane is a chemical compound of formula , where n > 1 (although disulfane () is sometimes excluded). Compounds containing 2 – 8 sulfur atoms have been isolated, longer chain compounds have been detected, but only in solution. is colourless, higher members are yellow with the colour increasing with the sulfur content. In the chemical literature the term polysulfanes is sometimes used for compounds containing , e.g. organic polysulfanes .
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3 sectionsContents
- Structures
- Reactions and properties
- References
A polysulfane is a chemical compound of formula {{chem2|H2S_{n}|auto=1}}, where n > 1 (although disulfane () is sometimes excluded). Compounds containing 2 – 8 sulfur atoms have been isolated, longer chain compounds have been detected, but only in solution. is colourless, higher members are yellow with the colour increasing with the sulfur content. In the chemical literature the term polysulfanes is sometimes used for compounds containing {{chem2|\s(S)_{n}\s}}, e.g. organic polysulfanes {{chem2|R^{1}\s(S)_{n}\sR^{2}|}}.
==Structures== Polysulfanes consist of unbranched chains of sulfur atoms terminated with hydrogen atoms. The branched isomer of tetrasulfane , in which the fourth sulfur is bonded to the central sulfur, would be described as trithiosulfurous acid, . Computations suggests that it is less stable than the linear isomer . The S-S-S angles approach 90° in trisulfane and higher polysulfanes.