Polythiazyl

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OtherNames = polythiazyl poly(sulfur nitride)
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Formula = (SN)_x
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Appearance = bronze colour, metallic lustreGreenwood&Earnshaw pp. 725-727]
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Polythiazyl (polymeric sulfur nitride), (SN)_"x", was the first conducting inorganic polymerFact|date=September 2008. In addition to being an electrical conductor, it was also found to be a superconductor at very low temperatures (below 0.26 K) [ cite journal | title = Polysulfur nitride - a metallic, superconducting polymer | author = M. M. Labes, P. Love, and L. F. Nichols | journal = Chem. Rev. | year = 1979 | volume = 79 | issue = 1 | pages = 1-15 | doi = 10.1021/cr60317a002 ] .

ynthesis

Polythiazyl is synthesized from tetrasulfur tetranitride (S₄N₄) via disulfur dinitride (S₂N₂), in the following way:

:S₄N₄ + 8Ag → Ag₂S + 2N₂

:S₄N₄ (w/ Ag₂S catalyst) → 2S₂N₂ (w/ 77K cold finger) → S₂N₂

:S₂N₂ (@ 0°C, sublimes to surface) → thermal polymerization → (SN)_x

References