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Polythiazyl

Polythiazyl

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Polythiazyl (SN)x, was the first conducting inorganic polymer. In addition to being an electrical conductor
Electrical conductor
In physics and electrical engineering, a conductor is a material which contains movable electric charges. In metallic conductors such as copper or aluminum, the movable charged particles are electrons...

, it was also found to be a superconductor at very low temperatures (below 0.26 K).

Structure and bonding


Several resonance structures can be written:

Synthesis


Polythiazyl is synthesized from tetrasulfur tetranitride
Tetrasulfur tetranitride
Tetrasulfur tetranitride is an inorganic compound with the formula S4N4. This gold-poppy coloured solid is the most important binary sulfur nitride, which are compounds that contain only the elements sulfur and nitrogen. It is a precursor to many S-N compounds and has attracted wide interest for...

 (S4N4) via disulfur dinitride
Disulfur dinitride
Disulfur dinitride is the chemical compound S2N2 with a cyclic square planar structure.-Preparation and reactions:Passing gaseous S4N4 over silver metal wool at 250-300°C at low pressure yields cyclic S2N2...

 (S2N2), in the following way:
S4N4 + 8 Ag → 4 Ag2S + 2 N2

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

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