Preparation of a conducting iodinated poly(sulphur nitride)

Abstract

Tetrathiatriazenium chloride (S₄N₃Cl), vaporised at 130 °C, when treated with sodium iodide supported on glass wool at 250 °C, followed by cooling of the exit gases to 10 °C gives a black iodinated poly(sulphur nitride)(S_aN_bI_c)_x with a ca. 3.0, b ca. 2.1, and c ca. 0.5. A lower temperature of condensation leads to a product contaminated with iodine. The conducting polymeric product is moisture sensitive and decomposes above 40 °C in vacuo(ca. 10^–6 Torr) to sulphur, tetrasulphur tetranitride, and iodine.