Description:
<jats:title>Abstract</jats:title>
<jats:p> Na<jats:sub>3</jats:sub>FeS<jats:sub>3</jats:sub> can be synthesized by the reaction of sodium carbonate with iron sponge at 1000 K under a stream of H<jats:sub>2</jats:sub>S. X-ray investigation on single crystals revealed its structure. The monoclinic unit cell contains four formula units, the space group is P2<jats:sub>1</jats:sub>/n. The iron and sulphur atoms form isolated [Fe<jats:sub>2</jats:sub>Se<jats:sub>6</jats:sub>]-anions, consisting of two edge-sharing tetrahedra, with which the sodium atoms build up a three-dimensional arrangement.</jats:p>