Materials Data on Ir2S3 by Materials Project
Ir2S3 is Corundum structured and crystallizes in the trigonal R-3c space group. The structure is three-dimensional. Ir3+ is bonded to six equivalent S2- atoms to form a mixture of edge, corner, and face-sharing IrS6 octahedra. The corner-sharing octahedra tilt angles range from 47–62°. There are three shorter (2.37 Å) and three longer (2.41 Å) Ir–S bond lengths. S2- is bonded to four equivalent Ir3+ atoms to form a mixture of distorted edge and corner-sharing SIr4 trigonal pyramids.
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