High-Pressure Synthesis and Crystal Structure of the Sulfur-Richest Chromium Sulfide CrS3 Composed of Cr(III) and Disulfide Ions

Hiroshi Fukuoka; Naomi Kawata; Masahiro Furuta; Yuta Katakami; Sota Kimura; Kei Inumaru

doi:10.1021/acs.inorgchem.0c01690

High-Pressure Synthesis and Crystal Structure of the Sulfur-Richest Chromium Sulfide CrS₃ Composed of Cr(III) and Disulfide Ions

Inorg Chem. 2020 Sep 21;59(18):13320-13325. doi: 10.1021/acs.inorgchem.0c01690. Epub 2020 Sep 3.

Authors

Hiroshi Fukuoka¹, Naomi Kawata², Masahiro Furuta¹, Yuta Katakami¹, Sota Kimura¹, Kei Inumaru¹

Affiliations

¹ Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
² Natural Science Center for Basic Research and Development, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.

PMID: 32880450
DOI: 10.1021/acs.inorgchem.0c01690

Abstract

The new binary chromium sulfide CrS₃ has been synthesized by reaction of Cr₃S₄ and sulfur mixtures at 800 °C and 13 GPa. CrS₃ crystallizes in an orthorhombic unit cell with a = 4.6742(7) Å, b = 5.7315(8) Å, c = 10.603(2) Å, and V = 284.873(4) Å³. It has a novel structure composed of Cr₂S₁₀ edge-shared octahedral dimers, which share all of their corners to form a three-dimensional structure. All of the sulfur atoms form S₂^2- disulfide ions with a S-S distance of 2.063(5) or 2.068(8) Å. The structure of CrS₃ is a derivative of the crystal structure of marcasite FeS₂, in which one in three metal sites of the marcasite structure is vacant in the CrS₃ structure.