Materials Data on Bi4(TeS)3 by Materials Project

Abstract

Bi4(TeS)3 is MAX Phase-like structured and crystallizes in the trigonal R3m space group. The structure is two-dimensional and consists of three Bi4(TeS)3 sheets oriented in the (0, 0, 1) direction. there are four inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded to three equivalent Te2- and three equivalent S2- atoms to form a mixture of edge and corner-sharing BiTe3S3 octahedra. The corner-sharing octahedral tilt angles are 1°. All Bi–Te bond lengths are 3.04 Å. All Bi–S bond lengths are 3.04 Å. In the second Bi3+ site, Bi3+ is bonded to three equivalent Te2- and three equivalent S2- atoms to form BiTe3S3 octahedra that share corners with three equivalent BiS6 octahedra and edges with nine BiTe3S3 octahedra. The corner-sharing octahedral tilt angles are 0°. All Bi–Te bond lengths are 3.04 Å. All Bi–S bond lengths are 3.03 Å. In the third Bi3+ site, Bi3+ is bonded to six S2- atoms to form a mixture of edge and corner-sharing BiS6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are three shorter (2.79 Å) and three longer (3.02 Å) Bi–S bond lengths. In the fourth Bi3+ site, Bi3+ is bonded to three equivalent Te2- and three equivalent S2- atoms to form a mixture of edge and corner-sharing BiTe3S3 octahedra. The corner-sharing octahedral tilt angles are 1°. All Bi–Te bond lengths are 3.05 Å. All Bi–S bond lengths are 3.00 Å. There are three inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 3-coordinate geometry to three equivalent Bi3+ atoms. In the second Te2- site, Te2- is bonded in a 6-coordinate geometry to three equivalent Bi3+ and three equivalent S2- atoms. All Te–S bond lengths are 4.01 Å. In the third Te2- site, Te2- is bonded in a 3-coordinate geometry to three equivalent Bi3+ atoms. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded to six Bi3+ atoms to form edge-sharing SBi6 octahedra. In the second S2- site, S2- is bonded to six Bi3+ atoms to form edge-sharing SBi6 octahedra. In the third S2- site, S2- is bonded in a 3-coordinate geometry to three equivalent Bi3+ and three equivalent Te2- atoms.