Materials Data on Co2(SnSe)3 by Materials Project
Co2(SnSe)3 is Hausmannite-derived structured and crystallizes in the trigonal R-3 space group. The structure is three-dimensional. there are two inequivalent Co sites. In the first Co site, Co is bonded to three Sn and three Se atoms to form CoSn3Se3 octahedra that share corners with six CoSn3Se3 octahedra, corners with four equivalent SnCo2Se2 tetrahedra, and corners with four equivalent SeCo2Sn2 tetrahedra. The corner-sharing octahedra tilt angles range from 51–56°. There are a spread of Co–Sn bond distances ranging from 2.51–2.54 Å. There are one shorter (2.39 Å) and two longer (2.42 Å) Co–Se bond lengths. In the second Co site, Co is bonded to three equivalent Sn and three equivalent Se atoms to form corner-sharing CoSn3Se3 octahedra. The corner-sharing octahedra tilt angles range from 51–56°. All Co–Sn bond lengths are 2.52 Å. All Co–Se bond lengths are 2.40 Å. There are two inequivalent Sn sites. In the first Sn site, Sn is bonded to two Co and two equivalent Se atoms to form distorted SnCo2Se2 tetrahedra that share corners with four equivalent CoSn3Se3 octahedra, corners with two equivalent SnCo2Se2 tetrahedra, corners with four equivalent SeCo2Sn2 tetrahedra, and an edgeedge with one SnCo2Se2 tetrahedra. The corner-sharing octahedra tilt angles range from 69–74°. There are one shorter (2.75 Å) and one longer (2.94 Å) Sn–Se bond lengths. In the second Sn site, Sn is bonded in a 4-coordinate geometry to two equivalent Co and two equivalent Se atoms. There are one shorter (2.76 Å) and one longer (2.93 Å) Sn–Se bond lengths. There are two inequivalent Se sites. In the first Se site, Se is bonded in a 4-coordinate geometry to two equivalent Co and two equivalent Sn atoms. In the second Se site, Se is bonded to two Co and two equivalent Sn atoms to form distorted SeCo2Sn2 tetrahedra that share corners with four equivalent CoSn3Se3 octahedra, corners with two equivalent SeCo2Sn2 tetrahedra, corners with four equivalent SnCo2Se2 tetrahedra, and an edgeedge with one SeCo2Sn2 tetrahedra. The corner-sharing octahedra tilt angles range from 68–75°.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Contributing Organization:
- MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231; EDCBEE
- OSTI ID:
- 1275545
- Report Number(s):
- mp-570152
- Resource Relation:
- Related Information: https://materialsproject.org/citing
- Country of Publication:
- United States
- Language:
- English
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