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Title: Materials Data on Sm2Co18Si4C3 by Materials Project

Abstract

Sm2Co18Si4C3 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sm3+ is bonded in a T-shaped geometry to three C4- atoms. There are two shorter (2.60 Å) and one longer (2.63 Å) Sm–C bond lengths. There are five inequivalent Co+1.22+ sites. In the first Co+1.22+ site, Co+1.22+ is bonded in a single-bond geometry to two Si4- and one C4- atom. There are one shorter (2.35 Å) and one longer (2.38 Å) Co–Si bond lengths. The Co–C bond length is 1.83 Å. In the second Co+1.22+ site, Co+1.22+ is bonded in a single-bond geometry to two Si4- and one C4- atom. There are one shorter (2.36 Å) and one longer (2.37 Å) Co–Si bond lengths. The Co–C bond length is 1.83 Å. In the third Co+1.22+ site, Co+1.22+ is bonded in a water-like geometry to two Si4- atoms. There are one shorter (2.37 Å) and one longer (2.42 Å) Co–Si bond lengths. In the fourth Co+1.22+ site, Co+1.22+ is bonded in a single-bond geometry to two Si4- and one C4- atom. There are one shorter (2.34 Å) and one longer (2.41 Å) Co–Si bond lengths. The Co–C bond length is 1.83 Å. In the fifth Co+1.22+ site, Co+1.22+ ismore » bonded to four Si4- atoms to form distorted corner-sharing CoSi4 trigonal pyramids. There are a spread of Co–Si bond distances ranging from 2.58–2.62 Å. There are three inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 12-coordinate geometry to ten Co+1.22+ atoms. In the second Si4- site, Si4- is bonded in a 10-coordinate geometry to ten Co+1.22+ atoms. In the third Si4- site, Si4- is bonded in a 10-coordinate geometry to ten Co+1.22+ atoms. There are two inequivalent C4- sites. In the first C4- site, C4- is bonded to two equivalent Sm3+ and four Co+1.22+ atoms to form corner-sharing CSm2Co4 octahedra. The corner-sharing octahedra tilt angles range from 37–86°. In the second C4- site, C4- is bonded to two equivalent Sm3+ and four equivalent Co+1.22+ atoms to form corner-sharing CSm2Co4 octahedra. The corner-sharing octahedral tilt angles are 86°.« less

Authors:
Publication Date:
Other Number(s):
mp-1219302
DOE Contract Number:  
AC02-05CH11231; EDCBEE
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). LBNL Materials Project
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Collaborations:
MIT; UC Berkeley; Duke; U Louvain
Subject:
36 MATERIALS SCIENCE
Keywords:
crystal structure; Sm2Co18Si4C3; C-Co-Si-Sm
OSTI Identifier:
1691123
DOI:
https://doi.org/10.17188/1691123

Citation Formats

The Materials Project. Materials Data on Sm2Co18Si4C3 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1691123.
The Materials Project. Materials Data on Sm2Co18Si4C3 by Materials Project. United States. doi:https://doi.org/10.17188/1691123
The Materials Project. 2020. "Materials Data on Sm2Co18Si4C3 by Materials Project". United States. doi:https://doi.org/10.17188/1691123. https://www.osti.gov/servlets/purl/1691123. Pub date:Wed Apr 29 00:00:00 EDT 2020
@article{osti_1691123,
title = {Materials Data on Sm2Co18Si4C3 by Materials Project},
author = {The Materials Project},
abstractNote = {Sm2Co18Si4C3 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. Sm3+ is bonded in a T-shaped geometry to three C4- atoms. There are two shorter (2.60 Å) and one longer (2.63 Å) Sm–C bond lengths. There are five inequivalent Co+1.22+ sites. In the first Co+1.22+ site, Co+1.22+ is bonded in a single-bond geometry to two Si4- and one C4- atom. There are one shorter (2.35 Å) and one longer (2.38 Å) Co–Si bond lengths. The Co–C bond length is 1.83 Å. In the second Co+1.22+ site, Co+1.22+ is bonded in a single-bond geometry to two Si4- and one C4- atom. There are one shorter (2.36 Å) and one longer (2.37 Å) Co–Si bond lengths. The Co–C bond length is 1.83 Å. In the third Co+1.22+ site, Co+1.22+ is bonded in a water-like geometry to two Si4- atoms. There are one shorter (2.37 Å) and one longer (2.42 Å) Co–Si bond lengths. In the fourth Co+1.22+ site, Co+1.22+ is bonded in a single-bond geometry to two Si4- and one C4- atom. There are one shorter (2.34 Å) and one longer (2.41 Å) Co–Si bond lengths. The Co–C bond length is 1.83 Å. In the fifth Co+1.22+ site, Co+1.22+ is bonded to four Si4- atoms to form distorted corner-sharing CoSi4 trigonal pyramids. There are a spread of Co–Si bond distances ranging from 2.58–2.62 Å. There are three inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 12-coordinate geometry to ten Co+1.22+ atoms. In the second Si4- site, Si4- is bonded in a 10-coordinate geometry to ten Co+1.22+ atoms. In the third Si4- site, Si4- is bonded in a 10-coordinate geometry to ten Co+1.22+ atoms. There are two inequivalent C4- sites. In the first C4- site, C4- is bonded to two equivalent Sm3+ and four Co+1.22+ atoms to form corner-sharing CSm2Co4 octahedra. The corner-sharing octahedra tilt angles range from 37–86°. In the second C4- site, C4- is bonded to two equivalent Sm3+ and four equivalent Co+1.22+ atoms to form corner-sharing CSm2Co4 octahedra. The corner-sharing octahedral tilt angles are 86°.},
doi = {10.17188/1691123},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {4}
}