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Title: Materials Data on Nd4Fe4As4O3F by Materials Project

Abstract

Nd4Fe4As4O3F crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. Nd+2.75+ is bonded in a 4-coordinate geometry to four equivalent As3-, three O2-, and one F1- atom. There are two shorter (3.25 Å) and two longer (3.33 Å) Nd–As bond lengths. There are one shorter (2.32 Å) and two longer (2.39 Å) Nd–O bond lengths. The Nd–F bond length is 2.46 Å. There are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four equivalent As3- atoms to form a mixture of edge and corner-sharing FeAs4 tetrahedra. There are two shorter (2.62 Å) and two longer (2.63 Å) Fe–As bond lengths. In the second Fe2+ site, Fe2+ is bonded to four equivalent As3- atoms to form a mixture of edge and corner-sharing FeAs4 tetrahedra. All Fe–As bond lengths are 2.62 Å. As3- is bonded in a 8-coordinate geometry to four equivalent Nd+2.75+ and four Fe2+ atoms. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Nd+2.75+ atoms to form ONd4 tetrahedra that share corners with four equivalent FNd4 tetrahedra and edges with four equivalent ONd4 tetrahedra. In the second O2- site, O2- is bonded to fourmore » equivalent Nd+2.75+ atoms to form distorted ONd4 tetrahedra that share corners with four equivalent ONd4 tetrahedra, edges with two equivalent ONd4 tetrahedra, and edges with two equivalent FNd4 tetrahedra. F1- is bonded to four equivalent Nd+2.75+ atoms to form distorted FNd4 tetrahedra that share corners with four equivalent ONd4 tetrahedra and edges with four equivalent ONd4 tetrahedra.« less

Publication Date:
Other Number(s):
mp-1220250
DOE Contract Number:  
AC02-05CH11231; EDCBEE
Product Type:
Dataset
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)
Subject:
36 MATERIALS SCIENCE
Keywords:
crystal structure; Nd4Fe4As4O3F; As-F-Fe-Nd-O
OSTI Identifier:
1655633
DOI:
https://doi.org/10.17188/1655633

Citation Formats

The Materials Project. Materials Data on Nd4Fe4As4O3F by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1655633.
The Materials Project. Materials Data on Nd4Fe4As4O3F by Materials Project. United States. doi:https://doi.org/10.17188/1655633
The Materials Project. 2020. "Materials Data on Nd4Fe4As4O3F by Materials Project". United States. doi:https://doi.org/10.17188/1655633. https://www.osti.gov/servlets/purl/1655633. Pub date:Tue Jul 14 00:00:00 EDT 2020
@article{osti_1655633,
title = {Materials Data on Nd4Fe4As4O3F by Materials Project},
author = {The Materials Project},
abstractNote = {Nd4Fe4As4O3F crystallizes in the tetragonal I-42m space group. The structure is three-dimensional. Nd+2.75+ is bonded in a 4-coordinate geometry to four equivalent As3-, three O2-, and one F1- atom. There are two shorter (3.25 Å) and two longer (3.33 Å) Nd–As bond lengths. There are one shorter (2.32 Å) and two longer (2.39 Å) Nd–O bond lengths. The Nd–F bond length is 2.46 Å. There are two inequivalent Fe2+ sites. In the first Fe2+ site, Fe2+ is bonded to four equivalent As3- atoms to form a mixture of edge and corner-sharing FeAs4 tetrahedra. There are two shorter (2.62 Å) and two longer (2.63 Å) Fe–As bond lengths. In the second Fe2+ site, Fe2+ is bonded to four equivalent As3- atoms to form a mixture of edge and corner-sharing FeAs4 tetrahedra. All Fe–As bond lengths are 2.62 Å. As3- is bonded in a 8-coordinate geometry to four equivalent Nd+2.75+ and four Fe2+ atoms. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded to four equivalent Nd+2.75+ atoms to form ONd4 tetrahedra that share corners with four equivalent FNd4 tetrahedra and edges with four equivalent ONd4 tetrahedra. In the second O2- site, O2- is bonded to four equivalent Nd+2.75+ atoms to form distorted ONd4 tetrahedra that share corners with four equivalent ONd4 tetrahedra, edges with two equivalent ONd4 tetrahedra, and edges with two equivalent FNd4 tetrahedra. F1- is bonded to four equivalent Nd+2.75+ atoms to form distorted FNd4 tetrahedra that share corners with four equivalent ONd4 tetrahedra and edges with four equivalent ONd4 tetrahedra.},
doi = {10.17188/1655633},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}