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Title: Materials Data on CaMn2O4 by Materials Project

Abstract

CaMn2O4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ca–O bond distances ranging from 2.28–2.67 Å. In the second Ca2+ site, Ca2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Ca–O bond distances ranging from 2.27–2.38 Å. There are four inequivalent Mn3+ sites. In the first Mn3+ site, Mn3+ is bonded to five O2- atoms to form MnO5 square pyramids that share corners with four MnO6 octahedra and edges with two equivalent MnO5 square pyramids. The corner-sharing octahedra tilt angles range from 52–58°. There are a spread of Mn–O bond distances ranging from 1.95–2.14 Å. In the second Mn3+ site, Mn3+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with four MnO5 square pyramids and edges with four MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.98–2.31 Å. In the third Mn3+ site, Mn3+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with four MnO5 square pyramidsmore » and edges with four MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.98–2.26 Å. In the fourth Mn3+ site, Mn3+ is bonded to five O2- atoms to form MnO5 square pyramids that share corners with four MnO6 octahedra and edges with two equivalent MnO5 square pyramids. The corner-sharing octahedra tilt angles range from 50–60°. There are a spread of Mn–O bond distances ranging from 1.94–2.14 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to three Mn3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Ca2+ and three Mn3+ atoms. In the third O2- site, O2- is bonded to one Ca2+ and three Mn3+ atoms to form distorted OCaMn3 tetrahedra that share corners with two equivalent OCa2Mn3 square pyramids, corners with two equivalent OCaMn3 tetrahedra, and edges with three OCa2Mn3 square pyramids. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to one Ca2+ and three Mn3+ atoms. In the fifth O2- site, O2- is bonded in a rectangular see-saw-like geometry to two equivalent Ca2+ and two equivalent Mn3+ atoms. In the sixth O2- site, O2- is bonded to two equivalent Ca2+ and three Mn3+ atoms to form distorted OCa2Mn3 square pyramids that share corners with two equivalent OCaMn3 tetrahedra, edges with four OCa2Mn3 square pyramids, and an edgeedge with one OCaMn3 tetrahedra. In the seventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to two equivalent Ca2+ and two equivalent Mn3+ atoms. In the eighth O2- site, O2- is bonded to two equivalent Ca2+ and three Mn3+ atoms to form distorted OCa2Mn3 square pyramids that share edges with four OCa2Mn3 square pyramids and edges with two equivalent OCaMn3 tetrahedra.« less

Authors:
Publication Date:
Other Number(s):
mvc-12576
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; CaMn2O4; Ca-Mn-O
OSTI Identifier:
1318575
DOI:
https://doi.org/10.17188/1318575

Citation Formats

The Materials Project. Materials Data on CaMn2O4 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1318575.
The Materials Project. Materials Data on CaMn2O4 by Materials Project. United States. doi:https://doi.org/10.17188/1318575
The Materials Project. 2020. "Materials Data on CaMn2O4 by Materials Project". United States. doi:https://doi.org/10.17188/1318575. https://www.osti.gov/servlets/purl/1318575. Pub date:Wed Jul 22 00:00:00 EDT 2020
@article{osti_1318575,
title = {Materials Data on CaMn2O4 by Materials Project},
author = {The Materials Project},
abstractNote = {CaMn2O4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are two inequivalent Ca2+ sites. In the first Ca2+ site, Ca2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Ca–O bond distances ranging from 2.28–2.67 Å. In the second Ca2+ site, Ca2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Ca–O bond distances ranging from 2.27–2.38 Å. There are four inequivalent Mn3+ sites. In the first Mn3+ site, Mn3+ is bonded to five O2- atoms to form MnO5 square pyramids that share corners with four MnO6 octahedra and edges with two equivalent MnO5 square pyramids. The corner-sharing octahedra tilt angles range from 52–58°. There are a spread of Mn–O bond distances ranging from 1.95–2.14 Å. In the second Mn3+ site, Mn3+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with four MnO5 square pyramids and edges with four MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.98–2.31 Å. In the third Mn3+ site, Mn3+ is bonded to six O2- atoms to form distorted MnO6 octahedra that share corners with four MnO5 square pyramids and edges with four MnO6 octahedra. There are a spread of Mn–O bond distances ranging from 1.98–2.26 Å. In the fourth Mn3+ site, Mn3+ is bonded to five O2- atoms to form MnO5 square pyramids that share corners with four MnO6 octahedra and edges with two equivalent MnO5 square pyramids. The corner-sharing octahedra tilt angles range from 50–60°. There are a spread of Mn–O bond distances ranging from 1.94–2.14 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted trigonal planar geometry to three Mn3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to one Ca2+ and three Mn3+ atoms. In the third O2- site, O2- is bonded to one Ca2+ and three Mn3+ atoms to form distorted OCaMn3 tetrahedra that share corners with two equivalent OCa2Mn3 square pyramids, corners with two equivalent OCaMn3 tetrahedra, and edges with three OCa2Mn3 square pyramids. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to one Ca2+ and three Mn3+ atoms. In the fifth O2- site, O2- is bonded in a rectangular see-saw-like geometry to two equivalent Ca2+ and two equivalent Mn3+ atoms. In the sixth O2- site, O2- is bonded to two equivalent Ca2+ and three Mn3+ atoms to form distorted OCa2Mn3 square pyramids that share corners with two equivalent OCaMn3 tetrahedra, edges with four OCa2Mn3 square pyramids, and an edgeedge with one OCaMn3 tetrahedra. In the seventh O2- site, O2- is bonded in a rectangular see-saw-like geometry to two equivalent Ca2+ and two equivalent Mn3+ atoms. In the eighth O2- site, O2- is bonded to two equivalent Ca2+ and three Mn3+ atoms to form distorted OCa2Mn3 square pyramids that share edges with four OCa2Mn3 square pyramids and edges with two equivalent OCaMn3 tetrahedra.},
doi = {10.17188/1318575},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}