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Title: Materials Data on Gd3TaO7 by Materials Project

Abstract

Gd3TaO7 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded to seven O2- atoms to form distorted GdO7 pentagonal bipyramids that share corners with two TaO6 octahedra, a cornercorner with one GdO7 pentagonal bipyramid, an edgeedge with one TaO6 octahedra, and edges with four GdO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 46–49°. There are a spread of Gd–O bond distances ranging from 2.33–2.48 Å. In the second Gd3+ site, Gd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Gd–O bond distances ranging from 2.26–2.81 Å. In the third Gd3+ site, Gd3+ is bonded to seven O2- atoms to form distorted GdO7 pentagonal bipyramids that share corners with two TaO6 octahedra, a cornercorner with one GdO7 pentagonal bipyramid, edges with two TaO6 octahedra, and edges with four GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 44°. There are a spread of Gd–O bond distances ranging from 2.23–2.45 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners withmore » two equivalent TaO6 octahedra, corners with four GdO7 pentagonal bipyramids, and edges with four GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 34°. There are two shorter (1.99 Å) and four longer (2.01 Å) Ta–O bond lengths. In the second Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with two equivalent TaO6 octahedra, corners with four GdO7 pentagonal bipyramids, and edges with two equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 34°. There are a spread of Ta–O bond distances ranging from 1.98–2.05 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Gd3+ and two Ta5+ atoms. In the sixth O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of edge and corner-sharing OGd4 tetrahedra. In the seventh O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of edge and corner-sharing OGd4 tetrahedra.« less

Publication Date:
Other Number(s):
mp-779424
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; Gd3TaO7; Gd-O-Ta
OSTI Identifier:
1306391
DOI:
10.17188/1306391

Citation Formats

The Materials Project. Materials Data on Gd3TaO7 by Materials Project. United States: N. p., 2020. Web. doi:10.17188/1306391.
The Materials Project. Materials Data on Gd3TaO7 by Materials Project. United States. doi:10.17188/1306391.
The Materials Project. 2020. "Materials Data on Gd3TaO7 by Materials Project". United States. doi:10.17188/1306391. https://www.osti.gov/servlets/purl/1306391. Pub date:Wed Jul 15 00:00:00 EDT 2020
@article{osti_1306391,
title = {Materials Data on Gd3TaO7 by Materials Project},
author = {The Materials Project},
abstractNote = {Gd3TaO7 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are three inequivalent Gd3+ sites. In the first Gd3+ site, Gd3+ is bonded to seven O2- atoms to form distorted GdO7 pentagonal bipyramids that share corners with two TaO6 octahedra, a cornercorner with one GdO7 pentagonal bipyramid, an edgeedge with one TaO6 octahedra, and edges with four GdO7 pentagonal bipyramids. The corner-sharing octahedra tilt angles range from 46–49°. There are a spread of Gd–O bond distances ranging from 2.33–2.48 Å. In the second Gd3+ site, Gd3+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Gd–O bond distances ranging from 2.26–2.81 Å. In the third Gd3+ site, Gd3+ is bonded to seven O2- atoms to form distorted GdO7 pentagonal bipyramids that share corners with two TaO6 octahedra, a cornercorner with one GdO7 pentagonal bipyramid, edges with two TaO6 octahedra, and edges with four GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 44°. There are a spread of Gd–O bond distances ranging from 2.23–2.45 Å. There are two inequivalent Ta5+ sites. In the first Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with two equivalent TaO6 octahedra, corners with four GdO7 pentagonal bipyramids, and edges with four GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 34°. There are two shorter (1.99 Å) and four longer (2.01 Å) Ta–O bond lengths. In the second Ta5+ site, Ta5+ is bonded to six O2- atoms to form TaO6 octahedra that share corners with two equivalent TaO6 octahedra, corners with four GdO7 pentagonal bipyramids, and edges with two equivalent GdO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 34°. There are a spread of Ta–O bond distances ranging from 1.98–2.05 Å. There are seven inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the third O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to three Gd3+ and one Ta5+ atom. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to one Gd3+ and two Ta5+ atoms. In the sixth O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of edge and corner-sharing OGd4 tetrahedra. In the seventh O2- site, O2- is bonded to four Gd3+ atoms to form a mixture of edge and corner-sharing OGd4 tetrahedra.},
doi = {10.17188/1306391},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {7}
}

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