DOI: 10.17188/1654381
title: Materials Data on Sr2La4Mg2RuO12 by Materials Project

description: Sr2Mg2La4RuO12 is (La,Ba)CuO4-derived structured and crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Sr2+ sites. In the first Sr2+ site, Sr2+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.35–2.81 Å. In the second Sr2+ site, Sr2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Sr–O bond distances ranging from 2.42–2.82 Å. There are two inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 1°. There are a spread of Mg–O bond distances ranging from 1.97–2.26 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 1.97–2.25 Å. There are four inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.32–3.04 Å. In the second La3+ site, La3+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of La–O bond distances ranging from 2.47–2.84 Å. In the third La3+ site, La3+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.32–3.03 Å. In the fourth La3+ site, La3+ is bonded in a 1-coordinate geometry to nine O2- atoms. There are a spread of La–O bond distances ranging from 2.32–3.02 Å. Ru4+ is bonded to six O2- atoms to form corner-sharing RuO6 octahedra. The corner-sharing octahedral tilt angles are 1°. There are a spread of Ru–O bond distances ranging from 1.97–2.11 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded to two equivalent Mg2+ and four La3+ atoms to form a mixture of distorted corner, edge, and face-sharing OLa4Mg2 octahedra. The corner-sharing octahedra tilt angles range from 1–53°. In the second O2- site, O2- is bonded in a 5-coordinate geometry to one Sr2+, one Mg2+, and three equivalent La3+ atoms. In the third O2- site, O2- is bonded to two equivalent Mg2+ and four La3+ atoms to form a mixture of distorted corner, edge, and face-sharing OLa4Mg2 octahedra. The corner-sharing octahedral tilt angles are 0°. In the fourth O2- site, O2- is bonded in a 6-coordinate geometry to one Mg2+ and five La3+ atoms. In the fifth O2- site, O2- is bonded in a 6-coordinate geometry to one Mg2+ and five equivalent La3+ atoms. In the sixth O2- site, O2- is bonded to four equivalent Sr2+, one La3+, and one Ru4+ atom to form distorted OSr4LaRu octahedra that share corners with seventeen OLa4Mg2 octahedra, edges with four equivalent OSr4LaRu octahedra, and faces with four equivalent OSr4Ru2 octahedra. The corner-sharing octahedra tilt angles range from 0–55°. In the seventh O2- site, O2- is bonded in a 6-coordinate geometry to one Mg2+ and five La3+ atoms. In the eighth O2- site, O2- is bonded to four Sr2+ and two equivalent Ru4+ atoms to form distorted OSr4Ru2 octahedra that share corners with twelve OSr5Ru octahedra, edges with two equivalent OSr4Ru2 octahedra, and faces with eight OSr4Ru2 octahedra. The corner-sharing octahedra tilt angles range from 1–56°. In the ninth O2- site, O2- is bonded to five equivalent Sr2+ and one Ru4+ atom to form distorted OSr5Ru octahedra that share corners with seventeen OSr4Ru2 octahedra, edges with eight equivalent OSr5Ru octahedra, and faces with four equivalent OSr4Ru2 octahedra. The corner-sharing octahedra tilt angles range from 0–56°.