DOI: 10.17188/1475892
title: Materials Data on Sr2Ca2Fe3CoO12 by Materials Project

description: Sr2Ca2Fe3CoO12 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Pm space group. The structure is three-dimensional. there are four inequivalent Sr sites. In the first Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent SrO12 cuboctahedra, faces with four CaO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.72–2.77 Å. In the second Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with twelve CaO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.73–2.78 Å. In the third Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with two equivalent SrO12 cuboctahedra, faces with four CaO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.71–2.77 Å. In the fourth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent CaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, faces with six CaO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.70–2.77 Å. There are four inequivalent Ca sites. In the first Ca site, Ca is bonded to twelve O atoms to form CaO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, corners with eight CaO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.67–2.75 Å. In the second Ca site, Ca is bonded to twelve O atoms to form CaO12 cuboctahedra that share corners with twelve SrO12 cuboctahedra, faces with two equivalent SrO12 cuboctahedra, faces with four CaO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.66–2.73 Å. In the third Ca site, Ca is bonded to twelve O atoms to form CaO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, corners with eight CaO12 cuboctahedra, faces with six SrO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.70–2.75 Å. In the fourth Ca site, Ca is bonded to twelve O atoms to form CaO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, corners with eight CaO12 cuboctahedra, faces with two equivalent CaO12 cuboctahedra, faces with four SrO12 cuboctahedra, faces with two equivalent CoO6 octahedra, and faces with six FeO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.70–2.74 Å. There are three inequivalent Fe sites. In the first Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with six FeO6 octahedra, faces with four SrO12 cuboctahedra, and faces with four CaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Fe–O bond distances ranging from 1.93–1.95 Å. In the second Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with four FeO6 octahedra, faces with four SrO12 cuboctahedra, and faces with four CaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Fe–O bond distances ranging from 1.92–1.98 Å. In the third Fe site, Fe is bonded to six O atoms to form FeO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with four FeO6 octahedra, faces with four SrO12 cuboctahedra, and faces with four CaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Fe–O bond distances ranging from 1.91–1.99 Å. Co is bonded to six O atoms to form CoO6 octahedra that share corners with two equivalent CoO6 octahedra, corners with four FeO6 octahedra, faces with four SrO12 cuboctahedra, and faces with four CaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Co–O bond distances ranging from 1.86–1.94 Å. There are sixteen inequivalent O sites. In the first O site, O is bonded to two Sr, two Ca, and two equivalent Fe atoms to form distorted OSr2Ca2Fe2 octahedra that share corners with twelve OSr2Ca2Co2 octahedra, edges with four OSr2Ca2Fe2 octahedra, and faces with two equivalent OSr3CaFe2 octahedra. The corner-sharing octahedra tilt angles range from 0–60°. In the second O site, O is bonded to two Sr, two Ca, and two equivalent Fe atoms to form distorted OSr2Ca2Fe2 octahedra that share corners with ten OSr2Ca2Fe2 octahedra, edges with four OSr2Ca2Fe2 octahedra, and faces with four OSrCa3FeCo octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the third O site, O is bonded to two Sr, two Ca, and two equivalent Fe atoms to form distorted OSr2Ca2Fe2 octahedra that share corners with fourteen OSr2Ca2Fe2 octahedra, edges with four OSr2Ca2Fe2 octahedra, and faces with two equivalent OSr3CaFe2 octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the fourth O site, O is bonded to two Sr, two Ca, and two equivalent Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with ten OSr2Ca2Fe2 octahedra, edges with four OSr2Ca2Fe2 octahedra, and faces with four OSrCa3FeCo octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the fifth O site, O is bonded in a distorted linear geometry to two Sr, two Ca, and two equivalent Fe atoms. In the sixth O site, O is bonded to two Sr, two Ca, and two equivalent Fe atoms to form distorted OSr2Ca2Fe2 octahedra that share corners with ten OSr2Ca2Fe2 octahedra, edges with two equivalent OSr2Ca2Co2 octahedra, and faces with four OSrCa3FeCo octahedra. The corner-sharing octahedra tilt angles range from 1–60°. In the seventh O site, O is bonded to two Sr, two Ca, and two equivalent Fe atoms to form distorted OSr2Ca2Fe2 octahedra that share corners with fourteen OSr2Ca2Fe2 octahedra, edges with two equivalent OSr2Ca2Co2 octahedra, and faces with two equivalent OSr3CaFe2 octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the eighth O site, O is bonded to two Sr, two Ca, and two equivalent Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with six OSr2Ca2Co2 octahedra, edges with four OSr2Ca2Fe2 octahedra, and faces with four OSrCa3FeCo octahedra. The corner-sharing octahedra tilt angles range from 1–60°. In the ninth O site, O is bonded to three Sr, one Ca, and two Fe atoms to form distorted OSr3CaFe2 octahedra that share corners with twelve OSr2Ca2Fe2 octahedra, edges with four OSr3CaFe2 octahedra, and faces with three OSr2Ca2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 1–61°. In the tenth O site, O is bonded to three Sr, one Ca, one Fe, and one Co atom to form distorted OSr3CaFeCo octahedra that share corners with twelve OSr2Ca2Fe2 octahedra, edges with four OSr3CaFe2 octahedra, and faces with four OSr2Ca2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the eleventh O site, O is bonded in a distorted linear geometry to one Sr, three Ca, and two Fe atoms. In the twelfth O site, O is bonded to one Sr, three Ca, one Fe, and one Co atom to form distorted OSrCa3FeCo octahedra that share corners with eight OSr2Ca2Fe2 octahedra, edges with two equivalent OSrCa3FeCo octahedra, and faces with four OSr2Ca2Fe2 octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the thirteenth O site, O is bonded in a distorted linear geometry to two Sr, two Ca, and two Fe atoms. In the fourteenth O site, O is bonded in a distorted linear geometry to two Sr, two Ca, and two Fe atoms. In the fifteenth O site, O is bonded in a distorted linear geometry to two Sr, two Ca, one Fe, and one Co atom. In the sixteenth O site, O is bonded in a distorted linear geometry to two Sr, two Ca, one Fe, and one Co atom.