DOI: 10.17188/1475966
title: Materials Data on Sr4Ca4Co7CuO24 by Materials Project

description: Sr4Ca4Co7CuO24 is (Cubic) Perovskite-derived structured and crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are three 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, a faceface with one CuO6 octahedra, and faces with seven CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.69–2.74 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 equivalent SrO12 cuboctahedra, a faceface with one CuO6 octahedra, and faces with seven CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.72–2.75 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 equivalent SrO12 cuboctahedra, faces with six CaO12 cuboctahedra, a faceface with one CuO6 octahedra, and faces with seven CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.68–2.73 Å. There are three 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, a faceface with one CuO6 octahedra, and faces with seven CoO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.64–2.74 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 equivalent CaO12 cuboctahedra, a faceface with one CuO6 octahedra, and faces with seven CoO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.64–2.73 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 equivalent CaO12 cuboctahedra, faces with six SrO12 cuboctahedra, a faceface with one CuO6 octahedra, and faces with seven CoO6 octahedra. There are a spread of Ca–O bond distances ranging from 2.64–2.73 Å. There are five inequivalent Co sites. In the first Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with two equivalent CuO6 octahedra, corners with four CoO6 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 1.87–1.95 Å. In the second Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with two equivalent CuO6 octahedra, corners with four equivalent CoO6 octahedra, faces with four SrO12 cuboctahedra, and faces with four CaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 1–2°. There are a spread of Co–O bond distances ranging from 1.86–1.92 Å. In the third Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 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 Co–O bond distances ranging from 1.86–1.91 Å. In the fourth Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 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 Co–O bond distances ranging from 1.88–1.97 Å. In the fifth Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 octahedra, faces with four SrO12 cuboctahedra, and faces with four CaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Co–O bond distances ranging from 1.83–1.96 Å. Cu is bonded to six O atoms to form CuO6 octahedra that share corners with six CoO6 octahedra, faces with four SrO12 cuboctahedra, and faces with four CaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There is one shorter (1.93 Å) and five longer (1.95 Å) Cu–O bond length. There are fourteen inequivalent O sites. In the first O site, O is bonded to two Sr, two Ca, one Co, and one Cu atom to form distorted OSr2Ca2CoCu octahedra that share corners with eighteen OSr2Ca2Co2 octahedra, edges with four OSr2Ca2Co2 octahedra, and faces with six OSr2Ca2CoCu octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the second O site, O is bonded to two Sr, two Ca, and two Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with eighteen OSr2Ca2Co2 octahedra, edges with four OSr2Ca2CoCu octahedra, and faces with five OSr2Ca2CoCu octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the third O site, O is bonded to two Sr, two Ca, and two Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with sixteen OSr2Ca2CoCu octahedra, edges with four OSr2Ca2CoCu octahedra, and faces with seven OSr2Ca2Co2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the fourth O site, O is bonded to two Sr, two Ca, and two Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with eighteen OSr2Ca2CoCu octahedra, edges with four OSr2Ca2Co2 octahedra, and faces with six OSr2Ca2Co2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the fifth O site, O is bonded to two Sr, two Ca, one Co, and one Cu atom to form distorted OSr2Ca2CoCu octahedra that share corners with eighteen OSr2Ca2CoCu octahedra, edges with two equivalent OSr2Ca2Co2 octahedra, and faces with six OSr2Ca2CoCu octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the sixth O site, O is bonded in a distorted linear geometry to two Sr, two Ca, and two Co atoms. In the seventh O site, O is bonded to two Sr, two Ca, and two Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with twelve OSr2Ca2CoCu octahedra, edges with four OSr2Ca2CoCu octahedra, and faces with seven OSr2Ca2Co2 octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the eighth O site, O is bonded to two Sr, two Ca, and two Co atoms to form distorted OSr2Ca2Co2 octahedra that share corners with eighteen OSr2Ca2CoCu octahedra, edges with two equivalent OSr2Ca2Co2 octahedra, and faces with six OSr2Ca2Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the ninth O site, O is bonded to three Sr, one Ca, one Co, and one Cu atom to form distorted OSr3CaCoCu octahedra that share corners with eighteen OSr2Ca2Co2 octahedra, edges with four equivalent OSr3CaCo2 octahedra, and faces with eight OSr2Ca2CoCu octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the tenth O site, O is bonded to three Sr, one Ca, and two Co atoms to form distorted OSr3CaCo2 octahedra that share corners with eighteen OSr2Ca2CoCu octahedra, edges with four OSr3CaCoCu octahedra, and faces with seven OSr2Ca2CoCu octahedra. The corner-sharing octahedra tilt angles range from 1–62°. In the eleventh O site, O is bonded to one Sr, three Ca, one Co, and one Cu atom to form distorted OSrCa3CoCu octahedra that share corners with fourteen OSr2Ca2Co2 octahedra and faces with eight OSr2Ca2CoCu octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the twelfth O site, O is bonded in a distorted linear geometry to one Sr, three Ca, and two Co atoms. In the thirteenth O site, O is bonded to three Sr, one Ca, and two Co atoms to form distorted OSr3CaCo2 octahedra that share corners with twenty OSr2Ca2CoCu octahedra, edges with four equivalent OSr3CaCo2 octahedra, and faces with six OSr2Ca2Co2 octahedra. The corner-sharing octahedra tilt angles range from 2–62°. In the fourteenth O site, O is bonded in a distorted linear geometry to one Sr, three Ca, and two Co atoms.