DOE OSTI2020
Sr16La3Co11(Cu4O23)2 crystallizes in the tetragonal P4mm space group. The structure is three-dimensional. there are sixteen inequivalent Sr sites. In the first Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.63 Å) and four longer (2.65 Å) Sr–O bond lengths. In the second Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.61 Å) and four longer (2.75 Å) Sr–O bond lengths. In the third Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.66 Å) and four longer (2.72 Å) Sr–O bond lengths. In the fourth Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.68 Å) and four longer (2.70 Å) Sr–O bond lengths. In the fifth Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.69 Å) and four longer (2.70 Å) Sr–O bond lengths. In the sixth Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. All Sr–O bond lengths are 2.69 Å. In the seventh Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.68 Å) and four longer (2.70 Å) Sr–O bond lengths. In the eighth Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.66 Å) and four longer (2.72 Å) Sr–O bond lengths. In the ninth Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.62 Å) and four longer (2.76 Å) Sr–O bond lengths. In the tenth Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.64 Å) and four longer (2.68 Å) Sr–O bond lengths. In the eleventh Sr site, Sr is bonded in a body-centered cubic geometry to eight O atoms. There are four shorter (2.50 Å) and four longer (2.77 Å) Sr–O bond lengths. In the twelfth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with eight SrO12 cuboctahedra, faces with five SrO12 cuboctahedra, faces with four equivalent CoO6 octahedra, and faces with four equivalent CuO5 square pyramids. There are a spread of Sr–O bond distances ranging from 2.70–2.91 Å. In the thirteenth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with twelve SrO12 cuboctahedra, faces with six SrO12 cuboctahedra, and faces with eight CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.68–2.79 Å. In the fourteenth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with twelve SrO12 cuboctahedra, faces with six SrO12 cuboctahedra, and faces with eight CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.68–2.79 Å. In the fifteenth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with twelve SrO12 cuboctahedra, faces with six SrO12 cuboctahedra, and faces with eight CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.66–2.79 Å. In the sixteenth Sr site, Sr is bonded to twelve O atoms to form SrO12 cuboctahedra that share corners with four equivalent LaO12 cuboctahedra, corners with eight SrO12 cuboctahedra, a faceface with one LaO12 cuboctahedra, faces with five SrO12 cuboctahedra, and faces with eight CoO6 octahedra. There are a spread of Sr–O bond distances ranging from 2.60–2.86 Å. There are three inequivalent La sites. In the first La site, La is bonded to twelve O atoms to form LaO12 cuboctahedra that share corners with four equivalent SrO12 cuboctahedra, corners with eight LaO12 cuboctahedra, a faceface with one SrO12 cuboctahedra, faces with five LaO12 cuboctahedra, and faces with eight CoO6 octahedra. There are a spread of La–O bond distances ranging from 2.54–2.81 Å. In the second La site, La is bonded to twelve O atoms to form LaO12 cuboctahedra that share corners with twelve LaO12 cuboctahedra, faces with six LaO12 cuboctahedra, and faces with eight CoO6 octahedra. There are a spread of La–O bond distances ranging from 2.64–2.79 Å. In the third La site, La is bonded to twelve O atoms to form LaO12 cuboctahedra that share corners with eight LaO12 cuboctahedra, faces with five LaO12 cuboctahedra, faces with four equivalent CoO6 octahedra, and faces with four equivalent CoO5 square pyramids. There are a spread of La–O bond distances ranging from 2.74–2.79 Å. There are eleven inequivalent Co sites. In the first Co site, Co is bonded to five O atoms to form CoO5 square pyramids that share a cornercorner with one CoO6 octahedra, corners with four equivalent CoO5 square pyramids, and faces with four equivalent LaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There is four shorter (1.97 Å) and one longer (1.98 Å) Co–O bond length. In the second Co site, Co is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Co–O bond lengths are 1.97 Å. In the third Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 octahedra and faces with eight SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Co–O bond distances ranging from 1.81–1.97 Å. In the fourth Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 octahedra and faces with eight SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Co–O bond distances ranging from 1.80–1.97 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 equivalent SrO12 cuboctahedra, and faces with four equivalent LaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–10°. There are a spread of Co–O bond distances ranging from 1.77–1.98 Å. In the sixth Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 octahedra and faces with eight LaO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Co–O bond distances ranging from 1.83–1.97 Å. In the seventh Co site, Co is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Co–O bond lengths are 1.97 Å. In the eighth Co site, Co is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Co–O bond lengths are 1.97 Å. In the ninth Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with five CoO6 octahedra, a cornercorner with one CuO5 square pyramid, and faces with eight SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Co–O bond distances ranging from 1.76–1.97 Å. In the tenth Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with six CoO6 octahedra and faces with eight SrO12 cuboctahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Co–O bond distances ranging from 1.82–1.97 Å. In the eleventh Co site, Co is bonded to six O atoms to form CoO6 octahedra that share corners with five CoO6 octahedra, a cornercorner with one CoO5 square pyramid, and faces with eight LaO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. There is two shorter (1.83 Å) and four longer (1.97 Å) Co–O bond length. There are eight inequivalent Cu sites. In the first Cu site, Cu is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Cu–O bond lengths are 1.97 Å. In the second Cu site, Cu is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Cu–O bond lengths are 1.97 Å. In the third Cu site, Cu is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Cu–O bond lengths are 1.97 Å. In the fourth Cu site, Cu is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Cu–O bond lengths are 1.97 Å. In the fifth Cu site, Cu is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Cu–O bond lengths are 1.97 Å. In the sixth Cu site, Cu is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Cu–O bond lengths are 1.97 Å. In the seventh Cu site, Cu is bonded in a rectangular see-saw-like geometry to four equivalent O atoms. All Cu–O bond lengths are 1.97 Å. In the eighth Cu site, Cu is bonded to five O atoms to form CuO5 square pyramids that share a cornercorner with one CoO6 octahedra, corners with four equivalent CuO5 square pyramids, and faces with four equivalent SrO12 cuboctahedra. The corner-sharing octahedral tilt angles are 0°. All Cu–O bond lengths are 1.98 Å. There are twenty-seven inequivalent O sites. In the first O site, O is bonded to two equivalent Sr, two equivalent La, and two equivalent Co atoms to form distorted OSr2La2Co2 octahedra that share corners with fourteen OSr4Co2 octahedra, edges with four OSr4Co2 octahedra, and faces with four equivalent OSr2La2Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–64°. In the second O site, O is bonded to four Sr and two equivalent Cu atoms to form OSr4Cu2 octahedra that share corners with fourteen OSr4Co2 octahedra, edges with four OSr4Co2 octahedra, and faces with four equivalent OSr4Cu2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the third O site, O is bonded to four Sr and two equivalent Cu atoms to form a mixture of corner, edge, and face-sharing OSr4Cu2 octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the fourth O site, O is bonded to four Sr and two equivalent Cu atoms to form a mixture of corner, edge, and face-sharing OSr4Cu2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the fifth O site, O is bonded in a distorted linear geometry to four equivalent Sr and two Co atoms. In the sixth O site, O is bonded in a linear geometry to four equivalent Sr and two Co atoms. In the seventh O site, O is bonded to four Sr and two equivalent Co atoms to form a mixture of distorted corner, edge, and face-sharing OSr4Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–63°. In the eighth O site, O is bonded in a distorted linear geometry to four equivalent Sr and two Co atoms. In the ninth O site, O is bonded in a linear geometry to four equivalent La and two Co atoms. In the tenth O site, O is bonded in a distorted linear geometry to four equivalent La and two Co atoms. In the eleventh O site, O is bonded to four Sr and two equivalent Co atoms to form a mixture of corner, edge, and face-sharing OSr4Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–64°. In the twelfth O site, O is bonded to four Sr and two equivalent Cu atoms to form a mixture of corner, edge, and face-sharing OSr4Cu2 octahedra. The corner-sharing octahedra tilt angles range from 0–63°. In the thirteenth O site, O is bonded to four Sr and two equivalent Cu atoms to form a mixture of corner, edge, and face-sharing OSr4Cu2 octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the fourteenth O site, O is bonded to four Sr and two equivalent Cu atoms to form a mixture of corner, edge, and face-sharing OSr4Cu2 octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the fifteenth O site, O is bonded to four Sr and two equivalent Cu atoms to form a mixture of corner, edge, and face-sharing OSr4Cu2 octahedra. The corner-sharing octahedra tilt angles range from 0–62°. In the sixteenth O site, O is bonded to four Sr and two equivalent Co atoms to form a mixture of corner, edge, and face-sharing OSr4Co2 octahedra. The corner-sharing octahedra tilt angles range from 0–63°. In the seventeenth O site, O is bonded to four Sr and two equivalent Co atoms to form a mixture of distorted corner, edge, and face-sharing OSr4Co2 octahedra. The corner-sharing octahedra tilt angles range from 1–63°. In the eighteenth O site, O is bonded in a 6-coordinate