DOI: 10.17188/1283966
title: Materials Data on Sc20O19 by Materials Project

description: Sc20O19 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are twenty inequivalent Sc sites. In the first Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Sc–O bond distances ranging from 2.22–2.26 Å. In the second Sc site, Sc is bonded to five O atoms to form ScO5 square pyramids that share corners with five ScO6 octahedra, corners with four ScO5 square pyramids, and edges with eight ScO6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. There are two shorter (2.25 Å) and three longer (2.26 Å) Sc–O bond lengths. In the third Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with two ScO6 octahedra, corners with four ScO5 square pyramids, edges with nine ScO6 octahedra, and edges with three ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Sc–O bond distances ranging from 2.22–2.25 Å. In the fourth Sc site, Sc is bonded to five O atoms to form ScO5 square pyramids that share corners with four ScO6 octahedra, corners with five ScO5 square pyramids, and edges with eight ScO6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. There are a spread of Sc–O bond distances ranging from 2.24–2.27 Å. In the fifth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with two ScO6 octahedra, corners with four ScO5 square pyramids, edges with nine ScO6 octahedra, and edges with three ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Sc–O bond distances ranging from 2.22–2.25 Å. In the sixth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Sc–O bond distances ranging from 2.22–2.27 Å. In the seventh Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with four ScO6 octahedra, corners with two ScO5 square pyramids, edges with ten ScO6 octahedra, and edges with two ScO5 square pyramids. The corner-sharing octahedral tilt angles are 1°. There are a spread of Sc–O bond distances ranging from 2.22–2.24 Å. In the eighth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of Sc–O bond distances ranging from 2.22–2.26 Å. In the ninth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with two ScO6 octahedra, corners with four ScO5 square pyramids, edges with nine ScO6 octahedra, and edges with three ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Sc–O bond distances ranging from 2.21–2.25 Å. In the tenth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Sc–O bond distances ranging from 2.22–2.26 Å. In the eleventh Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with two ScO6 octahedra, corners with four ScO5 square pyramids, edges with nine ScO6 octahedra, and edges with three ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Sc–O bond distances ranging from 2.21–2.24 Å. In the twelfth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of Sc–O bond distances ranging from 2.22–2.27 Å. In the thirteenth Sc site, Sc is bonded to five O atoms to form ScO5 square pyramids that share corners with five ScO6 octahedra, corners with four ScO5 square pyramids, and edges with eight ScO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are four shorter (2.26 Å) and one longer (2.27 Å) Sc–O bond lengths. In the fourteenth Sc site, Sc is bonded to five O atoms to form ScO5 square pyramids that share corners with four ScO6 octahedra, corners with five ScO5 square pyramids, and edges with eight ScO6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. There are one shorter (2.24 Å) and four longer (2.26 Å) Sc–O bond lengths. In the fifteenth Sc site, Sc is bonded to five O atoms to form ScO5 square pyramids that share corners with five ScO6 octahedra, corners with four ScO5 square pyramids, and edges with eight ScO6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are a spread of Sc–O bond distances ranging from 2.25–2.27 Å. In the sixteenth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of Sc–O bond distances ranging from 2.23–2.27 Å. In the seventeenth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with four ScO6 octahedra, corners with two ScO5 square pyramids, edges with ten ScO6 octahedra, and edges with two ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 1–2°. There are a spread of Sc–O bond distances ranging from 2.21–2.24 Å. In the eighteenth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of Sc–O bond distances ranging from 2.22–2.27 Å. In the nineteenth Sc site, Sc is bonded to five O atoms to form ScO5 square pyramids that share corners with five ScO6 octahedra, corners with four ScO5 square pyramids, and edges with eight ScO6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. There are four shorter (2.26 Å) and one longer (2.27 Å) Sc–O bond lengths. In the twentieth Sc site, Sc is bonded to six O atoms to form ScO6 octahedra that share corners with five ScO6 octahedra, a cornercorner with one ScO5 square pyramid, edges with eight ScO6 octahedra, and edges with four ScO5 square pyramids. The corner-sharing octahedra tilt angles range from 1–3°. There are a spread of Sc–O bond distances ranging from 2.22–2.26 Å. There are nineteen inequivalent O sites. In the first O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedral tilt angles are 1°. In the second O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. In the third O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the fourth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. In the fifth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. In the sixth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. In the seventh O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. In the eighth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. In the ninth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the tenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. In the eleventh O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. In the twelfth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. In the thirteenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the fourteenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. In the fifteenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°. In the sixteenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. In the seventeenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the eighteenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. In the nineteenth O site, O is bonded to six Sc atoms to form a mixture of corner and edge-sharing OSc6 octahedra. The corner-sharing octahedra tilt angles range from 1–2°.