Materials Data on Ba17Y16Zn8Pt4O57 by Materials Project

Abstract

Ba17Y16Pt4Zn8O57 crystallizes in the tetragonal I4/m space group. The structure is three-dimensional. there are five inequivalent Ba sites. In the first Ba site, Ba is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of Ba–O bond distances ranging from 2.75–3.29 Å. In the second Ba site, Ba is bonded in a 10-coordinate geometry to ten O atoms. There are a spread of Ba–O bond distances ranging from 2.85–3.36 Å. In the third Ba site, Ba is bonded in a 9-coordinate geometry to nine O atoms. There are a spread of Ba–O bond distances ranging from 2.63–3.11 Å. In the fourth Ba site, Ba is bonded in a 6-coordinate geometry to ten O atoms. There are a spread of Ba–O bond distances ranging from 2.74–3.35 Å. In the fifth Ba site, Ba is bonded in a distorted q6 geometry to ten O atoms. There are two shorter (2.89 Å) and eight longer (2.95 Å) Ba–O bond lengths. There are four inequivalent Y sites. In the first Y site, Y is bonded to seven O atoms to form distorted YO7 pentagonal bipyramids that share corners with two equivalent ZnO5 trigonal bipyramids, edges with three YO7 pentagonal bipyramids, an edgeedge with one ZnO5 trigonal bipyramid, and a faceface with one PtO6 octahedra. There are a spread of Y–O bond distances ranging from 2.30–2.41 Å. In the second Y site, Y is bonded to seven O atoms to form distorted YO7 pentagonal bipyramids that share corners with two equivalent PtO6 octahedra, edges with two equivalent YO7 pentagonal bipyramids, edges with two equivalent ZnO5 trigonal bipyramids, and a faceface with one PtO6 octahedra. The corner-sharing octahedral tilt angles are 11°. There are a spread of Y–O bond distances ranging from 2.24–2.54 Å. In the third Y site, Y is bonded to seven O atoms to form distorted YO7 pentagonal bipyramids that share a cornercorner with one YO7 pentagonal bipyramid, corners with two equivalent ZnO5 trigonal bipyramids, an edgeedge with one YO7 pentagonal bipyramid, edges with two equivalent ZnO5 trigonal bipyramids, and faces with two equivalent YO7 pentagonal bipyramids. There are a spread of Y–O bond distances ranging from 2.31–2.45 Å. In the fourth Y site, Y is bonded in a 7-coordinate geometry to seven O atoms. There are a spread of Y–O bond distances ranging from 2.31–2.51 Å. Pt is bonded to six O atoms to form PtO6 octahedra that share corners with two equivalent YO7 pentagonal bipyramids, corners with two equivalent ZnO5 trigonal bipyramids, and faces with two YO7 pentagonal bipyramids. There are a spread of Pt–O bond distances ranging from 2.05–2.11 Å. There are two inequivalent Zn sites. In the first Zn site, Zn is bonded to five O atoms to form distorted ZnO5 trigonal bipyramids that share corners with two equivalent PtO6 octahedra and edges with three YO7 pentagonal bipyramids. The corner-sharing octahedral tilt angles are 12°. There are a spread of Zn–O bond distances ranging from 1.96–2.16 Å. In the second Zn site, Zn is bonded to five O atoms to form distorted ZnO5 trigonal bipyramids that share corners with four YO7 pentagonal bipyramids and edges with two equivalent YO7 pentagonal bipyramids. There are a spread of Zn–O bond distances ranging from 1.99–2.17 Å. There are ten inequivalent O sites. In the first O site, O is bonded to two equivalent Ba and four equivalent Y atoms to form OBa2Y4 octahedra that share corners with ten OBa2Y4 octahedra and faces with eight equivalent OBa2Y3Zn octahedra. The corner-sharing octahedra tilt angles range from 0–61°. In the second O site, O is bonded to three Ba, one Y, one Pt, and one Zn atom to form distorted OBa3YZnPt octahedra that share corners with eight OBa4YZn octahedra and faces with five OBa4YPt octahedra. The corner-sharing octahedra tilt angles range from 47–57°. In the third O site, O is bonded to five Ba and one Zn atom to form distorted OBa5Zn octahedra that share corners with eight OBa2Y3Zn octahedra, edges with eight OBa4YPt octahedra, and faces with two equivalent OBa3YZnPt octahedra. The corner-sharing octahedra tilt angles range from 13–55°. In the fourth O site, O is bonded in a 6-coordinate geometry to three Ba, two Y, and one Pt atom. In the fifth O site, O is bonded to four Ba, one Y, and one Pt atom to form distorted OBa4YPt octahedra that share corners with eight OBa2Y3Zn octahedra, edges with five OBa5Zn octahedra, and faces with two equivalent OBa3YZnPt octahedra. The corner-sharing octahedra tilt angles range from 4–59°. In the sixth O site, O is bonded in a 4-coordinate geometry to two Ba, three Y, and one Zn atom. In the seventh O site, O is bonded to two Ba, three Y, and one Zn atom to form distorted OBa2Y3Zn octahedra that share corners with ten OBa2Y3Zn octahedra, edges with two equivalent OBa2Y3Zn octahedra, and faces with four OBa2Y4 octahedra. The corner-sharing octahedra tilt angles range from 0–76°. In the eighth O site, O is bonded in a 4-coordinate geometry to two Ba, three Y, and one Zn atom. In the ninth O site, O is bonded to four Ba, one Y, and one Zn atom to form distorted OBa4YZn octahedra that share corners with nine OBa2Y3Zn octahedra, edges with five OBa5Zn octahedra, and faces with two equivalent OBa2Y3Zn octahedra. The corner-sharing octahedra tilt angles range from 4–58°. In the tenth O site, O is bonded to four equivalent Ba, one Y, and one Pt atom to form OBa4YPt octahedra that share corners with nine OBa4YPt octahedra, edges with five equivalent OBa4YPt octahedra, and faces with two equivalent OBa3YZnPt octahedra. The corner-sharing octahedra tilt angles range from 4–55°.