DOI: 10.17188/1285557
title: Materials Data on Sr51W12N56O3 by Materials Project

description: Sr51W12N56O3 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are twenty-six inequivalent Sr sites. In the first Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.64–3.18 Å. In the second Sr site, Sr is bonded to four N and one O atom to form distorted SrN4O square pyramids that share a cornercorner with one SrN5O octahedra, a cornercorner with one SrN4O square pyramid, corners with four WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, and an edgeedge with one SrN5O octahedra. The corner-sharing octahedral tilt angles are 2°. There are a spread of Sr–N bond distances ranging from 2.62–2.88 Å. The Sr–O bond length is 2.60 Å. In the third Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.67–3.07 Å. In the fourth Sr site, Sr is bonded in a 4-coordinate geometry to four N and one O atom. There are a spread of Sr–N bond distances ranging from 2.45–3.28 Å. The Sr–O bond length is 2.46 Å. In the fifth Sr site, Sr is bonded to six N atoms to form SrN6 octahedra that share corners with two SrN6 octahedra, a cornercorner with one SrN4O square pyramid, a cornercorner with one WN4 tetrahedra, edges with five SrN6 octahedra, edges with two WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 12–23°. There are a spread of Sr–N bond distances ranging from 2.61–2.85 Å. In the sixth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share corners with three SrN6 octahedra, a cornercorner with one WN4 tetrahedra, edges with four SrN6 octahedra, and edges with two WN4 tetrahedra. The corner-sharing octahedra tilt angles range from 10–23°. There are a spread of Sr–N bond distances ranging from 2.55–2.98 Å. In the seventh Sr site, Sr is bonded to five N atoms to form distorted SrN5 trigonal bipyramids that share corners with three SrN4O square pyramids, corners with three WN4 tetrahedra, an edgeedge with one SrN5 square pyramid, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. There are a spread of Sr–N bond distances ranging from 2.51–2.74 Å. In the eighth Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.54–3.07 Å. In the ninth Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.55–3.20 Å. In the tenth Sr site, Sr is bonded to five N atoms to form distorted SrN5 trigonal bipyramids that share a cornercorner with one SrN6 octahedra, corners with two SrN4O square pyramids, corners with three WN4 tetrahedra, edges with four SrN6 octahedra, and an edgeedge with one SrN5 square pyramid. The corner-sharing octahedral tilt angles are 16°. There are a spread of Sr–N bond distances ranging from 2.51–2.85 Å. In the eleventh Sr site, Sr is bonded in a 7-coordinate geometry to six N and one O atom. There are a spread of Sr–N bond distances ranging from 2.66–2.85 Å. The Sr–O bond length is 3.05 Å. In the twelfth Sr site, Sr is bonded to five N and one O atom to form SrN5O octahedra that share corners with two SrN4O square pyramids, corners with two WN4 tetrahedra, edges with three SrN6 octahedra, edges with three SrN4O square pyramids, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. There are a spread of Sr–N bond distances ranging from 2.60–2.87 Å. The Sr–O bond length is 2.60 Å. In the thirteenth Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.43–3.02 Å. In the fourteenth Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.51–2.87 Å. In the fifteenth Sr site, Sr is bonded to five N and one O atom to form distorted SrN5O octahedra that share corners with two SrN6 octahedra, a cornercorner with one SrN4O square pyramid, a cornercorner with one WN4 tetrahedra, edges with four SrN6 octahedra, an edgeedge with one SrN4O square pyramid, and edges with two WN4 tetrahedra. The corner-sharing octahedra tilt angles range from 10–11°. There are a spread of Sr–N bond distances ranging from 2.57–2.85 Å. The Sr–O bond length is 2.66 Å. In the sixteenth Sr site, Sr is bonded in a 5-coordinate geometry to five N atoms. There are a spread of Sr–N bond distances ranging from 2.57–3.00 Å. In the seventeenth Sr site, Sr is bonded to five N atoms to form distorted SrN5 square pyramids that share corners with two SrN6 octahedra, corners with four WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, edges with two SrN6 octahedra, an edgeedge with one SrN5 square pyramid, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 12–15°. There are a spread of Sr–N bond distances ranging from 2.44–3.13 Å. In the eighteenth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share a cornercorner with one SrN5O octahedra, corners with three WN4 tetrahedra, edges with five SrN6 octahedra, edges with two SrN5 square pyramids, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 11°. There are a spread of Sr–N bond distances ranging from 2.48–3.01 Å. In the nineteenth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share corners with three SrN6 octahedra, a cornercorner with one WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, edges with four SrN6 octahedra, an edgeedge with one SrN5 square pyramid, edges with two equivalent WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 12–51°. There are a spread of Sr–N bond distances ranging from 2.53–2.99 Å. In the twentieth Sr site, Sr is bonded to five N atoms to form distorted SrN5 square pyramids that share a cornercorner with one SrN6 octahedra, corners with two WN4 tetrahedra, corners with two SrN5 trigonal bipyramids, edges with two SrN5O octahedra, an edgeedge with one SrN5 square pyramid, an edgeedge with one WN4 tetrahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 8°. There are a spread of Sr–N bond distances ranging from 2.50–2.92 Å. In the twenty-first Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.49–3.21 Å. In the twenty-second Sr site, Sr is bonded in a 6-coordinate geometry to six N atoms. There are a spread of Sr–N bond distances ranging from 2.50–3.27 Å. In the twenty-third Sr site, Sr is bonded in a 5-coordinate geometry to three N and two O atoms. There are a spread of Sr–N bond distances ranging from 2.62–2.93 Å. There are one shorter (2.27 Å) and one longer (2.47 Å) Sr–O bond lengths. In the twenty-fourth Sr site, Sr is bonded to four N and one O atom to form SrN4O square pyramids that share corners with two SrN6 octahedra, a cornercorner with one SrN4O square pyramid, corners with three WN4 tetrahedra, a cornercorner with one SrN5 trigonal bipyramid, edges with two equivalent SrN5O octahedra, and an edgeedge with one SrN4O square pyramid. The corner-sharing octahedra tilt angles range from 2–5°. There are a spread of Sr–N bond distances ranging from 2.57–2.83 Å. The Sr–O bond length is 2.73 Å. In the twenty-fifth Sr site, Sr is bonded to six N atoms to form distorted SrN6 octahedra that share corners with three SrN6 octahedra, a cornercorner with one SrN5 square pyramid, a cornercorner with one WN4 tetrahedra, edges with two SrN6 octahedra, and edges with two WN4 tetrahedra. The corner-sharing octahedra tilt angles range from 14–62°. There are a spread of Sr–N bond distances ranging from 2.60–2.95 Å. In the twenty-sixth Sr site, Sr is bonded to six N atoms to form SrN6 octahedra that share corners with four SrN6 octahedra, corners with two equivalent SrN5 square pyramids, corners with four WN4 tetrahedra, and edges with two equivalent SrN6 octahedra. The corner-sharing octahedra tilt angles range from 51–62°. There are a spread of Sr–N bond distances ranging from 2.62–2.76 Å. There are six inequivalent W sites. In the first W site, W is bonded to four N atoms to form distorted WN4 tetrahedra that share a cornercorner with one SrN5O octahedra, corners with three SrN4O square pyramids, and a cornercorner with one SrN5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 5°. There are a spread of W–N bond distances ranging from 1.88–1.98 Å. In the second W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with three SrN6 octahedra, a cornercorner with one SrN5 square pyramid, a cornercorner with one SrN5 trigonal bipyramid, and edges with four SrN6 octahedra. The corner-sharing octahedra tilt angles range from 11–67°. There are a spread of W–N bond distances ranging from 1.89–1.94 Å. In the third W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with five SrN6 octahedra and edges with four SrN5O octahedra. The corner-sharing octahedra tilt angles range from 8–84°. There are a spread of W–N bond distances ranging from 1.91–1.95 Å. In the fourth W site, W is bonded to four N atoms to form WN4 tetrahedra that share a cornercorner with one SrN6 octahedra, corners with four SrN4O square pyramids, corners with three SrN5 trigonal bipyramids, an edgeedge with one SrN5O octahedra, and an edgeedge with one SrN5 square pyramid. The corner-sharing octahedral tilt angles are 4°. There are a spread of W–N bond distances ranging from 1.91–1.95 Å. In the fifth W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with two SrN6 octahedra, corners with three SrN4O square pyramids, an edgeedge with one SrN6 octahedra, and an edgeedge with one SrN5 trigonal bipyramid. The corner-sharing octahedra tilt angles range from 9–81°. There are a spread of W–N bond distances ranging from 1.88–1.93 Å. In the sixth W site, W is bonded to four N atoms to form WN4 tetrahedra that share corners with two SrN4O square pyramids, a cornercorner with one SrN5 trigonal bipyramid, and edges with two SrN6 octahedra. There is two shorter (1.91 Å) and two longer (1.93 Å) W–N bond length. There are twenty-eight inequivalent N sites. In the first N site, N is bonded to five Sr and one W atom to form distorted NSr5W octahedra that share corners with two NSr6 octahedra, a cornercorner with one NSr4W trigonal bipyramid, edges with six NSr6 octahedra, and an edgeedge with one NSr4W trigonal bipyramid. The corner-sharing octahedra tilt angles range from 5–9°. In the second N site, N is bonded to four Sr and one W atom to form distorted NSr4W trigonal bipyramids that share corners with two NSr6 octahedra, edges with four NSr5W octahedra, and an edgeedge with one NSr4W trigonal bipyramid. The corner-sharing octahedra tilt angles range from 10–21°. In the third N site, N is bonded in a 5-coordinate geometry to four Sr and one W atom. In the fourth N site, N is bonded to five Sr and one W atom to form distorted NSr5W octahedra that share a cornercorner with one NSr5W octahedra, a cornercorner with one OSr6 octahedra, edges with nine NSr6 octahedra, and an edgeedge with one NSr4W trigonal bipyramid. The corner-sharing octahedra tilt angles range from 11–15°. In the fifth N site, N is bonded in a 6-coordinate geometry to five Sr and one W atom. In the sixth N site, N is bonded to six Sr atoms to form a mixture of edge and corner-sharing NSr6 octahedra. The corner-sharing octahedra tilt angles range from 3–18°. In the seventh N site, N is bonded to five Sr and one W atom to form distorted NSr5W octahedra that share corners with five NSr5W octahedra,