DOI: 10.17188/1721274
title: Materials Data on Sm4TiFe33N4 by Materials Project

description: Sm4TiFe33N4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. there are four inequivalent Sm sites. In the first Sm site, Sm is bonded in a distorted bent 120 degrees geometry to eight Fe and two N atoms. There are a spread of Sm–Fe bond distances ranging from 3.09–3.38 Å. There are one shorter (2.50 Å) and one longer (2.51 Å) Sm–N bond lengths. In the second Sm site, Sm is bonded in a bent 120 degrees geometry to nine Fe and two N atoms. There are a spread of Sm–Fe bond distances ranging from 3.08–3.38 Å. Both Sm–N bond lengths are 2.50 Å. In the third Sm site, Sm is bonded in a bent 120 degrees geometry to nine Fe and two N atoms. There are a spread of Sm–Fe bond distances ranging from 3.09–3.38 Å. Both Sm–N bond lengths are 2.50 Å. In the fourth Sm site, Sm is bonded in a distorted bent 120 degrees geometry to one Ti, eight Fe, and two N atoms. The Sm–Ti bond length is 3.19 Å. There are a spread of Sm–Fe bond distances ranging from 3.10–3.41 Å. Both Sm–N bond lengths are 2.51 Å. Ti is bonded in a 1-coordinate geometry to one Sm and thirteen Fe atoms. There are a spread of Ti–Fe bond distances ranging from 2.37–2.78 Å. There are thirty-three inequivalent Fe sites. In the first Fe site, Fe is bonded in a single-bond geometry to six Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.45–2.75 Å. The Fe–N bond length is 1.89 Å. In the second Fe site, Fe is bonded in a single-bond geometry to one Ti, four Fe, and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.43–2.59 Å. The Fe–N bond length is 1.88 Å. In the third Fe site, Fe is bonded in a single-bond geometry to six Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.45–2.74 Å. The Fe–N bond length is 1.88 Å. In the fourth Fe site, Fe is bonded in a single-bond geometry to one Ti, four Fe, and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.44–2.61 Å. The Fe–N bond length is 1.90 Å. In the fifth Fe site, Fe is bonded to two Sm, one Ti, and nine Fe atoms to form distorted FeSm2TiFe9 cuboctahedra that share corners with seven FeSm2Fe10 cuboctahedra, corners with four NSm2Fe4 octahedra, edges with two FeSm2Fe10 cuboctahedra, edges with two NSm2Fe4 octahedra, and faces with nine FeSm2TiFe9 cuboctahedra. The corner-sharing octahedra tilt angles range from 24–29°. There are a spread of Fe–Fe bond distances ranging from 2.46–2.78 Å. In the sixth Fe site, Fe is bonded to two Sm and ten Fe atoms to form distorted FeSm2Fe10 cuboctahedra that share corners with seven FeSm2Fe10 cuboctahedra, corners with four NSm2Fe4 octahedra, edges with three FeSm2Fe10 cuboctahedra, edges with two NSm2Fe4 octahedra, and faces with eight FeSm2Fe10 cuboctahedra. The corner-sharing octahedra tilt angles range from 24–28°. There are a spread of Fe–Fe bond distances ranging from 2.45–2.78 Å. In the seventh Fe site, Fe is bonded in a single-bond geometry to one Ti, four Fe, and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.44–2.57 Å. The Fe–N bond length is 1.90 Å. In the eighth Fe site, Fe is bonded in a single-bond geometry to six Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.44–2.74 Å. The Fe–N bond length is 1.88 Å. In the ninth Fe site, Fe is bonded to two Sm and ten Fe atoms to form distorted FeSm2Fe10 cuboctahedra that share corners with eight FeSm2Fe10 cuboctahedra, corners with four NSm2Fe4 octahedra, edges with three FeSm2Fe10 cuboctahedra, edges with two NSm2Fe4 octahedra, and faces with nine FeSm2Fe10 cuboctahedra. The corner-sharing octahedra tilt angles range from 24–28°. There are a spread of Fe–Fe bond distances ranging from 2.46–2.76 Å. In the tenth Fe site, Fe is bonded in a 12-coordinate geometry to two Sm, one Ti, and nine Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.45–2.81 Å. In the eleventh Fe site, Fe is bonded in a single-bond geometry to six Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.45–2.75 Å. The Fe–N bond length is 1.89 Å. In the twelfth Fe site, Fe is bonded in a single-bond geometry to one Ti, four Fe, and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.43–2.62 Å. The Fe–N bond length is 1.88 Å. In the thirteenth Fe site, Fe is bonded in a single-bond geometry to one Ti, four Fe, and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.50–2.56 Å. The Fe–N bond length is 1.93 Å. In the fourteenth Fe site, Fe is bonded in a single-bond geometry to five Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.47–2.66 Å. The Fe–N bond length is 1.92 Å. In the fifteenth Fe site, Fe is bonded in a single-bond geometry to five Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.49–2.66 Å. The Fe–N bond length is 1.93 Å. In the sixteenth Fe site, Fe is bonded in a single-bond geometry to one Ti, four Fe, and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.50–2.56 Å. The Fe–N bond length is 1.92 Å. In the seventeenth Fe site, Fe is bonded to three Sm and nine Fe atoms to form FeSm3Fe9 cuboctahedra that share corners with eleven FeSm2TiFe9 cuboctahedra, corners with four NSm2Fe4 octahedra, edges with four FeSm2Fe10 cuboctahedra, faces with eight FeSm2Fe10 cuboctahedra, and faces with two NSm2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 64–69°. There are a spread of Fe–Fe bond distances ranging from 2.48–2.68 Å. In the eighteenth Fe site, Fe is bonded to three Sm, one Ti, and eight Fe atoms to form FeSm3TiFe8 cuboctahedra that share corners with ten FeSm2Fe10 cuboctahedra, corners with four NSm2Fe4 octahedra, edges with four FeSm2Fe10 cuboctahedra, faces with six FeSm2TiFe9 cuboctahedra, and faces with two NSm2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 64–70°. There are a spread of Fe–Fe bond distances ranging from 2.49–2.55 Å. In the nineteenth Fe site, Fe is bonded in a single-bond geometry to five Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.48–2.65 Å. The Fe–N bond length is 1.92 Å. In the twentieth Fe site, Fe is bonded in a single-bond geometry to four Fe and one N atom. There are one shorter (2.46 Å) and one longer (2.48 Å) Fe–Fe bond lengths. The Fe–N bond length is 1.92 Å. In the twenty-first Fe site, Fe is bonded in a single-bond geometry to four Fe and one N atom. There are one shorter (2.48 Å) and one longer (2.49 Å) Fe–Fe bond lengths. The Fe–N bond length is 1.92 Å. In the twenty-second Fe site, Fe is bonded in a single-bond geometry to five Fe and one N atom. There are a spread of Fe–Fe bond distances ranging from 2.47–2.66 Å. The Fe–N bond length is 1.92 Å. In the twenty-third Fe site, Fe is bonded to three Sm and nine Fe atoms to form FeSm3Fe9 cuboctahedra that share corners with eleven FeSm2TiFe9 cuboctahedra, corners with four NSm2Fe4 octahedra, edges with four FeSm2Fe10 cuboctahedra, faces with seven FeSm2TiFe9 cuboctahedra, and faces with two NSm2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 64–69°. There are a spread of Fe–Fe bond distances ranging from 2.47–2.69 Å. In the twenty-fourth Fe site, Fe is bonded to three Sm and nine Fe atoms to form FeSm3Fe9 cuboctahedra that share corners with ten FeSm2Fe10 cuboctahedra, corners with four NSm2Fe4 octahedra, edges with four FeSm2Fe10 cuboctahedra, faces with seven FeSm2Fe10 cuboctahedra, and faces with two NSm2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 62–68°. There are a spread of Fe–Fe bond distances ranging from 2.47–2.69 Å. In the twenty-fifth Fe site, Fe is bonded to two Sm and ten Fe atoms to form FeSm2Fe10 cuboctahedra that share corners with seven FeSm2Fe10 cuboctahedra, corners with two NSm2Fe4 octahedra, edges with four FeSm2TiFe9 cuboctahedra, faces with eight FeSm2Fe10 cuboctahedra, and faces with two equivalent NSm2Fe4 octahedra. The corner-sharing octahedral tilt angles are 44°. There are one shorter (2.64 Å) and one longer (2.66 Å) Fe–Fe bond lengths. In the twenty-sixth Fe site, Fe is bonded to two Sm, one Ti, and nine Fe atoms to form distorted FeSm2TiFe9 cuboctahedra that share corners with eight FeSm2Fe10 cuboctahedra, corners with two NSm2Fe4 octahedra, edges with three FeSm2Fe10 cuboctahedra, faces with seven FeSm2Fe10 cuboctahedra, and faces with two equivalent NSm2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 44–46°. The Fe–Fe bond length is 2.65 Å. In the twenty-seventh Fe site, Fe is bonded to two Sm, one Ti, and nine Fe atoms to form distorted FeSm2TiFe9 cuboctahedra that share corners with seven FeSm2TiFe9 cuboctahedra, corners with two NSm2Fe4 octahedra, edges with four FeSm2Fe10 cuboctahedra, faces with seven FeSm2TiFe9 cuboctahedra, and faces with two equivalent NSm2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 44–46°. The Fe–Fe bond length is 2.63 Å. In the twenty-eighth Fe site, Fe is bonded to two Sm and ten Fe atoms to form FeSm2Fe10 cuboctahedra that share corners with eight FeSm2Fe10 cuboctahedra, corners with two NSm2Fe4 octahedra, edges with three FeSm2TiFe9 cuboctahedra, faces with eight FeSm2Fe10 cuboctahedra, and faces with two equivalent NSm2Fe4 octahedra. The corner-sharing octahedral tilt angles are 44°. Both Fe–Fe bond lengths are 2.65 Å. In the twenty-ninth Fe site, Fe is bonded to two Sm and ten Fe atoms to form FeSm2Fe10 cuboctahedra that share corners with thirteen FeSm2TiFe9 cuboctahedra, edges with two FeSm3Fe9 cuboctahedra, faces with ten FeSm2Fe10 cuboctahedra, and faces with four NSm2Fe4 octahedra. There are one shorter (2.68 Å) and one longer (2.69 Å) Fe–Fe bond lengths. In the thirtieth Fe site, Fe is bonded to two Sm, one Ti, and nine Fe atoms to form distorted FeSm2TiFe9 cuboctahedra that share corners with thirteen FeSm2TiFe9 cuboctahedra, edges with two FeSm3Fe9 cuboctahedra, faces with eight FeSm2TiFe9 cuboctahedra, and faces with four NSm2Fe4 octahedra. The Fe–Fe bond length is 2.66 Å. In the thirty-first Fe site, Fe is bonded in a distorted single-bond geometry to one Ti and six Fe atoms. In the thirty-second Fe site, Fe is bonded in a 2-coordinate geometry to one Sm and thirteen Fe atoms. The Fe–Fe bond length is 2.38 Å. In the thirty-third Fe site, Fe is bonded in a 2-coordinate geometry to one Sm and thirteen Fe atoms. There are four inequivalent N sites. In the first N site, N is bonded to two Sm and four Fe atoms to form NSm2Fe4 octahedra that share corners with nine FeSm2Fe10 cuboctahedra, corners with two NSm2Fe4 octahedra, edges with two FeSm2Fe10 cuboctahedra, and faces with six FeSm2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 61°. In the second N site, N is bonded to two Sm and four Fe atoms to form NSm2Fe4 octahedra that share corners with nine FeSm2TiFe9 cuboctahedra, corners with two NSm2Fe4 octahedra, an edgeedge with one FeSm2TiFe9 cuboctahedra, and faces with six FeSm2TiFe9 cuboctahedra. The corner-sharing octahedral tilt angles are 61°. In the third N site, N is bonded to two Sm and four Fe atoms to form NSm2Fe4 octahedra that share corners with ten FeSm2Fe10 cuboctahedra, corners with two NSm2Fe4 octahedra, edges with two FeSm2TiFe9 cuboctahedra, and faces with six FeSm2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 61°. In the fourth N site, N is bonded to two Sm and four Fe atoms to form NSm2Fe4 octahedra that share corners with eight FeSm2Fe10 cuboctahedra, corners with two NSm2Fe4 octahedra, an edgeedge with one FeSm2Fe10 cuboctahedra, and faces with six FeSm2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 61°.