Materials Data on Y3Fe29 by Materials Project
Y3Fe29 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. there are two inequivalent Y sites. In the first Y site, Y is bonded in a 12-coordinate geometry to twenty Fe atoms. There are a spread of Y–Fe bond distances ranging from 2.99–3.23 Å. In the second Y site, Y is bonded in a 11-coordinate geometry to nineteen Fe atoms. There are a spread of Y–Fe bond distances ranging from 2.99–3.29 Å. There are eleven inequivalent Fe sites. In the first Fe site, Fe is bonded to two equivalent Y and ten Fe atoms to form FeY2Fe10 cuboctahedra that share corners with eighteen FeY2Fe10 cuboctahedra, edges with eight FeY3Fe9 cuboctahedra, and faces with fourteen FeY2Fe10 cuboctahedra. There are a spread of Fe–Fe bond distances ranging from 2.36–2.58 Å. In the second Fe site, Fe is bonded to two equivalent Y and ten Fe atoms to form a mixture of corner, edge, and face-sharing FeY2Fe10 cuboctahedra. There are eight shorter (2.44 Å) and two longer (2.60 Å) Fe–Fe bond lengths. In the third Fe site, Fe is bonded in a 2-coordinate geometry to one Y and thirteen Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.39–2.89 Å. In the fourth Fe site, Fe is bonded in a 2-coordinate geometry to one Y and thirteen Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.57–2.91 Å. In the fifth Fe site, Fe is bonded to two Y and ten Fe atoms to form a mixture of distorted corner, edge, and face-sharing FeY2Fe10 cuboctahedra. There are a spread of Fe–Fe bond distances ranging from 2.39–2.68 Å. In the sixth Fe site, Fe is bonded in a 12-coordinate geometry to two equivalent Y and ten Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.45–2.60 Å. In the seventh Fe site, Fe is bonded in a 2-coordinate geometry to one Y and thirteen Fe atoms. There are a spread of Fe–Fe bond distances ranging from 2.40–2.60 Å. In the eighth Fe site, Fe is bonded to two Y and ten Fe atoms to form a mixture of distorted corner, edge, and face-sharing FeY2Fe10 cuboctahedra. Both Fe–Fe bond lengths are 2.42 Å. In the ninth Fe site, Fe is bonded to two Y and ten Fe atoms to form a mixture of corner, edge, and face-sharing FeY2Fe10 cuboctahedra. There are one shorter (2.43 Å) and one longer (2.46 Å) Fe–Fe bond lengths. In the tenth Fe site, Fe is bonded to three Y and nine Fe atoms to form a mixture of corner, edge, and face-sharing FeY3Fe9 cuboctahedra. Both Fe–Fe bond lengths are 2.46 Å. In the eleventh Fe site, Fe is bonded to three equivalent Y and nine Fe atoms to form a mixture of corner, edge, and face-sharing FeY3Fe9 cuboctahedra. The Fe–Fe bond length is 2.45 Å.