DOI: 10.17188/1720844
title: Materials Data on Y2Fe17CN by Materials Project

description: Y2Fe17CN crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Y is bonded in a distorted bent 120 degrees geometry to nine Fe, one C, and one N atom. There are a spread of Y–Fe bond distances ranging from 3.06–3.34 Å. The Y–C bond length is 2.52 Å. The Y–N bond length is 2.45 Å. There are ten inequivalent Fe sites. In the first Fe site, Fe is bonded in a single-bond geometry to five Fe and one C atom. There are a spread of Fe–Fe bond distances ranging from 2.46–2.64 Å. The Fe–C bond length is 1.91 Å. In the 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 2.47–2.65 Å. The Fe–N bond length is 1.92 Å. In the third Fe site, Fe is bonded to three equivalent Y and nine Fe atoms to form FeY3Fe9 cuboctahedra that share corners with eleven FeY3Fe9 cuboctahedra, corners with two equivalent CY2Fe4 octahedra, corners with two equivalent NY2Fe4 octahedra, edges with four FeY3Fe9 cuboctahedra, faces with eight FeY3Fe9 cuboctahedra, a faceface with one CY2Fe4 octahedra, and a faceface with one NY2Fe4 octahedra. The corner-sharing octahedra tilt angles range from 63–70°. There are a spread of Fe–Fe bond distances ranging from 2.45–2.67 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 2.38–2.75 Å. In the fifth Fe site, Fe is bonded to two equivalent Y and ten Fe atoms to form FeY2Fe10 cuboctahedra that share corners with eight FeY3Fe9 cuboctahedra, corners with two equivalent CY2Fe4 octahedra, edges with four FeY3Fe9 cuboctahedra, faces with eight FeY3Fe9 cuboctahedra, and faces with two equivalent NY2Fe4 octahedra. The corner-sharing octahedral tilt angles are 44°. There are two shorter (2.44 Å) and two longer (2.45 Å) Fe–Fe bond lengths. In the sixth Fe site, Fe is bonded to two equivalent Y and ten Fe atoms to form distorted FeY2Fe10 cuboctahedra that share corners with eight FeY3Fe9 cuboctahedra, corners with two equivalent NY2Fe4 octahedra, edges with four FeY3Fe9 cuboctahedra, faces with eight FeY3Fe9 cuboctahedra, and faces with two equivalent CY2Fe4 octahedra. The corner-sharing octahedral tilt angles are 44°. There are two shorter (2.43 Å) and two longer (2.44 Å) Fe–Fe bond lengths. In the seventh Fe site, Fe is bonded to two equivalent Y and ten Fe atoms to form distorted FeY2Fe10 cuboctahedra that share corners with fourteen FeY3Fe9 cuboctahedra, edges with two equivalent FeY3Fe9 cuboctahedra, faces with ten FeY3Fe9 cuboctahedra, faces with two equivalent CY2Fe4 octahedra, and faces with two equivalent NY2Fe4 octahedra. There are two shorter (2.43 Å) and two longer (2.44 Å) Fe–Fe bond lengths. In the eighth Fe site, Fe is bonded in a single-bond geometry to six Fe and one C atom. The Fe–Fe bond length is 2.46 Å. The Fe–C bond length is 1.84 Å. In the ninth Fe site, Fe is bonded in a single-bond geometry to six Fe and one N atom. The Fe–Fe bond length is 2.49 Å. The Fe–N bond length is 1.88 Å. In the tenth Fe site, Fe is bonded to two equivalent Y and ten Fe atoms to form distorted FeY2Fe10 cuboctahedra that share corners with eight FeY3Fe9 cuboctahedra, corners with two equivalent CY2Fe4 octahedra, corners with two equivalent NY2Fe4 octahedra, edges with three FeY2Fe10 cuboctahedra, an edgeedge with one CY2Fe4 octahedra, an edgeedge with one NY2Fe4 octahedra, and faces with nine FeY3Fe9 cuboctahedra. The corner-sharing octahedra tilt angles range from 23–29°. C is bonded to two equivalent Y and four Fe atoms to form CY2Fe4 octahedra that share corners with ten FeY3Fe9 cuboctahedra, corners with two equivalent NY2Fe4 octahedra, edges with two equivalent FeY2Fe10 cuboctahedra, and faces with six FeY2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 62°. N is bonded to two equivalent Y and four Fe atoms to form NY2Fe4 octahedra that share corners with ten FeY3Fe9 cuboctahedra, corners with two equivalent CY2Fe4 octahedra, edges with two equivalent FeY2Fe10 cuboctahedra, and faces with six FeY2Fe10 cuboctahedra. The corner-sharing octahedral tilt angles are 62°.