Materials Data on Dy7Co6Sn23 by Materials Project

Abstract

Dy7Co6Sn23 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. there are two inequivalent Dy sites. In the first Dy site, Dy is bonded in a 12-coordinate geometry to six equivalent Co and twelve Sn atoms. All Dy–Co bond lengths are 3.44 Å. There are six shorter (3.37 Å) and six longer (3.39 Å) Dy–Sn bond lengths. In the second Dy site, Dy is bonded in a 12-coordinate geometry to two equivalent Co and ten Sn atoms. Both Dy–Co bond lengths are 3.18 Å. There are a spread of Dy–Sn bond distances ranging from 3.09–3.42 Å. Co is bonded in a 9-coordinate geometry to three Dy and six Sn atoms. There are a spread of Co–Sn bond distances ranging from 2.59–2.80 Å. There are six inequivalent Sn sites. In the first Sn site, Sn is bonded in a 2-coordinate geometry to three Dy and two equivalent Co atoms. In the second Sn site, Sn is bonded in a 7-coordinate geometry to three equivalent Dy, three equivalent Co, and one Sn atom. The Sn–Sn bond length is 2.98 Å. In the third Sn site, Sn is bonded in a 6-coordinate geometry to six equivalent Sn atoms. All Sn–Sn bond lengths are 2.99 Å. In the fourth Sn site, Sn is bonded in a 5-coordinate geometry to four equivalent Dy, one Co, and one Sn atom. The Sn–Sn bond length is 3.20 Å. In the fifth Sn site, Sn is bonded in a 4-coordinate geometry to three equivalent Dy and one Sn atom. In the sixth Sn site, Sn is bonded in a 7-coordinate geometry to three Dy, two equivalent Co, and two Sn atoms.