Materials Data on Tb7Co6Sn23 by Materials Project
Tb7Co6Sn23 crystallizes in the trigonal P-3m1 space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 12-coordinate geometry to six equivalent Co and twelve Sn atoms. All Tb–Co bond lengths are 3.44 Å. There are six shorter (3.37 Å) and six longer (3.38 Å) Tb–Sn bond lengths. In the second Tb site, Tb is bonded in a 12-coordinate geometry to two equivalent Co and ten Sn atoms. Both Tb–Co bond lengths are 3.17 Å. There are a spread of Tb–Sn bond distances ranging from 3.09–3.40 Å. Co is bonded in a 9-coordinate geometry to three Tb and six Sn atoms. There are a spread of Co–Sn bond distances ranging from 2.59–2.79 Å. There are six inequivalent Sn sites. In the first Sn site, Sn is bonded in a 12-coordinate geometry to three Tb, two equivalent Co, and one Sn atom. The Sn–Sn bond length is 2.98 Å. In the second Sn site, Sn is bonded in a 7-coordinate geometry to three equivalent Tb, three equivalent Co, and one Sn atom. The Sn–Sn bond length is 2.95 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 2.98 Å. In the fourth Sn site, Sn is bonded in a 5-coordinate geometry to four equivalent Tb, one Co, and one Sn atom. The Sn–Sn bond length is 3.18 Å. In the fifth Sn site, Sn is bonded in a 4-coordinate geometry to three equivalent Tb and one Sn atom. In the sixth Sn site, Sn is bonded in a 7-coordinate geometry to three Tb, two equivalent Co, and two Sn atoms.