Materials Data on Tm11Sn10 by Materials Project
Tm11Sn10 crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are four inequivalent Tm sites. In the first Tm site, Tm is bonded to seven Sn atoms to form a mixture of distorted edge, corner, and face-sharing TmSn7 pentagonal bipyramids. There are a spread of Tm–Sn bond distances ranging from 3.04–3.42 Å. In the second Tm site, Tm is bonded in a 7-coordinate geometry to seven Sn atoms. There are a spread of Tm–Sn bond distances ranging from 2.90–3.53 Å. In the third Tm site, Tm is bonded in a 9-coordinate geometry to nine Sn atoms. There are a spread of Tm–Sn bond distances ranging from 3.37–3.76 Å. In the fourth Tm site, Tm is bonded in a 7-coordinate geometry to seven Sn atoms. There are a spread of Tm–Sn bond distances ranging from 3.03–3.25 Å. There are five inequivalent Sn sites. In the first Sn site, Sn is bonded in a 8-coordinate geometry to eight Tm atoms. In the second Sn site, Sn is bonded in a 9-coordinate geometry to nine Tm atoms. In the third Sn site, Sn is bonded in a 11-coordinate geometry to seven Tm and four Sn atoms. There are two shorter (2.99 Å) and two longer (3.21 Å) Sn–Sn bond lengths. In the fourth Sn site, Sn is bonded in a 8-coordinate geometry to eight Tm atoms. In the fifth Sn site, Sn is bonded in a 2-coordinate geometry to eight Tm and two Sn atoms. The Sn–Sn bond length is 2.89 Å.