LiTmSn crystallizes in the hexagonal P6_3mc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 3-coordinate geometry to two equivalent Tm(1), four equivalent Tm(2), one Sn(2), and three equivalent Sn(1) atoms. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to six equivalent Tm(2), one Sn(2), and three equivalent Sn(1) atoms. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 12-coordinate geometry to six equivalent Li(1) and six equivalent Sn(1) atoms. In the second Tm site, Tm(2) is bonded in a 12-coordinate geometry to two equivalent Li(2), four equivalent Li(1), two equivalent Sn(2), and four equivalent Sn(1) atoms. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to one Li(2), three equivalent Li(1), two equivalent Tm(1), and four equivalent Tm(2) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Li(2), three equivalent Li(1), and six equivalent Tm(2) atoms.
LiTmSn crystallizes in the hexagonal P6_3mc space group. There are two inequivalent Li sites. In the first Li site, Li(1) is bonded in a 3-coordinate geometry to two equivalent Tm(1), four equivalent Tm(2), one Sn(2), and three equivalent Sn(1) atoms. There is one shorter (3.07 Å) and one longer (3.39 Å) Li(1)-Tm(1) bond length. There are two shorter (3.13 Å) and two longer (3.34 Å) Li(1)-Tm(2) bond lengths. The Li(1)-Sn(2) bond length is 2.67 Å. There are two shorter (2.70 Å) and one longer (3.18 Å) Li(1)-Sn(1) bond length. In the second Li site, Li(2) is bonded in a 4-coordinate geometry to six equivalent Tm(2), one Sn(2), and three equivalent Sn(1) atoms. There are three shorter (3.14 Å) and three longer (3.37 Å) Li(2)-Tm(2) bond lengths. The Li(2)-Sn(2) bond length is 3.01 Å. All Li(2)-Sn(1) bond lengths are 2.70 Å. There are two inequivalent Tm sites. In the first Tm site, Tm(1) is bonded in a 12-coordinate geometry to six equivalent Li(1) and six equivalent Sn(1) atoms. There are three shorter (3.14 Å) and three longer (3.30 Å) Tm(1)-Sn(1) bond lengths. In the second Tm site, Tm(2) is bonded in a 12-coordinate geometry to two equivalent Li(2), four equivalent Li(1), two equivalent Sn(2), and four equivalent Sn(1) atoms. There is one shorter (3.14 Å) and one longer (3.31 Å) Tm(2)-Sn(2) bond length. There are two shorter (3.20 Å) and two longer (3.25 Å) Tm(2)-Sn(1) bond lengths. There are two inequivalent Sn sites. In the first Sn site, Sn(1) is bonded in a 10-coordinate geometry to one Li(2), three equivalent Li(1), two equivalent Tm(1), and four equivalent Tm(2) atoms. In the second Sn site, Sn(2) is bonded in a 10-coordinate geometry to one Li(2), three equivalent Li(1), and six equivalent Tm(2) atoms.