BaMg6Sn crystallizes in the orthorhombic Amm2 space group. Ba(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Sn(1) atoms to form a mixture of face and corner-sharing BaMg10Sn2 cuboctahedra. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Ba(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and one Sn(1) atom. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to two equivalent Ba(1), one Mg(2), one Mg(4), two equivalent Mg(1), and two equivalent Sn(1) atoms. In the third Mg site, Mg(3) is bonded in a distorted water-like geometry to two equivalent Mg(4), four equivalent Mg(1), and two equivalent Sn(1) atoms. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Ba(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to two equivalent Ba(1), two equivalent Mg(1), two equivalent Mg(3), and four equivalent Mg(2) atoms.
BaMg6Sn crystallizes in the orthorhombic Amm2 space group. Ba(1) is bonded to two equivalent Mg(4), four equivalent Mg(1), four equivalent Mg(2), and two equivalent Sn(1) atoms to form a mixture of face and corner-sharing BaMg10Sn2 cuboctahedra. Both Ba(1)-Mg(4) bond lengths are 3.44 Å. There are two shorter (3.51 Å) and two longer (3.58 Å) Ba(1)-Mg(1) bond lengths. All Ba(1)-Mg(2) bond lengths are 3.43 Å. Both Ba(1)-Sn(1) bond lengths are 3.37 Å. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 11-coordinate geometry to two equivalent Ba(1), two equivalent Mg(1), two equivalent Mg(2), two equivalent Mg(3), two equivalent Mg(4), and one Sn(1) atom. There is one shorter (3.34 Å) and one longer (3.40 Å) Mg(1)-Mg(1) bond length. Both Mg(1)-Mg(2) bond lengths are 3.27 Å. Both Mg(1)-Mg(3) bond lengths are 3.33 Å. Both Mg(1)-Mg(4) bond lengths are 3.24 Å. The Mg(1)-Sn(1) bond length is 3.42 Å. In the second Mg site, Mg(2) is bonded in a 8-coordinate geometry to two equivalent Ba(1), one Mg(2), one Mg(4), two equivalent Mg(1), and two equivalent Sn(1) atoms. The Mg(2)-Mg(2) bond length is 3.10 Å. The Mg(2)-Mg(4) bond length is 3.21 Å. Both Mg(2)-Sn(1) bond lengths are 3.23 Å. In the third Mg site, Mg(3) is bonded in a distorted water-like geometry to two equivalent Mg(4), four equivalent Mg(1), and two equivalent Sn(1) atoms. Both Mg(3)-Mg(4) bond lengths are 3.38 Å. Both Mg(3)-Sn(1) bond lengths are 3.39 Å. In the fourth Mg site, Mg(4) is bonded in a 10-coordinate geometry to two equivalent Ba(1), two equivalent Mg(2), two equivalent Mg(3), and four equivalent Mg(1) atoms. Sn(1) is bonded in a 10-coordinate geometry to two equivalent Ba(1), two equivalent Mg(1), two equivalent Mg(3), and four equivalent Mg(2) atoms.