Mg6SnC crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(4), one Sn(1), and two equivalent C(1) atoms. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(4) and two equivalent Sn(1) atoms. In the third Mg site, Mg(3) is bonded in a distorted single-bond geometry to two equivalent Sn(1) and one C(1) atom. In the fourth Mg site, Mg(4) is bonded in a 6-coordinate geometry to two equivalent Mg(2) and four equivalent Mg(1) atoms. Sn(1) is bonded in a 8-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), and four equivalent Mg(3) atoms. C(1) is bonded in a distorted hexagonal planar geometry to two equivalent Mg(3) and four equivalent Mg(1) atoms.
Mg6SnC crystallizes in the orthorhombic Amm2 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a distorted bent 120 degrees geometry to two equivalent Mg(4), one Sn(1), and two equivalent C(1) atoms. Both Mg(1)-Mg(4) bond lengths are 2.96 Å. The Mg(1)-Sn(1) bond length is 3.31 Å. Both Mg(1)-C(1) bond lengths are 2.68 Å. In the second Mg site, Mg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(4) and two equivalent Sn(1) atoms. Both Mg(2)-Mg(4) bond lengths are 2.92 Å. Both Mg(2)-Sn(1) bond lengths are 2.98 Å. In the third Mg site, Mg(3) is bonded in a distorted single-bond geometry to two equivalent Sn(1) and one C(1) atom. Both Mg(3)-Sn(1) bond lengths are 2.95 Å. The Mg(3)-C(1) bond length is 2.22 Å. In the fourth Mg site, Mg(4) is bonded in a 6-coordinate geometry to two equivalent Mg(2) and four equivalent Mg(1) atoms. Sn(1) is bonded in a 8-coordinate geometry to two equivalent Mg(1), two equivalent Mg(2), and four equivalent Mg(3) atoms. C(1) is bonded in a distorted hexagonal planar geometry to two equivalent Mg(3) and four equivalent Mg(1) atoms.