MgHg5 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 10-coordinate geometry to two equivalent Hg(2), two equivalent Hg(4), two equivalent Hg(5), and four equivalent Hg(1) atoms. There are five inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1), two equivalent Hg(2), two equivalent Hg(3), and two equivalent Hg(4) atoms. In the second Hg site, Hg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Hg(1), and two equivalent Hg(3) atoms. In the third Hg site, Hg(3) is bonded in a 10-coordinate geometry to two equivalent Hg(1), two equivalent Hg(2), two equivalent Hg(5), and four equivalent Hg(4) atoms. In the fourth Hg site, Hg(4) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Hg(1), and four equivalent Hg(3) atoms. In the fifth Hg site, Hg(5) is bonded in a 2-coordinate geometry to two equivalent Mg(1) and two equivalent Hg(3) atoms.
MgHg5 crystallizes in the orthorhombic Amm2 space group. Mg(1) is bonded in a 10-coordinate geometry to two equivalent Hg(2), two equivalent Hg(4), two equivalent Hg(5), and four equivalent Hg(1) atoms. Both Mg(1)-Hg(2) bond lengths are 3.14 Å. Both Mg(1)-Hg(4) bond lengths are 3.06 Å. Both Mg(1)-Hg(5) bond lengths are 3.01 Å. All Mg(1)-Hg(1) bond lengths are 3.27 Å. There are five inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a 10-coordinate geometry to four equivalent Mg(1), two equivalent Hg(2), two equivalent Hg(3), and two equivalent Hg(4) atoms. Both Hg(1)-Hg(2) bond lengths are 3.08 Å. Both Hg(1)-Hg(3) bond lengths are 3.15 Å. Both Hg(1)-Hg(4) bond lengths are 3.13 Å. In the second Hg site, Hg(2) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Hg(1), and two equivalent Hg(3) atoms. Both Hg(2)-Hg(3) bond lengths are 3.10 Å. In the third Hg site, Hg(3) is bonded in a 10-coordinate geometry to two equivalent Hg(1), two equivalent Hg(2), two equivalent Hg(5), and four equivalent Hg(4) atoms. Both Hg(3)-Hg(5) bond lengths are 3.20 Å. All Hg(3)-Hg(4) bond lengths are 3.30 Å. In the fourth Hg site, Hg(4) is bonded in a 2-coordinate geometry to two equivalent Mg(1), two equivalent Hg(1), and four equivalent Hg(3) atoms. In the fifth Hg site, Hg(5) is bonded in a 2-coordinate geometry to two equivalent Mg(1) and two equivalent Hg(3) atoms.