MgHf2 crystallizes in the tetragonal P4_2/mnm space group. Mg(1) is bonded to six equivalent Hf(1) atoms to form a mixture of distorted corner and edge-sharing MgHf6 octahedra. The corner-sharing octahedral tilt angles are 61°. Hf(1) is bonded in a 4-coordinate geometry to three equivalent Mg(1) and one Hf(1) atom.
MgHf2 crystallizes in the tetragonal P4_2/mnm space group. Mg(1) is bonded to six equivalent Hf(1) atoms to form a mixture of distorted corner and edge-sharing MgHf6 octahedra. The corner-sharing octahedral tilt angles are 61°. There are two shorter (2.65 Å) and four longer (2.83 Å) Mg(1)-Hf(1) bond lengths. Hf(1) is bonded in a 4-coordinate geometry to three equivalent Mg(1) and one Hf(1) atom. The Hf(1)-Hf(1) bond length is 2.73 Å.