MgNb2 crystallizes in the orthorhombic Fmmm space group. Mg(1) is bonded in a 12-coordinate geometry to four equivalent Mg(1) and eight equivalent Nb(1) atoms. Nb(1) is bonded in a 8-coordinate geometry to four equivalent Mg(1) and six equivalent Nb(1) atoms.
MgNb2 crystallizes in the orthorhombic Fmmm space group. Mg(1) is bonded in a 12-coordinate geometry to four equivalent Mg(1) and eight equivalent Nb(1) atoms. All Mg(1)-Mg(1) bond lengths are 2.86 Å. There are four shorter (3.06 Å) and four longer (3.39 Å) Mg(1)-Nb(1) bond lengths. Nb(1) is bonded in a 8-coordinate geometry to four equivalent Mg(1) and six equivalent Nb(1) atoms. There are two shorter (2.85 Å) and four longer (2.86 Å) Nb(1)-Nb(1) bond lengths.