Y2InGe2 crystallizes in the tetragonal P4/mbm space group. Y(1) is bonded in a 10-coordinate geometry to four equivalent In(1) and six equivalent Ge(1) atoms. In(1) is bonded to eight equivalent Y(1) and four equivalent Ge(1) atoms to form a mixture of face and corner-sharing InY8Ge4 cuboctahedra. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Y(1), two equivalent In(1), and one Ge(1) atom.
Y2InGe2 crystallizes in the tetragonal P4/mbm space group. Y(1) is bonded in a 10-coordinate geometry to four equivalent In(1) and six equivalent Ge(1) atoms. All Y(1)-In(1) bond lengths are 3.43 Å. There are two shorter (2.96 Å) and four longer (3.08 Å) Y(1)-Ge(1) bond lengths. In(1) is bonded to eight equivalent Y(1) and four equivalent Ge(1) atoms to form a mixture of face and corner-sharing InY8Ge4 cuboctahedra. All In(1)-Ge(1) bond lengths are 2.96 Å. Ge(1) is bonded in a 9-coordinate geometry to six equivalent Y(1), two equivalent In(1), and one Ge(1) atom. The Ge(1)-Ge(1) bond length is 2.55 Å.