SrIn4 crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded in a 16-coordinate geometry to eight equivalent In(1) and eight equivalent In(2) atoms. There are two inequivalent In sites. In the first In site, In(1) is bonded to four equivalent Sr(1) and four equivalent In(2) atoms to form a mixture of distorted corner, edge, and face-sharing InSr4In4 cuboctahedra. In the second In site, In(2) is bonded in a 9-coordinate geometry to four equivalent Sr(1), one In(2), and four equivalent In(1) atoms.
SrIn4 crystallizes in the tetragonal I4/mmm space group. Sr(1) is bonded in a 16-coordinate geometry to eight equivalent In(1) and eight equivalent In(2) atoms. All Sr(1)-In(1) bond lengths are 3.90 Å. All Sr(1)-In(2) bond lengths are 3.75 Å. There are two inequivalent In sites. In the first In site, In(1) is bonded to four equivalent Sr(1) and four equivalent In(2) atoms to form a mixture of distorted corner, edge, and face-sharing InSr4In4 cuboctahedra. All In(1)-In(2) bond lengths are 2.95 Å. In the second In site, In(2) is bonded in a 9-coordinate geometry to four equivalent Sr(1), one In(2), and four equivalent In(1) atoms. The In(2)-In(2) bond length is 2.78 Å.