Sr4Cd11 crystallizes in the tetragonal I4_1/amd space group. Sr(1) is bonded in a 7-coordinate geometry to one Cd(1), one Cd(2), and six equivalent Cd(3) atoms. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to four equivalent Sr(1) atoms. In the second Cd site, Cd(2) is bonded in a distorted hexagonal planar geometry to two equivalent Sr(1) and four equivalent Cd(3) atoms. In the third Cd site, Cd(3) is bonded in a 9-coordinate geometry to three equivalent Sr(1), one Cd(2), and five equivalent Cd(3) atoms.
Sr4Cd11 crystallizes in the tetragonal I4_1/amd space group. Sr(1) is bonded in a 7-coordinate geometry to one Cd(1), one Cd(2), and six equivalent Cd(3) atoms. The Sr(1)-Cd(1) bond length is 3.23 Å. The Sr(1)-Cd(2) bond length is 3.85 Å. There are a spread of Sr(1)-Cd(3) bond distances ranging from 3.39-3.79 Å. There are three inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 4-coordinate geometry to four equivalent Sr(1) atoms. In the second Cd site, Cd(2) is bonded in a distorted hexagonal planar geometry to two equivalent Sr(1) and four equivalent Cd(3) atoms. All Cd(2)-Cd(3) bond lengths are 2.90 Å. In the third Cd site, Cd(3) is bonded in a 9-coordinate geometry to three equivalent Sr(1), one Cd(2), and five equivalent Cd(3) atoms. There are a spread of Cd(3)-Cd(3) bond distances ranging from 3.01-3.33 Å.