K2SrIn7 crystallizes in the orthorhombic Cmcm space group. K(1) is bonded in a 9-coordinate geometry to two equivalent In(4), four equivalent In(1), and five equivalent In(2) atoms. Sr(1) is bonded in a 15-coordinate geometry to two equivalent In(2), three equivalent In(3), four equivalent In(1), and six equivalent In(4) atoms. There are four inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to four equivalent K(1), two equivalent Sr(1), one In(3), one In(4), and two equivalent In(2) atoms. In the second In site, In(2) is bonded in a 10-coordinate geometry to five equivalent K(1), one Sr(1), one In(2), one In(4), and two equivalent In(1) atoms. In the third In site, In(3) is bonded in a 9-coordinate geometry to three equivalent Sr(1), two equivalent In(1), and four equivalent In(4) atoms. In the fourth In site, In(4) is bonded in a 10-coordinate geometry to two equivalent K(1), three equivalent Sr(1), one In(1), one In(2), one In(4), and two equivalent In(3) atoms.
K2SrIn7 crystallizes in the orthorhombic Cmcm space group. K(1) is bonded in a 9-coordinate geometry to two equivalent In(4), four equivalent In(1), and five equivalent In(2) atoms. Both K(1)-In(4) bond lengths are 3.57 Å. There are a spread of K(1)-In(1) bond distances ranging from 3.69-4.01 Å. There are a spread of K(1)-In(2) bond distances ranging from 3.60-3.84 Å. Sr(1) is bonded in a 15-coordinate geometry to two equivalent In(2), three equivalent In(3), four equivalent In(1), and six equivalent In(4) atoms. Both Sr(1)-In(2) bond lengths are 3.87 Å. There are two shorter (3.57 Å) and one longer (3.62 Å) Sr(1)-In(3) bond length. All Sr(1)-In(1) bond lengths are 3.55 Å. There are four shorter (3.87 Å) and two longer (3.94 Å) Sr(1)-In(4) bond lengths. There are four inequivalent In sites. In the first In site, In(1) is bonded in a 10-coordinate geometry to four equivalent K(1), two equivalent Sr(1), one In(3), one In(4), and two equivalent In(2) atoms. The In(1)-In(3) bond length is 3.16 Å. The In(1)-In(4) bond length is 3.05 Å. Both In(1)-In(2) bond lengths are 2.99 Å. In the second In site, In(2) is bonded in a 10-coordinate geometry to five equivalent K(1), one Sr(1), one In(2), one In(4), and two equivalent In(1) atoms. The In(2)-In(2) bond length is 3.04 Å. The In(2)-In(4) bond length is 3.05 Å. In the third In site, In(3) is bonded in a 9-coordinate geometry to three equivalent Sr(1), two equivalent In(1), and four equivalent In(4) atoms. All In(3)-In(4) bond lengths are 3.20 Å. In the fourth In site, In(4) is bonded in a 10-coordinate geometry to two equivalent K(1), three equivalent Sr(1), one In(1), one In(2), one In(4), and two equivalent In(3) atoms. The In(4)-In(4) bond length is 3.04 Å.