Sr(RhIn4)2 crystallizes in the orthorhombic Pbam space group. Sr(1) is bonded in a 13-coordinate geometry to one In(8), two equivalent In(1), two equivalent In(2), two equivalent In(4), two equivalent In(6), two equivalent In(7), and two equivalent In(9) atoms. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 9-coordinate geometry to one In(5), one In(7), one In(8), two equivalent In(4), two equivalent In(6), and two equivalent In(9) atoms. In the second Rh site, Rh(2) is bonded in a 9-coordinate geometry to one In(7), two equivalent In(1), two equivalent In(2), two equivalent In(3), and two equivalent In(5) atoms. There are nine inequivalent In sites. In the first In site, In(9) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Rh(1), one In(2), one In(4), two equivalent In(6), two equivalent In(7), and two equivalent In(8) atoms. In the second In site, In(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), two equivalent Rh(2), and one In(6) atom. In the third In site, In(2) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent Rh(2), and one In(9) atom. In the fourth In site, In(3) is bonded in a 4-coordinate geometry to four equivalent Rh(2) atoms. In the fifth In site, In(4) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent Rh(1), and one In(9) atom. In the sixth In site, In(5) is bonded in a 3-coordinate geometry to one Rh(1) and two equivalent Rh(2) atoms. In the seventh In site, In(6) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent Rh(1), one In(1), and two equivalent In(9) atoms. In the eighth In site, In(7) is bonded in a distorted linear geometry to two equivalent Sr(1), one Rh(1), one Rh(2), and two equivalent In(9) atoms. In the ninth In site, In(8) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Rh(1), and four equivalent In(9) atoms.
Sr(RhIn4)2 crystallizes in the orthorhombic Pbam space group. Sr(1) is bonded in a 13-coordinate geometry to one In(8), two equivalent In(1), two equivalent In(2), two equivalent In(4), two equivalent In(6), two equivalent In(7), and two equivalent In(9) atoms. The Sr(1)-In(8) bond length is 3.67 Å. Both Sr(1)-In(1) bond lengths are 3.44 Å. Both Sr(1)-In(2) bond lengths are 3.47 Å. Both Sr(1)-In(4) bond lengths are 3.51 Å. Both Sr(1)-In(6) bond lengths are 3.54 Å. There is one shorter (3.55 Å) and one longer (3.79 Å) Sr(1)-In(7) bond length. Both Sr(1)-In(9) bond lengths are 3.42 Å. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 9-coordinate geometry to one In(5), one In(7), one In(8), two equivalent In(4), two equivalent In(6), and two equivalent In(9) atoms. The Rh(1)-In(5) bond length is 2.74 Å. The Rh(1)-In(7) bond length is 2.66 Å. The Rh(1)-In(8) bond length is 2.66 Å. Both Rh(1)-In(4) bond lengths are 2.83 Å. Both Rh(1)-In(6) bond lengths are 2.82 Å. Both Rh(1)-In(9) bond lengths are 2.95 Å. In the second Rh site, Rh(2) is bonded in a 9-coordinate geometry to one In(7), two equivalent In(1), two equivalent In(2), two equivalent In(3), and two equivalent In(5) atoms. The Rh(2)-In(7) bond length is 2.62 Å. Both Rh(2)-In(1) bond lengths are 2.90 Å. Both Rh(2)-In(2) bond lengths are 2.88 Å. Both Rh(2)-In(3) bond lengths are 2.74 Å. There is one shorter (2.83 Å) and one longer (2.86 Å) Rh(2)-In(5) bond length. There are nine inequivalent In sites. In the first In site, In(9) is bonded in a 12-coordinate geometry to two equivalent Sr(1), two equivalent Rh(1), one In(2), one In(4), two equivalent In(6), two equivalent In(7), and two equivalent In(8) atoms. The In(9)-In(2) bond length is 3.14 Å. The In(9)-In(4) bond length is 3.13 Å. There is one shorter (3.14 Å) and one longer (3.33 Å) In(9)-In(6) bond length. Both In(9)-In(7) bond lengths are 3.15 Å. Both In(9)-In(8) bond lengths are 3.11 Å. In the second In site, In(1) is bonded in a 5-coordinate geometry to two equivalent Sr(1), two equivalent Rh(2), and one In(6) atom. The In(1)-In(6) bond length is 2.91 Å. In the third In site, In(2) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent Rh(2), and one In(9) atom. In the fourth In site, In(3) is bonded in a 4-coordinate geometry to four equivalent Rh(2) atoms. In the fifth In site, In(4) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent Rh(1), and one In(9) atom. In the sixth In site, In(5) is bonded in a 3-coordinate geometry to one Rh(1) and two equivalent Rh(2) atoms. In the seventh In site, In(6) is bonded in a 2-coordinate geometry to two equivalent Sr(1), two equivalent Rh(1), one In(1), and two equivalent In(9) atoms. In the eighth In site, In(7) is bonded in a distorted linear geometry to two equivalent Sr(1), one Rh(1), one Rh(2), and two equivalent In(9) atoms. In the ninth In site, In(8) is bonded in a distorted linear geometry to two equivalent Sr(1), two equivalent Rh(1), and four equivalent In(9) atoms.