KSr2Cd2Sb3 is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 4-coordinate geometry to one Cd(2), two equivalent Cd(1), two equivalent Sb(1), and three equivalent Sb(2) atoms. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one Cd(1), two equivalent Cd(2), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(3) atoms. In the second Sr site, Sr(2) is bonded in a 11-coordinate geometry to two equivalent Cd(2), three equivalent Cd(1), one Sb(1), two equivalent Sb(2), and three equivalent Sb(3) atoms. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 10-coordinate geometry to two equivalent K(1), one Sr(1), three equivalent Sr(2), one Sb(1), one Sb(2), and two equivalent Sb(3) atoms. In the second Cd site, Cd(2) is bonded in a 9-coordinate geometry to one K(1), two equivalent Sr(1), two equivalent Sr(2), one Sb(2), one Sb(3), and two equivalent Sb(1) atoms. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 7-coordinate geometry to two equivalent K(1), one Sr(2), two equivalent Sr(1), one Cd(1), and two equivalent Cd(2) atoms. In the second Sb site, Sb(2) is bonded in a 9-coordinate geometry to three equivalent K(1), two equivalent Sr(1), two equivalent Sr(2), one Cd(1), and one Cd(2) atom. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent Sr(1), three equivalent Sr(2), one Cd(2), and two equivalent Cd(1) atoms.
KSr2Cd2Sb3 is Magnesium tetraboride-derived structured and crystallizes in the orthorhombic Pnma space group. K(1) is bonded in a 4-coordinate geometry to one Cd(2), two equivalent Cd(1), two equivalent Sb(1), and three equivalent Sb(2) atoms. The K(1)-Cd(2) bond length is 3.93 Å. Both K(1)-Cd(1) bond lengths are 3.67 Å. Both K(1)-Sb(1) bond lengths are 3.47 Å. There are two shorter (3.62 Å) and one longer (4.03 Å) K(1)-Sb(2) bond length. There are two inequivalent Sr sites. In the first Sr site, Sr(1) is bonded in a 7-coordinate geometry to one Cd(1), two equivalent Cd(2), two equivalent Sb(1), two equivalent Sb(2), and two equivalent Sb(3) atoms. The Sr(1)-Cd(1) bond length is 3.49 Å. Both Sr(1)-Cd(2) bond lengths are 3.90 Å. There is one shorter (3.40 Å) and one longer (3.47 Å) Sr(1)-Sb(1) bond length. Both Sr(1)-Sb(2) bond lengths are 3.44 Å. Both Sr(1)-Sb(3) bond lengths are 3.58 Å. In the second Sr site, Sr(2) is bonded in a 11-coordinate geometry to two equivalent Cd(2), three equivalent Cd(1), one Sb(1), two equivalent Sb(2), and three equivalent Sb(3) atoms. Both Sr(2)-Cd(2) bond lengths are 3.46 Å. There are two shorter (3.72 Å) and one longer (3.91 Å) Sr(2)-Cd(1) bond length. The Sr(2)-Sb(1) bond length is 3.90 Å. Both Sr(2)-Sb(2) bond lengths are 3.45 Å. There is one shorter (3.39 Å) and two longer (3.49 Å) Sr(2)-Sb(3) bond lengths. There are two inequivalent Cd sites. In the first Cd site, Cd(1) is bonded in a 10-coordinate geometry to two equivalent K(1), one Sr(1), three equivalent Sr(2), one Sb(1), one Sb(2), and two equivalent Sb(3) atoms. The Cd(1)-Sb(1) bond length is 3.00 Å. The Cd(1)-Sb(2) bond length is 2.92 Å. Both Cd(1)-Sb(3) bond lengths are 3.04 Å. In the second Cd site, Cd(2) is bonded in a 9-coordinate geometry to one K(1), two equivalent Sr(1), two equivalent Sr(2), one Sb(2), one Sb(3), and two equivalent Sb(1) atoms. The Cd(2)-Sb(2) bond length is 3.03 Å. The Cd(2)-Sb(3) bond length is 3.14 Å. Both Cd(2)-Sb(1) bond lengths are 2.87 Å. There are three inequivalent Sb sites. In the first Sb site, Sb(1) is bonded in a 7-coordinate geometry to two equivalent K(1), one Sr(2), two equivalent Sr(1), one Cd(1), and two equivalent Cd(2) atoms. In the second Sb site, Sb(2) is bonded in a 9-coordinate geometry to three equivalent K(1), two equivalent Sr(1), two equivalent Sr(2), one Cd(1), and one Cd(2) atom. In the third Sb site, Sb(3) is bonded in a 8-coordinate geometry to two equivalent Sr(1), three equivalent Sr(2), one Cd(2), and two equivalent Cd(1) atoms.