K3IrSnCl8 crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(6), two equivalent Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms. In the second K site, K(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(3), one Cl(6), two equivalent Cl(4), and four equivalent Cl(2) atoms. Ir(1) is bonded in an octahedral geometry to one Sn(1), one Cl(1), one Cl(3), one Cl(5), and two equivalent Cl(4) atoms. Sn(1) is bonded in a distorted rectangular see-saw-like geometry to one Ir(1), one Cl(6), and two equivalent Cl(2) atoms. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Ir(1) atom. In the second Cl site, Cl(2) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), and one Sn(1) atom. In the third Cl site, Cl(3) is bonded to one K(2), four equivalent K(1), and one Ir(1) atom to form distorted corner-sharing ClK5Ir octahedra. The corner-sharing octahedral tilt angles are 43°. In the fourth Cl site, Cl(4) is bonded in a rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Ir(1) atom. In the fifth Cl site, Cl(5) is bonded in a 5-coordinate geometry to four equivalent K(1) and one Ir(1) atom. In the sixth Cl site, Cl(6) is bonded in a distorted rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Sn(1) atom.
K3IrSnCl8 crystallizes in the orthorhombic Pmn2_1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(2), one Cl(6), two equivalent Cl(3), two equivalent Cl(4), and two equivalent Cl(5) atoms. The K(1)-Cl(1) bond length is 3.19 Å. The K(1)-Cl(2) bond length is 3.50 Å. The K(1)-Cl(6) bond length is 3.36 Å. There is one shorter (3.37 Å) and one longer (3.41 Å) K(1)-Cl(3) bond length. There is one shorter (3.15 Å) and one longer (3.28 Å) K(1)-Cl(4) bond length. There is one shorter (3.37 Å) and one longer (3.64 Å) K(1)-Cl(5) bond length. In the second K site, K(2) is bonded in a 9-coordinate geometry to one Cl(1), one Cl(3), one Cl(6), two equivalent Cl(4), and four equivalent Cl(2) atoms. The K(2)-Cl(1) bond length is 3.24 Å. The K(2)-Cl(3) bond length is 3.58 Å. The K(2)-Cl(6) bond length is 3.40 Å. Both K(2)-Cl(4) bond lengths are 3.28 Å. There are two shorter (3.54 Å) and two longer (3.56 Å) K(2)-Cl(2) bond lengths. Ir(1) is bonded in an octahedral geometry to one Sn(1), one Cl(1), one Cl(3), one Cl(5), and two equivalent Cl(4) atoms. The Ir(1)-Sn(1) bond length is 2.54 Å. The Ir(1)-Cl(1) bond length is 2.37 Å. The Ir(1)-Cl(3) bond length is 2.46 Å. The Ir(1)-Cl(5) bond length is 2.40 Å. Both Ir(1)-Cl(4) bond lengths are 2.39 Å. Sn(1) is bonded in a distorted rectangular see-saw-like geometry to one Ir(1), one Cl(6), and two equivalent Cl(2) atoms. The Sn(1)-Cl(6) bond length is 2.45 Å. Both Sn(1)-Cl(2) bond lengths are 2.42 Å. There are six inequivalent Cl sites. In the first Cl site, Cl(1) is bonded in a rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Ir(1) atom. In the second Cl site, Cl(2) is bonded in a distorted single-bond geometry to one K(1), two equivalent K(2), and one Sn(1) atom. In the third Cl site, Cl(3) is bonded to one K(2), four equivalent K(1), and one Ir(1) atom to form distorted corner-sharing ClK5Ir octahedra. The corner-sharing octahedral tilt angles are 43°. In the fourth Cl site, Cl(4) is bonded in a rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Ir(1) atom. In the fifth Cl site, Cl(5) is bonded in a 5-coordinate geometry to four equivalent K(1) and one Ir(1) atom. In the sixth Cl site, Cl(6) is bonded in a distorted rectangular see-saw-like geometry to one K(2), two equivalent K(1), and one Sn(1) atom.