K2ZnCl4 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms. In the second K site, K(2) is bonded in a 8-coordinate geometry to one Cl(3), two equivalent Cl(1), two equivalent Cl(4), and three equivalent Cl(2) atoms. Zn(1) is bonded in a tetrahedral geometry to one Cl(1), one Cl(2), one Cl(3), and one Cl(4) atom. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to two equivalent K(1), two equivalent K(2), and one Zn(1) atom to form distorted corner-sharing ClK4Zn square pyramids. In the second Cl site, Cl(2) is bonded in a 6-coordinate geometry to two equivalent K(1), three equivalent K(2), and one Zn(1) atom. In the third Cl site, Cl(3) is bonded in a distorted see-saw-like geometry to one K(2), two equivalent K(1), and one Zn(1) atom. In the fourth Cl site, Cl(4) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Zn(1) atom.
K2ZnCl4 crystallizes in the orthorhombic Pna2_1 space group. There are two inequivalent K sites. In the first K site, K(1) is bonded in a 8-coordinate geometry to two equivalent Cl(1), two equivalent Cl(2), two equivalent Cl(3), and two equivalent Cl(4) atoms. There is one shorter (3.18 Å) and one longer (3.22 Å) K(1)-Cl(1) bond length. There is one shorter (3.17 Å) and one longer (3.23 Å) K(1)-Cl(2) bond length. There is one shorter (3.22 Å) and one longer (3.52 Å) K(1)-Cl(3) bond length. There is one shorter (3.22 Å) and one longer (3.31 Å) K(1)-Cl(4) bond length. In the second K site, K(2) is bonded in a 8-coordinate geometry to one Cl(3), two equivalent Cl(1), two equivalent Cl(4), and three equivalent Cl(2) atoms. The K(2)-Cl(3) bond length is 3.10 Å. There is one shorter (3.26 Å) and one longer (3.37 Å) K(2)-Cl(1) bond length. There is one shorter (3.42 Å) and one longer (3.56 Å) K(2)-Cl(4) bond length. There are a spread of K(2)-Cl(2) bond distances ranging from 3.36-3.65 Å. Zn(1) is bonded in a tetrahedral geometry to one Cl(1), one Cl(2), one Cl(3), and one Cl(4) atom. The Zn(1)-Cl(1) bond length is 2.27 Å. The Zn(1)-Cl(2) bond length is 2.28 Å. The Zn(1)-Cl(3) bond length is 2.24 Å. The Zn(1)-Cl(4) bond length is 2.25 Å. There are four inequivalent Cl sites. In the first Cl site, Cl(1) is bonded to two equivalent K(1), two equivalent K(2), and one Zn(1) atom to form distorted corner-sharing ClK4Zn square pyramids. In the second Cl site, Cl(2) is bonded in a 6-coordinate geometry to two equivalent K(1), three equivalent K(2), and one Zn(1) atom. In the third Cl site, Cl(3) is bonded in a distorted see-saw-like geometry to one K(2), two equivalent K(1), and one Zn(1) atom. In the fourth Cl site, Cl(4) is bonded in a 5-coordinate geometry to two equivalent K(1), two equivalent K(2), and one Zn(1) atom.