K2Zr2O5 crystallizes in the orthorhombic Pnna space group. K(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. Zr(1) is bonded to one O(1), one O(2), one O(3), and three equivalent O(4) atoms to form a mixture of edge, face, and corner-sharing ZrO6 octahedra. The corner-sharing octahedral tilt angles range from 14-49°. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent K(1) and two equivalent Zr(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to four equivalent K(1) and two equivalent Zr(1) atoms. In the third O site, O(3) is bonded in a tetrahedral geometry to two equivalent K(1) and two equivalent Zr(1) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent K(1) and three equivalent Zr(1) atoms.
K2Zr2O5 crystallizes in the orthorhombic Pnna space group. K(1) is bonded in a 7-coordinate geometry to one O(3), two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms. The K(1)-O(3) bond length is 2.56 Å. There is one shorter (3.01 Å) and one longer (3.05 Å) K(1)-O(1) bond length. There is one shorter (2.72 Å) and one longer (3.03 Å) K(1)-O(2) bond length. There is one shorter (2.71 Å) and one longer (3.24 Å) K(1)-O(4) bond length. Zr(1) is bonded to one O(1), one O(2), one O(3), and three equivalent O(4) atoms to form a mixture of edge, face, and corner-sharing ZrO6 octahedra. The corner-sharing octahedral tilt angles range from 14-49°. The Zr(1)-O(1) bond length is 2.05 Å. The Zr(1)-O(2) bond length is 2.09 Å. The Zr(1)-O(3) bond length is 2.03 Å. There are a spread of Zr(1)-O(4) bond distances ranging from 2.09-2.26 Å. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted linear geometry to four equivalent K(1) and two equivalent Zr(1) atoms. In the second O site, O(2) is bonded in a 6-coordinate geometry to four equivalent K(1) and two equivalent Zr(1) atoms. In the third O site, O(3) is bonded in a tetrahedral geometry to two equivalent K(1) and two equivalent Zr(1) atoms. In the fourth O site, O(4) is bonded in a 4-coordinate geometry to two equivalent K(1) and three equivalent Zr(1) atoms.