ZrO2 is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. Zr(1) is bonded in a 9-coordinate geometry to four equivalent O(2) and five equivalent O(1) atoms. There are two inequivalent O sites. In the first O site, O(2) is bonded to four equivalent Zr(1) atoms to form a mixture of corner and edge-sharing OZr4 tetrahedra. In the second O site, O(1) is bonded in a 5-coordinate geometry to five equivalent Zr(1) atoms.
ZrO2 is Cotunnite structured and crystallizes in the orthorhombic Pnma space group. Zr(1) is bonded in a 9-coordinate geometry to four equivalent O(2) and five equivalent O(1) atoms. There are a spread of Zr(1)-O(2) bond distances ranging from 2.17-2.19 Å. There are a spread of Zr(1)-O(1) bond distances ranging from 2.19-2.62 Å. There are two inequivalent O sites. In the first O site, O(2) is bonded to four equivalent Zr(1) atoms to form a mixture of corner and edge-sharing OZr4 tetrahedra. In the second O site, O(1) is bonded in a 5-coordinate geometry to five equivalent Zr(1) atoms.