CsK2AuO2 crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 2-coordinate geometry to one O(1) and one O(2) atom. K(1) is bonded in a distorted see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. Au(1) is bonded in a distorted linear geometry to one O(1) and one O(2) atom. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Cs(1), four equivalent K(1), and one Au(1) atom to form a mixture of distorted edge, corner, and face-sharing OCsK4Au octahedra. The corner-sharing octahedral tilt angles range from 1-59°. In the second O site, O(2) is bonded to one Cs(1), four equivalent K(1), and one Au(1) atom to form a mixture of distorted edge, corner, and face-sharing OCsK4Au octahedra. The corner-sharing octahedral tilt angles range from 1-60°.
CsK2AuO2 crystallizes in the orthorhombic Pnma space group. Cs(1) is bonded in a 2-coordinate geometry to one O(1) and one O(2) atom. The Cs(1)-O(1) bond length is 2.93 Å. The Cs(1)-O(2) bond length is 2.77 Å. K(1) is bonded in a distorted see-saw-like geometry to two equivalent O(1) and two equivalent O(2) atoms. There is one shorter (2.77 Å) and one longer (2.80 Å) K(1)-O(1) bond length. There is one shorter (2.83 Å) and one longer (2.88 Å) K(1)-O(2) bond length. Au(1) is bonded in a distorted linear geometry to one O(1) and one O(2) atom. The Au(1)-O(1) bond length is 2.04 Å. The Au(1)-O(2) bond length is 2.04 Å. There are two inequivalent O sites. In the first O site, O(1) is bonded to one Cs(1), four equivalent K(1), and one Au(1) atom to form a mixture of distorted edge, corner, and face-sharing OCsK4Au octahedra. The corner-sharing octahedral tilt angles range from 1-59°. In the second O site, O(2) is bonded to one Cs(1), four equivalent K(1), and one Au(1) atom to form a mixture of distorted edge, corner, and face-sharing OCsK4Au octahedra. The corner-sharing octahedral tilt angles range from 1-60°.