Rb2PtOBr4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent Br(2), two equivalent Br(3), and four equivalent Br(1) atoms. Pt(1) is bonded in a rectangular see-saw-like geometry to one Br(2), one Br(3), and two equivalent Br(1) atoms. O(1) is bonded in a water-like geometry to two equivalent Rb(1) atoms. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded to four equivalent Rb(1) and one Pt(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb4Pt square pyramids. In the second Br site, Br(2) is bonded to four equivalent Rb(1) and one Pt(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb4Pt square pyramids. In the third Br site, Br(3) is bonded to four equivalent Rb(1) and one Pt(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb4Pt square pyramids.
Rb2PtOBr4 crystallizes in the orthorhombic Pnma space group. Rb(1) is bonded in a 9-coordinate geometry to one O(1), two equivalent Br(2), two equivalent Br(3), and four equivalent Br(1) atoms. The Rb(1)-O(1) bond length is 2.95 Å. There is one shorter (3.69 Å) and one longer (3.74 Å) Rb(1)-Br(2) bond length. There is one shorter (3.61 Å) and one longer (3.72 Å) Rb(1)-Br(3) bond length. There are a spread of Rb(1)-Br(1) bond distances ranging from 3.56-3.64 Å. Pt(1) is bonded in a rectangular see-saw-like geometry to one Br(2), one Br(3), and two equivalent Br(1) atoms. The Pt(1)-Br(2) bond length is 2.44 Å. The Pt(1)-Br(3) bond length is 2.45 Å. Both Pt(1)-Br(1) bond lengths are 2.46 Å. O(1) is bonded in a water-like geometry to two equivalent Rb(1) atoms. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded to four equivalent Rb(1) and one Pt(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb4Pt square pyramids. In the second Br site, Br(2) is bonded to four equivalent Rb(1) and one Pt(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb4Pt square pyramids. In the third Br site, Br(3) is bonded to four equivalent Rb(1) and one Pt(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb4Pt square pyramids.