Rb2AgBr3 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one Br(3), two equivalent Br(1), and four equivalent Br(2) atoms. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Br(2), three equivalent Br(1), and three equivalent Br(3) atoms. Ag(1) is bonded to one Br(1), one Br(2), and two equivalent Br(3) atoms to form corner-sharing AgBr4 tetrahedra. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded to two equivalent Rb(1), three equivalent Rb(2), and one Ag(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb5Ag octahedra. The corner-sharing octahedral tilt angles range from 51-56°. In the second Br site, Br(2) is bonded to one Rb(2), four equivalent Rb(1), and one Ag(1) atom to form a mixture of face, corner, and edge-sharing BrRb5Ag octahedra. The corner-sharing octahedral tilt angles range from 24-56°. In the third Br site, Br(3) is bonded in a 6-coordinate geometry to one Rb(1), three equivalent Rb(2), and two equivalent Ag(1) atoms.
Rb2AgBr3 crystallizes in the orthorhombic Pnma space group. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a 7-coordinate geometry to one Br(3), two equivalent Br(1), and four equivalent Br(2) atoms. The Rb(1)-Br(3) bond length is 3.60 Å. Both Rb(1)-Br(1) bond lengths are 3.55 Å. All Rb(1)-Br(2) bond lengths are 3.47 Å. In the second Rb site, Rb(2) is bonded in a 7-coordinate geometry to one Br(2), three equivalent Br(1), and three equivalent Br(3) atoms. The Rb(2)-Br(2) bond length is 3.47 Å. There are two shorter (3.40 Å) and one longer (3.58 Å) Rb(2)-Br(1) bond length. There are two shorter (3.53 Å) and one longer (3.62 Å) Rb(2)-Br(3) bond length. Ag(1) is bonded to one Br(1), one Br(2), and two equivalent Br(3) atoms to form corner-sharing AgBr4 tetrahedra. The Ag(1)-Br(1) bond length is 2.70 Å. The Ag(1)-Br(2) bond length is 2.71 Å. Both Ag(1)-Br(3) bond lengths are 2.73 Å. There are three inequivalent Br sites. In the first Br site, Br(1) is bonded to two equivalent Rb(1), three equivalent Rb(2), and one Ag(1) atom to form a mixture of distorted face, corner, and edge-sharing BrRb5Ag octahedra. The corner-sharing octahedral tilt angles range from 51-56°. In the second Br site, Br(2) is bonded to one Rb(2), four equivalent Rb(1), and one Ag(1) atom to form a mixture of face, corner, and edge-sharing BrRb5Ag octahedra. The corner-sharing octahedral tilt angles range from 24-56°. In the third Br site, Br(3) is bonded in a 6-coordinate geometry to one Rb(1), three equivalent Rb(2), and two equivalent Ag(1) atoms.