CsRb2Au7 crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded in a 8-coordinate geometry to two equivalent Au(2), two equivalent Au(4), four equivalent Au(1), and four equivalent Au(3) atoms. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to four equivalent Au(1), four equivalent Au(2), and four equivalent Au(3) atoms to form RbAu12 cuboctahedra that share corners with four equivalent Rb(1)Au12 cuboctahedra, faces with two equivalent Rb(1)Au12 cuboctahedra, and faces with eight equivalent Au(3)Cs2Rb4Au6 cuboctahedra. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to two equivalent Au(1), two equivalent Au(4), four equivalent Au(2), and four equivalent Au(3) atoms. There are four inequivalent Au sites. In the first Au site, Au(1) is bonded in a 10-coordinate geometry to two equivalent Cs(1), one Rb(2), two equivalent Rb(1), one Au(1), one Au(2), one Au(4), and two equivalent Au(3) atoms. In the second Au site, Au(2) is bonded in a 10-coordinate geometry to one Cs(1), two equivalent Rb(1), two equivalent Rb(2), one Au(1), one Au(2), one Au(4), and two equivalent Au(3) atoms. In the third Au site, Au(3) is bonded to two equivalent Cs(1), two equivalent Rb(1), two equivalent Rb(2), two equivalent Au(1), two equivalent Au(2), and two equivalent Au(3) atoms to form AuCs2Rb4Au6 cuboctahedra that share corners with ten equivalent Au(3)Cs2Rb4Au6 cuboctahedra, edges with two equivalent Au(3)Cs2Rb4Au6 cuboctahedra, faces with two equivalent Au(3)Cs2Rb4Au6 cuboctahedra, and faces with four equivalent Rb(1)Au12 cuboctahedra. In the fourth Au site, Au(4) is bonded in a body-centered cubic geometry to two equivalent Cs(1), two equivalent Rb(2), two equivalent Au(1), and two equivalent Au(2) atoms.
CsRb2Au7 crystallizes in the orthorhombic Amm2 space group. Cs(1) is bonded in a 8-coordinate geometry to two equivalent Au(2), two equivalent Au(4), four equivalent Au(1), and four equivalent Au(3) atoms. Both Cs(1)-Au(2) bond lengths are 3.81 Å. Both Cs(1)-Au(4) bond lengths are 3.61 Å. All Cs(1)-Au(1) bond lengths are 3.69 Å. All Cs(1)-Au(3) bond lengths are 4.09 Å. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded to four equivalent Au(1), four equivalent Au(2), and four equivalent Au(3) atoms to form RbAu12 cuboctahedra that share corners with four equivalent Rb(1)Au12 cuboctahedra, faces with two equivalent Rb(1)Au12 cuboctahedra, and faces with eight equivalent Au(3)Cs2Rb4Au6 cuboctahedra. All Rb(1)-Au(1) bond lengths are 3.50 Å. All Rb(1)-Au(2) bond lengths are 3.50 Å. There are two shorter (3.65 Å) and two longer (3.67 Å) Rb(1)-Au(3) bond lengths. In the second Rb site, Rb(2) is bonded in a 8-coordinate geometry to two equivalent Au(1), two equivalent Au(4), four equivalent Au(2), and four equivalent Au(3) atoms. Both Rb(2)-Au(1) bond lengths are 3.83 Å. Both Rb(2)-Au(4) bond lengths are 3.57 Å. All Rb(2)-Au(2) bond lengths are 3.68 Å. All Rb(2)-Au(3) bond lengths are 4.09 Å. There are four inequivalent Au sites. In the first Au site, Au(1) is bonded in a 10-coordinate geometry to two equivalent Cs(1), one Rb(2), two equivalent Rb(1), one Au(1), one Au(2), one Au(4), and two equivalent Au(3) atoms. The Au(1)-Au(1) bond length is 2.86 Å. The Au(1)-Au(2) bond length is 2.91 Å. The Au(1)-Au(4) bond length is 2.67 Å. Both Au(1)-Au(3) bond lengths are 2.79 Å. In the second Au site, Au(2) is bonded in a 10-coordinate geometry to one Cs(1), two equivalent Rb(1), two equivalent Rb(2), one Au(1), one Au(2), one Au(4), and two equivalent Au(3) atoms. The Au(2)-Au(2) bond length is 2.85 Å. The Au(2)-Au(4) bond length is 2.65 Å. Both Au(2)-Au(3) bond lengths are 2.78 Å. In the third Au site, Au(3) is bonded to two equivalent Cs(1), two equivalent Rb(1), two equivalent Rb(2), two equivalent Au(1), two equivalent Au(2), and two equivalent Au(3) atoms to form AuCs2Rb4Au6 cuboctahedra that share corners with ten equivalent Au(3)Cs2Rb4Au6 cuboctahedra, edges with two equivalent Au(3)Cs2Rb4Au6 cuboctahedra, faces with two equivalent Au(3)Cs2Rb4Au6 cuboctahedra, and faces with four equivalent Rb(1)Au12 cuboctahedra. There is one shorter (2.83 Å) and one longer (2.86 Å) Au(3)-Au(3) bond length. In the fourth Au site, Au(4) is bonded in a body-centered cubic geometry to two equivalent Cs(1), two equivalent Rb(2), two equivalent Au(1), and two equivalent Au(2) atoms.