RbB3GeO7 crystallizes in the orthorhombic Pna2_1 space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded to one O(1), one O(3), one O(6), and one O(7) atom to form BO4 tetrahedra that share corners with two equivalent Ge(1)O4 tetrahedra. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(4) atom. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(5) atom. Ge(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent B(1)O4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one B(2), and one Ge(1) atom. In the second O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(3), and one Ge(1) atom. In the third O site, O(6) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one Ge(1) atom. In the fourth O site, O(7) is bonded in a bent 120 degrees geometry to one B(1) and one Ge(1) atom. In the fifth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one B(1), and one B(3) atom. In the sixth O site, O(2) is bonded in a bent 120 degrees geometry to one Rb(1), one B(2), and one B(3) atom. In the seventh O site, O(3) is bonded in a bent 120 degrees geometry to one Rb(1), one B(1), and one B(2) atom.
RbB3GeO7 crystallizes in the orthorhombic Pna2_1 space group. Rb(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), two equivalent O(5), and two equivalent O(6) atoms. The Rb(1)-O(1) bond length is 2.86 Å. The Rb(1)-O(2) bond length is 3.03 Å. The Rb(1)-O(3) bond length is 2.97 Å. The Rb(1)-O(4) bond length is 3.05 Å. There is one shorter (3.11 Å) and one longer (3.34 Å) Rb(1)-O(5) bond length. There is one shorter (2.94 Å) and one longer (3.13 Å) Rb(1)-O(6) bond length. There are three inequivalent B sites. In the first B site, B(1) is bonded to one O(1), one O(3), one O(6), and one O(7) atom to form BO4 tetrahedra that share corners with two equivalent Ge(1)O4 tetrahedra. The B(1)-O(1) bond length is 1.47 Å. The B(1)-O(3) bond length is 1.50 Å. The B(1)-O(6) bond length is 1.47 Å. The B(1)-O(7) bond length is 1.46 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(2), one O(3), and one O(4) atom. The B(2)-O(2) bond length is 1.40 Å. The B(2)-O(3) bond length is 1.35 Å. The B(2)-O(4) bond length is 1.37 Å. In the third B site, B(3) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(5) atom. The B(3)-O(1) bond length is 1.35 Å. The B(3)-O(2) bond length is 1.38 Å. The B(3)-O(5) bond length is 1.38 Å. Ge(1) is bonded to one O(4), one O(5), one O(6), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent B(1)O4 tetrahedra. The Ge(1)-O(4) bond length is 1.76 Å. The Ge(1)-O(5) bond length is 1.77 Å. The Ge(1)-O(6) bond length is 1.74 Å. The Ge(1)-O(7) bond length is 1.73 Å. There are seven inequivalent O sites. In the first O site, O(4) is bonded in a 2-coordinate geometry to one Rb(1), one B(2), and one Ge(1) atom. In the second O site, O(5) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(3), and one Ge(1) atom. In the third O site, O(6) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one B(1), and one Ge(1) atom. In the fourth O site, O(7) is bonded in a bent 120 degrees geometry to one B(1) and one Ge(1) atom. In the fifth O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one B(1), and one B(3) atom. In the sixth O site, O(2) is bonded in a bent 120 degrees geometry to one Rb(1), one B(2), and one B(3) atom. In the seventh O site, O(3) is bonded in a bent 120 degrees geometry to one Rb(1), one B(1), and one B(2) atom.