CsB3GeO7 crystallizes in the orthorhombic Pna2_1 space group. Cs(1) is bonded in a 10-coordinate geometry to one O(1), one O(3), one O(5), one O(6), two equivalent O(2), two equivalent O(4), and two equivalent O(7) atoms. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(4), one O(5), and one O(7) atom. In the third B site, B(3) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form BO4 tetrahedra that share corners with two equivalent Ge(1)O4 tetrahedra. Ge(1) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent B(3)O4 tetrahedra. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cs(1), one B(3), and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(1), one B(3), and one Ge(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cs(1), one B(1), and one B(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent Cs(1), one B(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cs(1), one B(2), and one B(3) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Cs(1), one B(1), and one Ge(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(1), one B(2), and one Ge(1) atom.
CsB3GeO7 crystallizes in the orthorhombic Pna2_1 space group. Cs(1) is bonded in a 10-coordinate geometry to one O(1), one O(3), one O(5), one O(6), two equivalent O(2), two equivalent O(4), and two equivalent O(7) atoms. The Cs(1)-O(1) bond length is 3.38 Å. The Cs(1)-O(3) bond length is 3.20 Å. The Cs(1)-O(5) bond length is 3.04 Å. The Cs(1)-O(6) bond length is 3.34 Å. There is one shorter (3.14 Å) and one longer (3.47 Å) Cs(1)-O(2) bond length. There is one shorter (3.29 Å) and one longer (3.66 Å) Cs(1)-O(4) bond length. There is one shorter (3.38 Å) and one longer (3.49 Å) Cs(1)-O(7) bond length. There are three inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(3), one O(4), and one O(6) atom. The B(1)-O(3) bond length is 1.36 Å. The B(1)-O(4) bond length is 1.41 Å. The B(1)-O(6) bond length is 1.38 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(4), one O(5), and one O(7) atom. The B(2)-O(4) bond length is 1.40 Å. The B(2)-O(5) bond length is 1.36 Å. The B(2)-O(7) bond length is 1.38 Å. In the third B site, B(3) is bonded to one O(1), one O(2), one O(3), and one O(5) atom to form BO4 tetrahedra that share corners with two equivalent Ge(1)O4 tetrahedra. The B(3)-O(1) bond length is 1.48 Å. The B(3)-O(2) bond length is 1.48 Å. The B(3)-O(3) bond length is 1.50 Å. The B(3)-O(5) bond length is 1.48 Å. Ge(1) is bonded to one O(1), one O(2), one O(6), and one O(7) atom to form GeO4 tetrahedra that share corners with two equivalent B(3)O4 tetrahedra. The Ge(1)-O(1) bond length is 1.75 Å. The Ge(1)-O(2) bond length is 1.75 Å. The Ge(1)-O(6) bond length is 1.79 Å. The Ge(1)-O(7) bond length is 1.79 Å. There are seven inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cs(1), one B(3), and one Ge(1) atom. In the second O site, O(2) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(1), one B(3), and one Ge(1) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cs(1), one B(1), and one B(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to two equivalent Cs(1), one B(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Cs(1), one B(2), and one B(3) atom. In the sixth O site, O(6) is bonded in a distorted bent 150 degrees geometry to one Cs(1), one B(1), and one Ge(1) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to two equivalent Cs(1), one B(2), and one Ge(1) atom.