RbLi2Ga2(BO3)3 crystallizes in the monoclinic P2/c space group. Rb(1) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), two equivalent O(5), and four equivalent O(3) atoms. Li(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra and corners with three equivalent Ga(1)O4 tetrahedra. Ga(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GaO4 tetrahedra that share corners with three equivalent Li(1)O4 tetrahedra. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(2) atoms. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Li(1), one Ga(1), and one B(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Rb(1), one Li(1), one Ga(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one Ga(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Rb(1), one Li(1), one Ga(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1), two equivalent Li(1), and one B(1) atom.
RbLi2Ga2(BO3)3 crystallizes in the monoclinic P2/c space group. Rb(1) is bonded in a 12-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent O(4), two equivalent O(5), and four equivalent O(3) atoms. Both Rb(1)-O(1) bond lengths are 3.03 Å. Both Rb(1)-O(2) bond lengths are 3.46 Å. Both Rb(1)-O(4) bond lengths are 3.54 Å. Both Rb(1)-O(5) bond lengths are 3.38 Å. There are two shorter (3.13 Å) and two longer (3.15 Å) Rb(1)-O(3) bond lengths. Li(1) is bonded to one O(1), one O(2), one O(4), and one O(5) atom to form LiO4 tetrahedra that share  a cornercorner with one Li(1)O4 tetrahedra and corners with three equivalent Ga(1)O4 tetrahedra. The Li(1)-O(1) bond length is 2.04 Å. The Li(1)-O(2) bond length is 1.95 Å. The Li(1)-O(4) bond length is 1.98 Å. The Li(1)-O(5) bond length is 1.89 Å. Ga(1) is bonded to one O(1), one O(2), one O(3), and one O(4) atom to form GaO4 tetrahedra that share corners with three equivalent Li(1)O4 tetrahedra. The Ga(1)-O(1) bond length is 1.88 Å. The Ga(1)-O(2) bond length is 1.85 Å. The Ga(1)-O(3) bond length is 1.87 Å. The Ga(1)-O(4) bond length is 1.86 Å. There are two inequivalent B sites. In the first B site, B(1) is bonded in a trigonal planar geometry to one O(5) and two equivalent O(2) atoms. The B(1)-O(5) bond length is 1.34 Å. Both B(1)-O(2) bond lengths are 1.41 Å. In the second B site, B(2) is bonded in a trigonal planar geometry to one O(1), one O(3), and one O(4) atom. The B(2)-O(1) bond length is 1.40 Å. The B(2)-O(3) bond length is 1.38 Å. The B(2)-O(4) bond length is 1.39 Å. There are five inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Rb(1), one Li(1), one Ga(1), and one B(2) atom. In the second O site, O(2) is bonded in a trigonal planar geometry to one Rb(1), one Li(1), one Ga(1), and one B(1) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to two equivalent Rb(1), one Ga(1), and one B(2) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Rb(1), one Li(1), one Ga(1), and one B(2) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to two equivalent Rb(1), two equivalent Li(1), and one B(1) atom.