RbGa2P5O16 crystallizes in the monoclinic Pc space group. Rb(1) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(14), one O(15), one O(4), one O(6), and one O(9) atom. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(10), one O(11), one O(12), one O(13), one O(15), and one O(7) atom to form GaO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. In the second Ga site, Ga(2) is bonded to one O(14), one O(3), one O(4), one O(5), one O(6), and one O(9) atom to form GaO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(15), one O(2), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(2)O6 octahedra, corners with two equivalent Ga(1)O6 octahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-49°. In the second P site, P(2) is bonded to one O(10), one O(14), one O(16), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-56°. In the third P site, P(3) is bonded to one O(12), one O(16), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra, corners with two equivalent Ga(2)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-46°. In the fourth P site, P(4) is bonded to one O(1), one O(13), one O(3), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 9-60°. In the fifth P site, P(5) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-52°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(4) and one P(5) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one P(5) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Ga(2) and one P(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Ga(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Ga(2) and one P(5) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Rb(1), one Ga(2), and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Ga(1) and one P(5) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one P(2) and one P(4) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Rb(1), one Ga(2), and one P(3) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Ga(1) and one P(2) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ga(1), and one P(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Ga(1) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Rb(1), one Ga(1), and one P(4) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Ga(2), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to one Rb(1), one Ga(1), and one P(1) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom.
RbGa2P5O16 crystallizes in the monoclinic Pc space group. Rb(1) is bonded in a 7-coordinate geometry to one O(11), one O(13), one O(14), one O(15), one O(4), one O(6), and one O(9) atom. The Rb(1)-O(11) bond length is 3.04 Å. The Rb(1)-O(13) bond length is 3.06 Å. The Rb(1)-O(14) bond length is 3.10 Å. The Rb(1)-O(15) bond length is 3.17 Å. The Rb(1)-O(4) bond length is 3.16 Å. The Rb(1)-O(6) bond length is 3.21 Å. The Rb(1)-O(9) bond length is 3.37 Å. There are two inequivalent Ga sites. In the first Ga site, Ga(1) is bonded to one O(10), one O(11), one O(12), one O(13), one O(15), and one O(7) atom to form GaO6 octahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Ga(1)-O(10) bond length is 1.96 Å. The Ga(1)-O(11) bond length is 1.90 Å. The Ga(1)-O(12) bond length is 1.92 Å. The Ga(1)-O(13) bond length is 2.07 Å. The Ga(1)-O(15) bond length is 1.92 Å. The Ga(1)-O(7) bond length is 2.03 Å. In the second Ga site, Ga(2) is bonded to one O(14), one O(3), one O(4), one O(5), one O(6), and one O(9) atom to form GaO6 octahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Ga(2)-O(14) bond length is 1.96 Å. The Ga(2)-O(3) bond length is 2.06 Å. The Ga(2)-O(4) bond length is 1.90 Å. The Ga(2)-O(5) bond length is 2.00 Å. The Ga(2)-O(6) bond length is 1.94 Å. The Ga(2)-O(9) bond length is 1.96 Å. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(11), one O(15), one O(2), and one O(4) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(2)O6 octahedra, corners with two equivalent Ga(1)O6 octahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 36-49°. The P(1)-O(11) bond length is 1.50 Å. The P(1)-O(15) bond length is 1.50 Å. The P(1)-O(2) bond length is 1.62 Å. The P(1)-O(4) bond length is 1.51 Å. In the second P site, P(2) is bonded to one O(10), one O(14), one O(16), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one P(3)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 51-56°. The P(2)-O(10) bond length is 1.49 Å. The P(2)-O(14) bond length is 1.50 Å. The P(2)-O(16) bond length is 1.56 Å. The P(2)-O(8) bond length is 1.60 Å. In the third P site, P(3) is bonded to one O(12), one O(16), one O(6), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra, corners with two equivalent Ga(2)O6 octahedra, and  a cornercorner with one P(2)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 31-46°. The P(3)-O(12) bond length is 1.50 Å. The P(3)-O(16) bond length is 1.63 Å. The P(3)-O(6) bond length is 1.51 Å. The P(3)-O(9) bond length is 1.52 Å. In the fourth P site, P(4) is bonded to one O(1), one O(13), one O(3), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one P(2)O4 tetrahedra, and  a cornercorner with one P(5)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 9-60°. The P(4)-O(1) bond length is 1.60 Å. The P(4)-O(13) bond length is 1.50 Å. The P(4)-O(3) bond length is 1.47 Å. The P(4)-O(8) bond length is 1.60 Å. In the fifth P site, P(5) is bonded to one O(1), one O(2), one O(5), and one O(7) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O6 octahedra,  a cornercorner with one Ga(2)O6 octahedra,  a cornercorner with one P(1)O4 tetrahedra, and  a cornercorner with one P(4)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 44-52°. The P(5)-O(1) bond length is 1.61 Å. The P(5)-O(2) bond length is 1.58 Å. The P(5)-O(5) bond length is 1.49 Å. The P(5)-O(7) bond length is 1.49 Å. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one P(4) and one P(5) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one P(1) and one P(5) atom. In the third O site, O(3) is bonded in a distorted linear geometry to one Ga(2) and one P(4) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Ga(2), and one P(1) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Ga(2) and one P(5) atom. In the sixth O site, O(6) is bonded in a 2-coordinate geometry to one Rb(1), one Ga(2), and one P(3) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Ga(1) and one P(5) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one P(2) and one P(4) atom. In the ninth O site, O(9) is bonded in a 2-coordinate geometry to one Rb(1), one Ga(2), and one P(3) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Ga(1) and one P(2) atom. In the eleventh O site, O(11) is bonded in a distorted bent 150 degrees geometry to one Rb(1), one Ga(1), and one P(1) atom. In the twelfth O site, O(12) is bonded in a bent 150 degrees geometry to one Ga(1) and one P(3) atom. In the thirteenth O site, O(13) is bonded in a 3-coordinate geometry to one Rb(1), one Ga(1), and one P(4) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Rb(1), one Ga(2), and one P(2) atom. In the fifteenth O site, O(15) is bonded in a 2-coordinate geometry to one Rb(1), one Ga(1), and one P(1) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one P(2) and one P(3) atom.