Co2Ga3(PO4)5 crystallizes in the triclinic P-1 space group. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded to one O(13), one O(14), one O(15), and one O(16) atom to form CoO4 tetrahedra that share  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and corners with two equivalent P(3)O4 tetrahedra. The Co(1)-O(13) bond length is 1.86 Å. The Co(1)-O(14) bond length is 1.84 Å. The Co(1)-O(15) bond length is 1.86 Å. The Co(1)-O(16) bond length is 1.87 Å. In the second Co site, Co(2) is bonded to one O(17), one O(18), one O(19), and one O(20) atom to form CoO4 tetrahedra that share  a cornercorner with one P(3)O4 tetrahedra,  a cornercorner with one P(5)O4 tetrahedra, and corners with two equivalent P(4)O4 tetrahedra. The Co(2)-O(17) bond length is 1.82 Å. The Co(2)-O(18) bond length is 1.84 Å. The Co(2)-O(19) bond length is 1.86 Å. The Co(2)-O(20) bond length is 1.83 Å. There are three inequivalent Ga sites. In the first Ga site, 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  a cornercorner with one P(2)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(1)O4 tetrahedra. The Ga(1)-O(1) bond length is 1.84 Å. The Ga(1)-O(2) bond length is 1.84 Å. The Ga(1)-O(3) bond length is 1.85 Å. The Ga(1)-O(4) bond length is 1.84 Å. In the second Ga site, Ga(2) is bonded to one O(5), one O(6), one O(7), and one O(8) atom to form GaO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(3)O4 tetrahedra, and corners with two equivalent P(5)O4 tetrahedra. The Ga(2)-O(5) bond length is 1.85 Å. The Ga(2)-O(6) bond length is 1.84 Å. The Ga(2)-O(7) bond length is 1.82 Å. The Ga(2)-O(8) bond length is 1.87 Å. In the third Ga site, Ga(3) is bonded to one O(10), one O(11), one O(12), and one O(9) atom to form GaO4 tetrahedra that share  a cornercorner with one P(1)O4 tetrahedra,  a cornercorner with one P(4)O4 tetrahedra, and corners with two equivalent P(2)O4 tetrahedra. The Ga(3)-O(10) bond length is 1.87 Å. The Ga(3)-O(11) bond length is 1.81 Å. The Ga(3)-O(12) bond length is 1.86 Å. The Ga(3)-O(9) bond length is 1.87 Å. There are five inequivalent P sites. In the first P site, P(1) is bonded to one O(3), one O(4), one O(7), and one O(9) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(2)O4 tetrahedra,  a cornercorner with one Ga(3)O4 tetrahedra, and corners with two equivalent Ga(1)O4 tetrahedra. The P(1)-O(3) bond length is 1.49 Å. The P(1)-O(4) bond length is 1.53 Å. The P(1)-O(7) bond length is 1.53 Å. The P(1)-O(9) bond length is 1.54 Å. In the second P site, P(2) is bonded to one O(10), one O(11), one O(13), and one O(2) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Ga(1)O4 tetrahedra, and corners with two equivalent Ga(3)O4 tetrahedra. The P(2)-O(10) bond length is 1.50 Å. The P(2)-O(11) bond length is 1.50 Å. The P(2)-O(13) bond length is 1.54 Å. The P(2)-O(2) bond length is 1.51 Å. In the third P site, P(3) is bonded to one O(15), one O(16), one O(20), and one O(8) atom to form PO4 tetrahedra that share  a cornercorner with one Co(2)O4 tetrahedra,  a cornercorner with one Ga(2)O4 tetrahedra, and corners with two equivalent Co(1)O4 tetrahedra. The P(3)-O(15) bond length is 1.51 Å. The P(3)-O(16) bond length is 1.52 Å. The P(3)-O(20) bond length is 1.51 Å. The P(3)-O(8) bond length is 1.52 Å. In the fourth P site, P(4) is bonded to one O(1), one O(12), one O(17), and one O(19) atom to form PO4 tetrahedra that share  a cornercorner with one Ga(1)O4 tetrahedra,  a cornercorner with one Ga(3)O4 tetrahedra, and corners with two equivalent Co(2)O4 tetrahedra. The P(4)-O(1) bond length is 1.51 Å. The P(4)-O(12) bond length is 1.51 Å. The P(4)-O(17) bond length is 1.52 Å. The P(4)-O(19) bond length is 1.51 Å. In the fifth P site, P(5) is bonded to one O(14), one O(18), one O(5), and one O(6) atom to form PO4 tetrahedra that share  a cornercorner with one Co(1)O4 tetrahedra,  a cornercorner with one Co(2)O4 tetrahedra, and corners with two equivalent Ga(2)O4 tetrahedra. The P(5)-O(14) bond length is 1.50 Å. The P(5)-O(18) bond length is 1.52 Å. The P(5)-O(5) bond length is 1.53 Å. The P(5)-O(6) bond length is 1.52 Å. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a bent 150 degrees geometry to one Ga(1) and one P(4) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Ga(1) and one P(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Ga(1) and one P(1) atom. In the fourth O site, O(4) is bonded in a bent 150 degrees geometry to one Ga(1) and one P(1) atom. In the fifth O site, O(5) is bonded in a bent 150 degrees geometry to one Ga(2) and one P(5) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Ga(2) and one P(5) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one Ga(2) and one P(1) atom. In the eighth O site, O(8) is bonded in a bent 120 degrees geometry to one Ga(2) and one P(3) atom. In the ninth O site, O(9) is bonded in a bent 120 degrees geometry to one Ga(3) and one P(1) atom. In the tenth O site, O(10) is bonded in a bent 120 degrees geometry to one Ga(3) and one P(2) atom. In the eleventh O site, O(11) is bonded in a linear geometry to one Ga(3) and one P(2) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one Ga(3) and one P(4) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Co(1) and one P(2) atom. In the fourteenth O site, O(14) is bonded in a bent 150 degrees geometry to one Co(1) and one P(5) atom. In the fifteenth O site, O(15) is bonded in a bent 150 degrees geometry to one Co(1) and one P(3) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Co(1) and one P(3) atom. In the seventeenth O site, O(17) is bonded in a distorted bent 150 degrees geometry to one Co(2) and one P(4) atom. In the eighteenth O site, O(18) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one P(5) atom. In the nineteenth O site, O(19) is bonded in a distorted bent 150 degrees geometry to one Co(2) and one P(4) atom. In the twentieth O site, O(20) is bonded in a distorted bent 120 degrees geometry to one Co(2) and one P(3) atom. Linkers: 10 [O]P([O])([O])=O. Metal clusters: 6 [Ga] ,4 [Co]. The MOF has largest included sphere 6.17 A, density 2.02 g/cm3, surface area 2150.63 m2/g, accessible volume 0.24 cm3/g