MnCu3C9H3O18Br crystallizes in the orthorhombic P2_12_12_1 space group. Mn(1) is bonded in an octahedral geometry to one O(13), one O(14), one O(15), one O(4), one O(5), and one O(6) atom. The Mn(1)-O(13) bond length is 2.09 Å. The Mn(1)-O(14) bond length is 2.13 Å. The Mn(1)-O(15) bond length is 2.23 Å. The Mn(1)-O(4) bond length is 2.17 Å. The Mn(1)-O(5) bond length is 2.18 Å. The Mn(1)-O(6) bond length is 2.13 Å. There are three inequivalent Cu sites. In the first Cu site, Cu(1) is bonded to one O(1), one O(2), one O(7), one O(8), and one Br(1) atom to form distorted edge-sharing CuBrO4 trigonal bipyramids. The Cu(1)-O(1) bond length is 1.96 Å. The Cu(1)-O(2) bond length is 1.96 Å. The Cu(1)-O(7) bond length is 1.96 Å. The Cu(1)-O(8) bond length is 1.98 Å. The Cu(1)-Br(1) bond length is 2.73 Å. In the second Cu site, Cu(2) is bonded in a rectangular see-saw-like geometry to one O(16), one O(18), one O(7), and one O(9) atom. The Cu(2)-O(16) bond length is 1.93 Å. The Cu(2)-O(18) bond length is 1.94 Å. The Cu(2)-O(7) bond length is 1.92 Å. The Cu(2)-O(9) bond length is 1.91 Å. In the third Cu site, Cu(3) is bonded to one O(17), one O(3), one O(8), one O(9), and one Br(1) atom to form distorted edge-sharing CuBrO4 square pyramids. The Cu(3)-O(17) bond length is 1.94 Å. The Cu(3)-O(3) bond length is 1.95 Å. The Cu(3)-O(8) bond length is 1.99 Å. The Cu(3)-O(9) bond length is 1.91 Å. The Cu(3)-Br(1) bond length is 2.72 Å. There are nine inequivalent C sites. In the first C site, C(1) is bonded in a distorted trigonal planar geometry to one C(4), one O(1), and one O(4) atom. The C(1)-C(4) bond length is 1.55 Å. The C(1)-O(1) bond length is 1.26 Å. The C(1)-O(4) bond length is 1.26 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(5), one O(2), and one O(5) atom. The C(2)-C(5) bond length is 1.55 Å. The C(2)-O(2) bond length is 1.27 Å. The C(2)-O(5) bond length is 1.25 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(6), one O(3), and one O(6) atom. The C(3)-C(6) bond length is 1.55 Å. The C(3)-O(3) bond length is 1.27 Å. The C(3)-O(6) bond length is 1.23 Å. In the fourth C site, C(4) is bonded in a distorted water-like geometry to one C(1), one C(7), one O(10), and one O(7) atom. The C(4)-C(7) bond length is 1.54 Å. The C(4)-O(10) bond length is 1.42 Å. The C(4)-O(7) bond length is 1.38 Å. In the fifth C site, C(5) is bonded in a distorted water-like geometry to one C(2), one C(8), one O(11), and one O(8) atom. The C(5)-C(8) bond length is 1.55 Å. The C(5)-O(11) bond length is 1.42 Å. The C(5)-O(8) bond length is 1.38 Å. In the sixth C site, C(6) is bonded in a distorted water-like geometry to one C(3), one C(9), one O(12), and one O(9) atom. The C(6)-C(9) bond length is 1.55 Å. The C(6)-O(12) bond length is 1.42 Å. The C(6)-O(9) bond length is 1.37 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(4), one O(13), and one O(16) atom. The C(7)-O(13) bond length is 1.24 Å. The C(7)-O(16) bond length is 1.25 Å. In the eighth C site, C(8) is bonded in a distorted trigonal planar geometry to one C(5), one O(14), and one O(17) atom. The C(8)-O(14) bond length is 1.25 Å. The C(8)-O(17) bond length is 1.24 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(6), one O(15), and one O(18) atom. The C(9)-O(15) bond length is 1.24 Å. The C(9)-O(18) bond length is 1.25 Å. There are three inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one O(10) atom. The H(1)-O(10) bond length is 0.82 Å. In the second H site, H(2) is bonded in a single-bond geometry to one O(11) atom. The H(2)-O(11) bond length is 0.82 Å. In the third H site, H(3) is bonded in a single-bond geometry to one O(12) atom. The H(3)-O(12) bond length is 0.82 Å. There are eighteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(1) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Cu(1) and one C(2) atom. In the third O site, O(3) is bonded in a bent 120 degrees geometry to one Cu(3) and one C(3) atom. In the fourth O site, O(4) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(1) atom. In the fifth O site, O(5) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(2) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(3) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar geometry to one Cu(1), one Cu(2), and one C(4) atom. In the eighth O site, O(8) is bonded in a trigonal non-coplanar geometry to one Cu(1), one Cu(3), and one C(5) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Cu(2), one Cu(3), and one C(6) atom. In the tenth O site, O(10) is bonded in a distorted water-like geometry to one C(4) and one H(1) atom. In the eleventh O site, O(11) is bonded in a single-bond geometry to one C(5) and one H(2) atom. In the twelfth O site, O(12) is bonded in a water-like geometry to one C(6) and one H(3) atom. In the thirteenth O site, O(13) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(7) atom. In the fourteenth O site, O(14) is bonded in a distorted bent 120 degrees geometry to one Mn(1) and one C(8) atom. In the fifteenth O site, O(15) is bonded in a bent 120 degrees geometry to one Mn(1) and one C(9) atom. In the sixteenth O site, O(16) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(7) atom. In the seventeenth O site, O(17) is bonded in a bent 120 degrees geometry to one Cu(3) and one C(8) atom. In the eighteenth O site, O(18) is bonded in a bent 120 degrees geometry to one Cu(2) and one C(9) atom. Br(1) is bonded in a 2-coordinate geometry to one Cu(1) and one Cu(3) atom. Linkers: 12 [O]C(=O)C([O])(O)C([O])=O. Metal clusters: 4 [Mn] ,12 [Cu]. The MOF has largest included sphere 10.22 A, density 0.84 g/cm3, surface area 2742.77 m2/g, accessible volume 0.95 cm3/g