Ni2C25NH18O10CH3 crystallizes in the monoclinic P2_1/c space group. The structure consists of four 02329_fluka molecules inside a Ni2C25NH18O10 framework. In the Ni2C25NH18O10 framework, there are three inequivalent Ni sites. In the first Ni site, Ni(1) is bonded to two equivalent O(2), two equivalent O(7), and two equivalent O(9) atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles are 65°. Both Ni(1)-O(2) bond lengths are 2.06 Å. Both Ni(1)-O(7) bond lengths are 2.06 Å. Both Ni(1)-O(9) bond lengths are 2.15 Å. In the second Ni site, Ni(2) is bonded to one O(1), one O(10), one O(3), one O(6), one O(8), and one O(9) atom to form corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles range from 65-68°. The Ni(2)-O(1) bond length is 2.05 Å. The Ni(2)-O(10) bond length is 2.15 Å. The Ni(2)-O(3) bond length is 2.02 Å. The Ni(2)-O(6) bond length is 2.01 Å. The Ni(2)-O(8) bond length is 2.04 Å. The Ni(2)-O(9) bond length is 2.06 Å. In the third Ni site, Ni(3) is bonded to two equivalent O(10), two equivalent O(4), and two equivalent O(5) atoms to form corner-sharing NiO6 octahedra. The corner-sharing octahedral tilt angles are 68°. Both Ni(3)-O(10) bond lengths are 2.08 Å. Both Ni(3)-O(4) bond lengths are 2.02 Å. Both Ni(3)-O(5) bond lengths are 2.04 Å. There are twenty-five inequivalent C sites. In the first C site, C(10) is bonded in a trigonal planar geometry to one C(11), one C(13), and one C(9) atom. The C(10)-C(11) bond length is 1.41 Å. The C(10)-C(13) bond length is 1.48 Å. The C(10)-C(9) bond length is 1.40 Å. In the second C site, C(11) is bonded in a trigonal planar geometry to one C(10), one C(12), and one C(22) atom. The C(11)-C(12) bond length is 1.40 Å. The C(11)-C(22) bond length is 1.51 Å. In the third C site, C(12) is bonded in a distorted single-bond geometry to one C(11), one C(7), and one H(6) atom. The C(12)-C(7) bond length is 1.40 Å. The C(12)-H(6) bond length is 1.09 Å. In the fourth C site, C(13) is bonded in a trigonal planar geometry to one C(10), one C(14), and one C(18) atom. The C(13)-C(14) bond length is 1.41 Å. The C(13)-C(18) bond length is 1.41 Å. In the fifth C site, C(14) is bonded in a distorted single-bond geometry to one C(13) and one H(7) atom. The C(14)-H(7) bond length is 1.09 Å. In the sixth C site, C(15) is bonded in a distorted single-bond geometry to one C(16) and one H(8) atom. The C(15)-C(16) bond length is 1.40 Å. The C(15)-H(8) bond length is 1.09 Å. In the seventh C site, C(16) is bonded in a trigonal planar geometry to one C(15), one C(17), and one C(21) atom. The C(16)-C(17) bond length is 1.40 Å. The C(16)-C(21) bond length is 1.50 Å. In the eighth C site, C(17) is bonded in a distorted single-bond geometry to one C(16), one C(18), and one H(9) atom. The C(17)-C(18) bond length is 1.39 Å. The C(17)-H(9) bond length is 1.09 Å. In the ninth C site, C(18) is bonded in a distorted trigonal planar geometry to one C(13), one C(17), and one H(10) atom. The C(18)-H(10) bond length is 1.09 Å. In the tenth C site, C(19) is bonded in a distorted bent 120 degrees geometry to one C(1), one O(1), and one O(2) atom. The C(19)-C(1) bond length is 1.50 Å. The C(19)-O(1) bond length is 1.28 Å. The C(19)-O(2) bond length is 1.26 Å. In the eleventh C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(8), one O(3), and one O(4) atom. The C(20)-C(8) bond length is 1.51 Å. The C(20)-O(3) bond length is 1.27 Å. The C(20)-O(4) bond length is 1.27 Å. In the twelfth C site, C(21) is bonded in a distorted bent 120 degrees geometry to one C(16), one O(5), and one O(6) atom. The C(21)-O(5) bond length is 1.27 Å. The C(21)-O(6) bond length is 1.27 Å. In the thirteenth C site, C(22) is bonded in a distorted bent 120 degrees geometry to one C(11), one O(7), and one O(8) atom. The C(22)-O(7) bond length is 1.27 Å. The C(22)-O(8) bond length is 1.28 Å. In the fourteenth C site, C(24) is bonded in a distorted bent 120 degrees geometry to one N(1) and one O(9) atom. The C(24)-N(1) bond length is 1.33 Å. The C(24)-O(9) bond length is 1.29 Å. In the fifteenth C site, C(25) is bonded to one N(1), one H(14), one H(15), and one H(16) atom to form corner-sharing CH3N tetrahedra. The C(25)-N(1) bond length is 1.46 Å. The C(25)-H(14) bond length is 1.09 Å. The C(25)-H(15) bond length is 1.10 Å. The C(25)-H(16) bond length is 1.10 Å. In the sixteenth C site, C(26) is bonded to one N(1), one H(17), one H(18), and one H(19) atom to form corner-sharing CH3N tetrahedra. The C(26)-N(1) bond length is 1.47 Å. The C(26)-H(17) bond length is 1.10 Å. The C(26)-H(18) bond length is 1.09 Å. The C(26)-H(19) bond length is 1.10 Å. In the seventeenth C site, C(1) is bonded in a trigonal planar geometry to one C(19), one C(2), and one C(6) atom. The C(1)-C(2) bond length is 1.40 Å. The C(1)-C(6) bond length is 1.40 Å. In the eighteenth C site, C(2) is bonded in a distorted single-bond geometry to one C(1) and one H(1) atom. The C(2)-H(1) bond length is 1.09 Å. In the nineteenth C site, C(3) is bonded in a distorted single-bond geometry to one C(4) and one H(2) atom. The C(3)-C(4) bond length is 1.41 Å. The C(3)-H(2) bond length is 1.09 Å. In the twentieth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(7) atom. The C(4)-C(5) bond length is 1.41 Å. The C(4)-C(7) bond length is 1.48 Å. In the twenty-first C site, C(5) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(3) atom. The C(5)-C(6) bond length is 1.40 Å. The C(5)-H(3) bond length is 1.09 Å. In the twenty-second C site, C(6) is bonded in a distorted trigonal planar geometry to one C(1), one C(5), and one H(4) atom. The C(6)-H(4) bond length is 1.09 Å. In the twenty-third C site, C(7) is bonded in a trigonal planar geometry to one C(12), one C(4), and one C(8) atom. The C(7)-C(8) bond length is 1.41 Å. In the twenty-fourth C site, C(8) is bonded in a trigonal planar geometry to one C(20), one C(7), and one C(9) atom. The C(8)-C(9) bond length is 1.39 Å. In the twenty-fifth C site, C(9) is bonded in a distorted single-bond geometry to one C(10), one C(8), and one H(5) atom. The C(9)-H(5) bond length is 1.09 Å. N(1) is bonded in a trigonal planar geometry to one C(24), one C(25), and one C(26) atom. There are eighteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(2) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(3) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(5) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(6) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(9) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(12) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(14) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(15) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(17) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(18) atom. In the eleventh H site, H(14) is bonded in a single-bond geometry to one C(25) atom. In the twelfth H site, H(15) is bonded in a single-bond geometry to one C(25) atom. In the thirteenth H site, H(16) is bonded in a single-bond geometry to one C(25) atom. In the fourteenth H site, H(17) is bonded in a single-bond geometry to one C(26) atom. In the fifteenth H site, H(18) is bonded in a single-bond geometry to one C(26) atom. In the sixteenth H site, H(19) is bonded in a single-bond geometry to one C(26) atom. In the seventeenth H site, H(20) is bonded in a single-bond geometry to one O(10) atom. The H(20)-O(10) bond length is 0.98 Å. In the eighteenth H site, H(21) is bonded in a single-bond geometry to one O(10) atom. The H(21)-O(10) bond length is 0.99 Å. There are ten inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ni(2) and one C(19) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one Ni(1) and one C(19) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Ni(2) and one C(20) atom. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one Ni(3) and one C(20) atom. In the fifth O site, O(5) is bonded in a distorted bent 120 degrees geometry to one Ni(3) and one C(21) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Ni(2) and one C(21) atom. In the seventh O site, O(7) is bonded in a distorted bent 120 degrees geometry to one Ni(1) and one C(22) atom. In the eighth O site, O(8) is bonded in a distorted bent 120 degrees geometry to one Ni(2) and one C(22) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one Ni(1), one Ni(2), and one C(24) atom. In the tenth O site, O(10) is bonded in a distorted water-like geometry to one Ni(2), one Ni(3), one H(20), and one H(21) atom. Linkers: 4 [O]C(=O)c1ccc(-c2cc(C([O])=O)c(-c3ccc(C([O])=O)cc3)cc2C([O])=O)cc1. Metal clusters: 8 [Ni]. RCSR code: scu. The MOF has largest included sphere 4.33 A, density 1.50 g/cm3, surface area 3662.91 m2/g, accessible volume 0.23 cm3/g