CdC19H13(N3O2)2CNH2 crystallizes in the monoclinic P2_1/c space group. The structure consists of four methylamine molecules inside a CdC19H13(N3O2)2 framework. In the CdC19H13(N3O2)2 framework, Cd(1) is bonded to one N(1), one N(7), one O(2), one O(3), one O(4), and two equivalent O(1) atoms to form distorted edge-sharing CdN2O5 pentagonal bipyramids. The Cd(1)-N(1) bond length is 2.37 Å. The Cd(1)-N(7) bond length is 2.34 Å. The Cd(1)-O(2) bond length is 2.34 Å. The Cd(1)-O(3) bond length is 2.50 Å. The Cd(1)-O(4) bond length is 2.27 Å. There is one shorter (2.45 Å) and one longer (2.71 Å) Cd(1)-O(1) bond length. There are nineteen inequivalent C sites. In the first C site, C(17) is bonded in a distorted single-bond geometry to one C(16), one C(19), and one H(12) atom. The C(17)-C(16) bond length is 1.40 Å. The C(17)-C(19) bond length is 1.39 Å. The C(17)-H(12) bond length is 1.09 Å. In the second C site, C(18) is bonded in a distorted trigonal planar geometry to one C(16), one C(20), and one H(13) atom. The C(18)-C(16) bond length is 1.41 Å. The C(18)-C(20) bond length is 1.39 Å. The C(18)-H(13) bond length is 1.09 Å. In the third C site, C(19) is bonded in a distorted trigonal planar geometry to one C(17), one N(7), and one H(14) atom. The C(19)-N(7) bond length is 1.34 Å. The C(19)-H(14) bond length is 1.09 Å. In the fourth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one C(18), one N(7), and one H(15) atom. The C(20)-N(7) bond length is 1.35 Å. The C(20)-H(15) bond length is 1.09 Å. In the fifth C site, C(1) is bonded in a bent 120 degrees geometry to one C(4), one O(2), and one O(3) atom. The C(1)-C(4) bond length is 1.50 Å. The C(1)-O(2) bond length is 1.28 Å. The C(1)-O(3) bond length is 1.27 Å. In the sixth C site, C(2) is bonded in a trigonal planar geometry to one C(3), one C(6), and one C(7) atom. The C(2)-C(3) bond length is 1.50 Å. The C(2)-C(6) bond length is 1.40 Å. The C(2)-C(7) bond length is 1.40 Å. In the seventh C site, C(3) is bonded in a bent 120 degrees geometry to one C(2), one O(1), and one O(4) atom. The C(3)-O(1) bond length is 1.27 Å. The C(3)-O(4) bond length is 1.29 Å. In the eighth C site, C(4) is bonded in a trigonal planar geometry to one C(1), one C(10), and one C(6) atom. The C(4)-C(10) bond length is 1.39 Å. The C(4)-C(6) bond length is 1.40 Å. In the ninth C site, C(6) is bonded in a distorted single-bond geometry to one C(2), one C(4), and one H(1) atom. The C(6)-H(1) bond length is 1.08 Å. In the tenth C site, C(7) is bonded in a single-bond geometry to one C(2) and one H(2) atom. The C(7)-H(2) bond length is 1.09 Å. In the eleventh C site, C(8) is bonded in a trigonal planar geometry to one C(11), one C(12), and one C(13) atom. The C(8)-C(11) bond length is 1.41 Å. The C(8)-C(12) bond length is 1.46 Å. The C(8)-C(13) bond length is 1.40 Å. In the twelfth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(5) atom. The C(9)-N(1) bond length is 1.34 Å. The C(9)-H(5) bond length is 1.09 Å. In the thirteenth C site, C(10) is bonded in a distorted single-bond geometry to one C(4) and one H(6) atom. The C(10)-H(6) bond length is 1.09 Å. In the fourteenth C site, C(11) is bonded in a distorted trigonal planar geometry to one C(15), one C(8), and one H(7) atom. The C(11)-C(15) bond length is 1.39 Å. The C(11)-H(7) bond length is 1.09 Å. In the fifteenth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(8), one N(2), and one N(5) atom. The C(12)-N(2) bond length is 1.37 Å. The C(12)-N(5) bond length is 1.34 Å. In the sixteenth C site, C(13) is bonded in a distorted single-bond geometry to one C(8) and one H(8) atom. The C(13)-H(8) bond length is 1.09 Å. In the seventeenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(16), one N(2), and one N(4) atom. The C(14)-C(16) bond length is 1.46 Å. The C(14)-N(2) bond length is 1.37 Å. The C(14)-N(4) bond length is 1.34 Å. In the eighteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(11), one N(1), and one H(11) atom. The C(15)-N(1) bond length is 1.35 Å. The C(15)-H(11) bond length is 1.09 Å. In the nineteenth C site, C(16) is bonded in a trigonal planar geometry to one C(14), one C(17), and one C(18) atom. There are six inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Cd(1), one C(15), and one C(9) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one C(12), one C(14), and one N(3) atom. The N(2)-N(3) bond length is 1.41 Å. In the third N site, N(3) is bonded in a distorted water-like geometry to one N(2), one H(3), and one H(4) atom. The N(3)-H(3) bond length is 1.02 Å. The N(3)-H(4) bond length is 1.02 Å. In the fourth N site, N(4) is bonded in a single-bond geometry to one C(14) atom. In the fifth N site, N(5) is bonded in a single-bond geometry to one C(12) atom. In the sixth N site, N(7) is bonded in a trigonal planar geometry to one Cd(1), one C(19), and one C(20) atom. There are thirteen inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(6) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(7) atom. In the third H site, H(3) is bonded in a single-bond geometry to one N(3) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one N(3) 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(10) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(11) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(13) atom. In the ninth H site, H(11) is bonded in a single-bond geometry to one C(15) atom. In the tenth H site, H(12) is bonded in a single-bond geometry to one C(17) atom. In the eleventh H site, H(13) is bonded in a single-bond geometry to one C(18) atom. In the twelfth H site, H(14) is bonded in a single-bond geometry to one C(19) atom. In the thirteenth H site, H(15) is bonded in a single-bond geometry to one C(20) atom. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted single-bond geometry to two equivalent Cd(1) and one C(3) atom. In the second O site, O(2) is bonded in an L-shaped geometry to one Cd(1) and one C(1) atom. In the third O site, O(3) is bonded in an L-shaped geometry to one Cd(1) and one C(1) atom. In the fourth O site, O(4) is bonded in a water-like geometry to one Cd(1) and one C(3) atom. Linkers: 4 Nc1cc(C([O])=O)cc(C([O])=O)c1 ,4 Nn1c(-c2ccncc2)nnc1-c1ccncc1. Metal clusters: 2 [C]1O[Cd]2(O1)O[C]O[Cd]1(O[C]O1)O[C]O2. RCSR code: sql. The MOF has largest included sphere 6.85 A, density 0.95 g/cm3, surface area 4358.25 m2/g, accessible volume 0.67 cm3/g