(SmH13(C3N2)4)3C3H4N2 crystallizes in the monoclinic Cc space group. The structure consists of four imidazole molecules inside a SmH13(C3N2)4 framework. In the SmH13(C3N2)4 framework, there are three inequivalent Sm sites. In the first Sm site, Sm(1) is bonded in a distorted pentagonal bipyramidal geometry to one N(1), one N(11), one N(20), one N(3), one N(5), one N(7), and one N(9) atom. The Sm(1)-N(1) bond length is 2.50 Å. The Sm(1)-N(11) bond length is 2.61 Å. The Sm(1)-N(20) bond length is 2.52 Å. The Sm(1)-N(3) bond length is 2.52 Å. The Sm(1)-N(5) bond length is 2.50 Å. The Sm(1)-N(7) bond length is 2.51 Å. The Sm(1)-N(9) bond length is 2.53 Å. In the second Sm site, Sm(2) is bonded in a pentagonal bipyramidal geometry to one N(13), one N(15), one N(17), one N(2), one N(22), one N(4), and one N(6) atom. The Sm(2)-N(13) bond length is 2.49 Å. The Sm(2)-N(15) bond length is 2.52 Å. The Sm(2)-N(17) bond length is 2.63 Å. The Sm(2)-N(2) bond length is 2.49 Å. The Sm(2)-N(22) bond length is 2.57 Å. The Sm(2)-N(4) bond length is 2.52 Å. The Sm(2)-N(6) bond length is 2.48 Å. In the third Sm site, Sm(3) is bonded in an octahedral geometry to one N(10), one N(14), one N(16), one N(19), one N(21), and one N(8) atom. The Sm(3)-N(10) bond length is 2.49 Å. The Sm(3)-N(14) bond length is 2.46 Å. The Sm(3)-N(16) bond length is 2.47 Å. The Sm(3)-N(19) bond length is 2.45 Å. The Sm(3)-N(21) bond length is 2.46 Å. The Sm(3)-N(8) bond length is 2.48 Å. There are thirty-six inequivalent C sites. In the first C site, C(1) is bonded in a trigonal planar geometry to one N(1), one N(2), and one H(3) atom. The C(1)-N(1) bond length is 1.35 Å. The C(1)-N(2) bond length is 1.35 Å. The C(1)-H(3) bond length is 1.08 Å. In the second C site, C(2) is bonded in a distorted bent 120 degrees geometry to one C(3), one N(1), and one H(4) atom. The C(2)-C(3) bond length is 1.38 Å. The C(2)-N(1) bond length is 1.38 Å. The C(2)-H(4) bond length is 1.09 Å. In the third C site, C(3) is bonded in a distorted bent 120 degrees geometry to one C(2), one N(2), and one H(5) atom. The C(3)-N(2) bond length is 1.39 Å. The C(3)-H(5) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one N(3), one N(4), and one H(6) atom. The C(4)-N(3) bond length is 1.35 Å. The C(4)-N(4) bond length is 1.35 Å. The C(4)-H(6) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted bent 120 degrees geometry to one C(6), one N(3), and one H(7) atom. The C(5)-C(6) bond length is 1.38 Å. The C(5)-N(3) bond length is 1.39 Å. The C(5)-H(7) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted bent 120 degrees geometry to one C(5), one N(4), and one H(8) atom. The C(6)-N(4) bond length is 1.38 Å. The C(6)-H(8) bond length is 1.08 Å. In the seventh C site, C(7) is bonded in a trigonal planar geometry to one N(5), one N(6), and one H(9) atom. The C(7)-N(5) bond length is 1.35 Å. The C(7)-N(6) bond length is 1.35 Å. The C(7)-H(9) bond length is 1.08 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one C(9), one N(5), and one H(10) atom. The C(8)-C(9) bond length is 1.38 Å. The C(8)-N(5) bond length is 1.39 Å. The C(8)-H(10) bond length is 1.08 Å. In the ninth C site, C(9) is bonded in a distorted bent 120 degrees geometry to one C(8), one N(6), and one H(11) atom. The C(9)-N(6) bond length is 1.39 Å. The C(9)-H(11) bond length is 1.09 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one N(7), one N(8), and one H(12) atom. The C(10)-N(7) bond length is 1.35 Å. The C(10)-N(8) bond length is 1.35 Å. The C(10)-H(12) bond length is 1.08 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(12), one N(7), and one H(13) atom. The C(11)-C(12) bond length is 1.38 Å. The C(11)-N(7) bond length is 1.38 Å. The C(11)-H(13) bond length is 1.08 Å. In the twelfth C site, C(12) is bonded in a distorted bent 120 degrees geometry to one C(11), one N(8), and one H(14) atom. The C(12)-N(8) bond length is 1.39 Å. The C(12)-H(14) bond length is 1.09 Å. In the thirteenth C site, C(13) is bonded in a trigonal planar geometry to one N(10), one N(9), and one H(15) atom. The C(13)-N(10) bond length is 1.36 Å. The C(13)-N(9) bond length is 1.35 Å. The C(13)-H(15) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a distorted bent 120 degrees geometry to one C(15), one N(9), and one H(16) atom. The C(14)-C(15) bond length is 1.38 Å. The C(14)-N(9) bond length is 1.39 Å. The C(14)-H(16) bond length is 1.08 Å. In the fifteenth C site, C(15) is bonded in a distorted bent 120 degrees geometry to one C(14), one N(10), and one H(17) atom. The C(15)-N(10) bond length is 1.39 Å. The C(15)-H(17) bond length is 1.09 Å. In the sixteenth C site, C(16) is bonded in a trigonal planar geometry to one N(11), one N(12), and one H(18) atom. The C(16)-N(11) bond length is 1.34 Å. The C(16)-N(12) bond length is 1.36 Å. The C(16)-H(18) bond length is 1.09 Å. In the seventeenth C site, C(17) is bonded in a distorted bent 120 degrees geometry to one C(18), one N(11), and one H(19) atom. The C(17)-C(18) bond length is 1.37 Å. The C(17)-N(11) bond length is 1.39 Å. The C(17)-H(19) bond length is 1.08 Å. In the eighteenth C site, C(18) is bonded in a distorted bent 120 degrees geometry to one C(17), one N(12), and one H(20) atom. The C(18)-N(12) bond length is 1.38 Å. The C(18)-H(20) bond length is 1.08 Å. In the nineteenth C site, C(19) is bonded in a trigonal planar geometry to one N(13), one N(14), and one H(21) atom. The C(19)-N(13) bond length is 1.34 Å. The C(19)-N(14) bond length is 1.36 Å. The C(19)-H(21) bond length is 1.09 Å. In the twentieth C site, C(20) is bonded in a distorted bent 120 degrees geometry to one N(13) and one H(22) atom. The C(20)-N(13) bond length is 1.38 Å. The C(20)-H(22) bond length is 1.09 Å. In the twenty-first C site, C(21) is bonded in a distorted bent 120 degrees geometry to one N(14) and one H(23) atom. The C(21)-N(14) bond length is 1.38 Å. The C(21)-H(23) bond length is 1.09 Å. In the twenty-second C site, C(22) is bonded in a trigonal planar geometry to one N(15), one N(16), and one H(24) atom. The C(22)-N(15) bond length is 1.35 Å. The C(22)-N(16) bond length is 1.35 Å. The C(22)-H(24) bond length is 1.09 Å. In the twenty-third C site, C(23) is bonded in a distorted bent 120 degrees geometry to one N(15) and one H(25) atom. The C(23)-N(15) bond length is 1.39 Å. The C(23)-H(25) bond length is 1.09 Å. In the twenty-fourth C site, C(24) is bonded in a distorted bent 120 degrees geometry to one N(16) and one H(26) atom. The C(24)-N(16) bond length is 1.39 Å. The C(24)-H(26) bond length is 1.08 Å. In the twenty-fifth C site, C(25) is bonded in a trigonal planar geometry to one N(17), one N(18), and one H(27) atom. The C(25)-N(17) bond length is 1.34 Å. The C(25)-N(18) bond length is 1.35 Å. The C(25)-H(27) bond length is 1.08 Å. In the twenty-sixth C site, C(26) is bonded in a distorted bent 120 degrees geometry to one C(27), one N(17), and one H(28) atom. The C(26)-C(27) bond length is 1.37 Å. The C(26)-N(17) bond length is 1.39 Å. The C(26)-H(28) bond length is 1.08 Å. In the twenty-seventh C site, C(27) is bonded in a 3-coordinate geometry to one C(26), one N(18), and one H(29) atom. The C(27)-N(18) bond length is 1.38 Å. The C(27)-H(29) bond length is 1.08 Å. In the twenty-eighth C site, C(28) is bonded in a trigonal planar geometry to one N(19), one N(20), and one H(30) atom. The C(28)-N(19) bond length is 1.35 Å. The C(28)-N(20) bond length is 1.35 Å. The C(28)-H(30) bond length is 1.08 Å. In the twenty-ninth C site, C(29) is bonded in a distorted bent 120 degrees geometry to one C(30), one N(19), and one H(31) atom. The C(29)-C(30) bond length is 1.38 Å. The C(29)-N(19) bond length is 1.38 Å. The C(29)-H(31) bond length is 1.08 Å. In the thirtieth C site, C(30) is bonded in a distorted bent 120 degrees geometry to one C(29), one N(20), and one H(32) atom. The C(30)-N(20) bond length is 1.39 Å. The C(30)-H(32) bond length is 1.08 Å. In the thirty-first C site, C(31) is bonded in a trigonal planar geometry to one N(21), one N(22), and one H(33) atom. The C(31)-N(21) bond length is 1.35 Å. The C(31)-N(22) bond length is 1.35 Å. The C(31)-H(33) bond length is 1.09 Å. In the thirty-second C site, C(32) is bonded in a distorted bent 120 degrees geometry to one C(33), one N(21), and one H(34) atom. The C(32)-C(33) bond length is 1.38 Å. The C(32)-N(21) bond length is 1.39 Å. The C(32)-H(34) bond length is 1.09 Å. In the thirty-third C site, C(33) is bonded in a distorted bent 120 degrees geometry to one C(32), one N(22), and one H(35) atom. The C(33)-N(22) bond length is 1.39 Å. The C(33)-H(35) bond length is 1.08 Å. In the thirty-fourth C site, C(37) is bonded in a trigonal planar geometry to one N(25), one N(26), and one H(40) atom. The C(37)-N(25) bond length is 1.33 Å. The C(37)-N(26) bond length is 1.36 Å. The C(37)-H(40) bond length is 1.08 Å. In the thirty-fifth C site, C(38) is bonded in a distorted bent 120 degrees geometry to one C(39), one N(26), and one H(42) atom. The C(38)-C(39) bond length is 1.37 Å. The C(38)-N(26) bond length is 1.38 Å. The C(38)-H(42) bond length is 1.08 Å. In the thirty-sixth C site, C(39) is bonded in a distorted bent 120 degrees geometry to one C(38), one N(25), and one H(43) atom. The C(39)-N(25) bond length is 1.38 Å. The C(39)-H(43) bond length is 1.09 Å. There are twenty-four inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Sm(1), one C(1), and one C(2) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Sm(2), one C(1), and one C(3) atom. In the third N site, N(3) is bonded in a distorted trigonal planar geometry to one Sm(1), one C(4), and one C(5) atom. In the fourth N site, N(4) is bonded in a distorted trigonal planar geometry to one Sm(2), one C(4), and one C(6) atom. In the fifth N site, N(5) is bonded in a distorted trigonal planar geometry to one Sm(1), one C(7), and one C(8) atom. In the sixth N site, N(6) is bonded in a distorted trigonal planar geometry to one Sm(2), one C(7), and one C(9) atom. In the seventh N site, N(7) is bonded in a distorted trigonal planar geometry to one Sm(1), one C(10), and one C(11) atom. In the eighth N site, N(8) is bonded in a distorted trigonal planar geometry to one Sm(3), one C(10), and one C(12) atom. In the ninth N site, N(9) is bonded in a distorted trigonal planar geometry to one Sm(1), one C(13), and one C(14) atom. In the tenth N site, N(10) is bonded in a distorted trigonal planar geometry to one Sm(3), one C(13), and one C(15) atom. In the eleventh N site, N(11) is bonded in a distorted water-like geometry to one Sm(1), one C(16), and one C(17) atom. In the twelfth N site, N(12) is bonded in a trigonal planar geometry to one C(16), one C(18), and one H(1) atom. The N(12)-H(1) bond length is 1.03 Å. In the thirteenth N site, N(13) is bonded in a distorted trigonal planar geometry to one Sm(2), one C(19), and one C(20) atom. In the fourteenth N site, N(14) is bonded in a distorted trigonal planar geometry to one Sm(3), one C(19), and one C(21) atom. In the fifteenth N site, N(15) is bonded in a distorted trigonal planar geometry to one Sm(2), one C(22), and one C(23) atom. In the sixteenth N site, N(16) is bonded in a distorted trigonal planar geometry to one Sm(3), one C(22), and one C(24) atom. In the seventeenth N site, N(17) is bonded in a distorted water-like geometry to one Sm(2), one C(25), and one C(26) atom. In the eighteenth N site, N(18) is bonded in a trigonal planar geometry to one C(25), one C(27), and one H(2) atom. The N(18)-H(2) bond length is 1.05 Å. In the nineteenth N site, N(19) is bonded in a distorted trigonal planar geometry to one Sm(3), one C(28), and one C(29) atom. In the twentieth N site, N(20) is bonded in a distorted trigonal planar geometry to one Sm(1), one C(28), and one C(30) atom. In the twenty-first N site, N(21) is bonded in a distorted trigonal planar geometry to one Sm(3), one C(31), and one C(32) atom. In the twenty-second N site, N(22) is bonded in a distorted trigonal planar geometry to one Sm(2), one C(31), and one C(33) atom. In the twenty-third N site, N(25) is bonded in a distorted water-like geometry to one C(37), one C(39), and one H(2) atom. The N(25)-H(2) bond length is 1.76 Å. In the twenty-fourth N site, N(26) is bonded in a trigonal planar geometry to one C(37), one C(38), and one H(41) atom. The N(26)-H(41) bond length is 1.04 Å. There are thirty-nine inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one N(12) atom. In the second H site, H(2) is bonded in a distorted single-bond geometry to one N(18) and one N(25) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(1) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(2) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(3) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(4) atom. In the seventh H site, H(7) is bonded in a single-bond geometry to one C(5) atom. In the eighth H site, H(8) is bonded in a single-bond geometry to one C(6) atom. In the ninth H site, H(9) is bonded in a single-bond geometry to one C(7) atom. In the tenth H site, H(10) is bonded in a single-bond geometry to one C(8) atom. In the eleventh H site, H(11) is bonded in a single-bond geometry to one C(9) atom. In the twelfth H site, H(12) is bonded in a single-bond geometry to one C(10) atom. In the thirteenth H site, H(13) is bonded in a single-bond geometry to one C(11) atom. In the fourteenth H site, H(14) is bonded in a single-bond geometry to one C(12) atom. In the fifteenth H site, H(15) is bonded in a single-bond geometry to one C(13) atom. In the sixteenth H site, H(16) is bonded in a single-bond geometry to one C(14) atom. In the seventeenth H site, H(17) is bonded in a single-bond geometry to one C(15) atom. In the eighteenth H site, H(18) is bonded in a single-bond geometry to one C(16) atom. In the nineteenth H site, H(19) is bonded in a single-bond geometry to one C(17) atom. In the twentieth H site, H(20) is bonded in a single-bond geometry to one C(18) atom. In the twenty-first H site, H(21) is bonded in a single-bond geometry to one C(19) atom. In the twenty-second H site, H(22) is bonded in a single-bond geometry to one C(20) atom. In the twenty-third H site, H(23) is bonded in a single-bond geometry to one C(21) atom. In the twenty-fourth H site, H(24) is bonded in a single-bond geometry to one C(22) atom. In the twenty-fifth H site, H(25) is bonded in a single-bond geometry to one C(23) atom. In the twenty-sixth H site, H(26) is bonded in a single-bond geometry to one C(24) atom. In the twenty-seventh H site, H(27) is bonded in a single-bond geometry to one C(25) atom. In the twenty-eighth H site, H(28) is bonded in a single-bond geometry to one C(26) atom. In the twenty-ninth H site, H(29) is bonded in a single-bond geometry to one C(27) atom. In the thirtieth H site, H(30) is bonded in a single-bond geometry to one C(28) atom. In the thirty-first H site, H(31) is bonded in a single-bond geometry to one C(29) atom. In the thirty-second H site, H(32) is bonded in a single-bond geometry to one C(30) atom. In the thirty-third H site, H(33) is bonded in a single-bond geometry to one C(31) atom. In the thirty-fourth H site, H(34) is bonded in a single-bond geometry to one C(32) atom. In the thirty-fifth H site, H(35) is bonded in a single-bond geometry to one C(33) atom. In the thirty-sixth H site, H(40) is bonded in a single-bond geometry to one C(37) atom. In the thirty-seventh H site, H(41) is bonded in a single-bond geometry to one N(26) atom. In the thirty-eighth H site, H(42) is bonded in a single-bond geometry to one C(38) atom. In the thirty-ninth H site, H(43) is bonded in a single-bond geometry to one C(39) atom. Linkers: 11 C1=CN=C[N]1 ,6 [CH]1C=NC=N1. Metal clusters: 6 [Sm]. The MOF has largest included sphere 2.56 A, density 1.85 g/cm3, surface area 3905.71 m2/g, accessible volume 0.14 cm3/g