FeNiH8(C3N)6(CH)4C3NH2O2C5NH4O2 crystallizes in the monoclinic P2/m space group. The structure consists of two 02329_fluka molecules, two 2-nitropropene molecules, two propylene molecules, and two C5NH4O2 clusters inside a FeNiH8(C3N)6 framework. In each C5NH4O2 cluster, there are three inequivalent C sites. In the first C site, C(21) is bonded in a distorted trigonal planar geometry to two equivalent C(22) and one N(6) atom. Both C(21)-C(22) bond lengths are 1.40 Å. The C(21)-N(6) bond length is 1.47 Å. In the second C site, C(22) is bonded in a distorted trigonal planar geometry to one C(21), one C(23), and one H(12) atom. The C(22)-C(23) bond length is 1.39 Å. The C(22)-H(12) bond length is 1.09 Å. In the third C site, C(23) is bonded in a distorted single-bond geometry to one C(22) and one H(13) atom. The C(23)-H(13) bond length is 1.09 Å. N(6) is bonded in a trigonal planar geometry to one C(21) and two equivalent O(3) atoms. Both N(6)-O(3) bond lengths are 1.24 Å. There are two inequivalent H sites. In the first H site, H(13) is bonded in a single-bond geometry to one C(23) atom. In the second H site, H(12) is bonded in a single-bond geometry to one C(22) atom. O(3) is bonded in a single-bond geometry to one N(6) atom. In the FeNiH8(C3N)6 framework, there are two inequivalent Fe sites. In the first Fe site, Fe(1) is bonded in an octahedral geometry to two equivalent N(2) and four equivalent N(1) atoms. Both Fe(1)-N(2) bond lengths are 1.98 Å. All Fe(1)-N(1) bond lengths are 1.88 Å. In the second Fe site, Fe(2) is bonded in an octahedral geometry to two equivalent N(3) and four equivalent N(4) atoms. Both Fe(2)-N(3) bond lengths are 1.98 Å. All Fe(2)-N(4) bond lengths are 1.88 Å. Ni(1) is bonded in a rectangular see-saw-like geometry to two equivalent C(1) and two equivalent C(2) atoms. Both Ni(1)-C(1) bond lengths are 1.83 Å. Both Ni(1)-C(2) bond lengths are 1.83 Å. There are fourteen inequivalent C sites. In the first C site, C(1) is bonded in a linear geometry to one Ni(1) and one N(1) atom. The C(1)-N(1) bond length is 1.17 Å. In the second C site, C(2) is bonded in a linear geometry to one Ni(1) and one N(4) atom. The C(2)-N(4) bond length is 1.17 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(4), one N(2), and one H(1) atom. The C(3)-C(4) bond length is 1.38 Å. The C(3)-N(2) bond length is 1.35 Å. The C(3)-H(1) bond length is 1.09 Å. In the fourth C site, C(4) is bonded in a distorted single-bond geometry to one C(3), one C(5), and one H(2) atom. The C(4)-C(5) bond length is 1.41 Å. The C(4)-H(2) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a trigonal planar geometry to one C(4), one C(6), and one C(8) atom. The C(5)-C(6) bond length is 1.41 Å. The C(5)-C(8) bond length is 1.41 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one C(7), and one H(3) atom. The C(6)-C(7) bond length is 1.38 Å. The C(6)-H(3) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted trigonal planar geometry to one C(6), one N(2), and one H(4) atom. The C(7)-N(2) bond length is 1.35 Å. The C(7)-H(4) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a linear geometry to one C(5) and one C(9) atom. The C(8)-C(9) bond length is 1.23 Å. In the ninth C site, C(9) is bonded in a linear geometry to one C(10) and one C(8) atom. The C(9)-C(10) bond length is 1.34 Å. In the tenth C site, C(10) is bonded in a linear geometry to one C(11) and one C(9) atom. The C(10)-C(11) bond length is 1.23 Å. In the eleventh C site, C(11) is bonded in a linear geometry to one C(10) and one C(12) atom. The C(11)-C(12) bond length is 1.41 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one C(11) and two equivalent C(13) atoms. Both C(12)-C(13) bond lengths are 1.41 Å. In the thirteenth C site, C(13) is bonded in a distorted trigonal planar geometry to one C(12), one C(14), and one H(5) atom. The C(13)-C(14) bond length is 1.38 Å. The C(13)-H(5) bond length is 1.09 Å. In the fourteenth C site, C(14) is bonded in a distorted trigonal planar geometry to one C(13), one N(3), and one H(6) atom. The C(14)-N(3) bond length is 1.35 Å. The C(14)-H(6) bond length is 1.09 Å. There are four inequivalent N sites. In the first N site, N(1) is bonded in a linear geometry to one Fe(1) and one C(1) atom. In the second N site, N(2) is bonded in a trigonal planar geometry to one Fe(1), one C(3), and one C(7) atom. In the third N site, N(3) is bonded in a trigonal planar geometry to one Fe(2) and two equivalent C(14) atoms. In the fourth N site, N(4) is bonded in a linear geometry to one Fe(2) and one C(2) atom. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(3) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(4) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(6) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(7) atom. In the fifth H site, H(5) is bonded in a single-bond geometry to one C(13) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(14) atom. Linkers: 1 C(C#Cc1ccncc1)#Cc1ccncc1. Metal clusters: 2 [Fe]. The MOF has largest included sphere 3.17 A, density 1.55 g/cm3, surface area 4765.68 m2/g, accessible volume 0.17 cm3/g