MoMn2H4(C6N5)2 crystallizes in the monoclinic P2_1 space group. Mo(1) is bonded in a 8-coordinate geometry to one C(1), one C(2), one C(3), one C(4), one C(5), one C(6), one C(7), and one C(8) atom. The Mo(1)-C(1) bond length is 2.18 Å. The Mo(1)-C(2) bond length is 2.17 Å. The Mo(1)-C(3) bond length is 2.15 Å. The Mo(1)-C(4) bond length is 2.16 Å. The Mo(1)-C(5) bond length is 2.15 Å. The Mo(1)-C(6) bond length is 2.14 Å. The Mo(1)-C(7) bond length is 2.15 Å. The Mo(1)-C(8) bond length is 2.14 Å. There are two inequivalent Mn sites. In the first Mn site, Mn(1) is bonded in a rectangular see-saw-like geometry to one N(3), one N(4), one N(5), and one N(6) atom. The Mn(1)-N(3) bond length is 2.19 Å. The Mn(1)-N(4) bond length is 2.22 Å. The Mn(1)-N(5) bond length is 2.21 Å. The Mn(1)-N(6) bond length is 2.20 Å. In the second Mn site, Mn(2) is bonded in a rectangular see-saw-like geometry to one N(10), one N(7), one N(8), and one N(9) atom. The Mn(2)-N(10) bond length is 2.28 Å. The Mn(2)-N(7) bond length is 2.17 Å. The Mn(2)-N(8) bond length is 2.14 Å. The Mn(2)-N(9) bond length is 2.28 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a distorted linear geometry to one Mo(1) and one N(1) atom. The C(1)-N(1) bond length is 1.15 Å. In the second C site, C(2) is bonded in a linear geometry to one Mo(1) and one N(2) atom. The C(2)-N(2) bond length is 1.15 Å. In the third C site, C(3) is bonded in a linear geometry to one Mo(1) and one N(3) atom. The C(3)-N(3) bond length is 1.15 Å. In the fourth C site, C(4) is bonded in a linear geometry to one Mo(1) and one N(4) atom. The C(4)-N(4) bond length is 1.14 Å. In the fifth C site, C(5) is bonded in a linear geometry to one Mo(1) and one N(5) atom. The C(5)-N(5) bond length is 1.16 Å. In the sixth C site, C(6) is bonded in a linear geometry to one Mo(1) and one N(6) atom. The C(6)-N(6) bond length is 1.15 Å. In the seventh C site, C(7) is bonded in a linear geometry to one Mo(1) and one N(7) atom. The C(7)-N(7) bond length is 1.15 Å. In the eighth C site, C(8) is bonded in a linear geometry to one Mo(1) and one N(8) atom. The C(8)-N(8) bond length is 1.15 Å. In the ninth C site, C(9) is bonded in a distorted trigonal planar geometry to one C(10), one N(9), and one H(1) atom. The C(9)-C(10) bond length is 1.39 Å. The C(9)-N(9) bond length is 1.34 Å. The C(9)-H(1) bond length is 0.95 Å. In the tenth C site, C(10) is bonded in a distorted trigonal planar geometry to one C(9), one N(10), and one H(2) atom. The C(10)-N(10) bond length is 1.34 Å. The C(10)-H(2) bond length is 0.95 Å. In the eleventh C site, C(11) is bonded in a distorted bent 120 degrees geometry to one C(12), one N(10), and one H(3) atom. The C(11)-C(12) bond length is 1.37 Å. The C(11)-N(10) bond length is 1.35 Å. The C(11)-H(3) bond length is 0.95 Å. In the twelfth C site, C(12) is bonded in a distorted trigonal planar geometry to one C(11), one N(9), and one H(4) atom. The C(12)-N(9) bond length is 1.35 Å. The C(12)-H(4) bond length is 0.95 Å. There are ten inequivalent N sites. In the first N site, N(1) is bonded in a single-bond geometry to one C(1) atom. In the second N site, N(2) is bonded in a single-bond geometry to one C(2) atom. In the third N site, N(3) is bonded in a bent 150 degrees geometry to one Mn(1) and one C(3) atom. In the fourth N site, N(4) is bonded in a linear geometry to one Mn(1) and one C(4) atom. In the fifth N site, N(5) is bonded in a linear geometry to one Mn(1) and one C(5) atom. In the sixth N site, N(6) is bonded in a bent 150 degrees geometry to one Mn(1) and one C(6) atom. In the seventh N site, N(7) is bonded in a distorted linear geometry to one Mn(2) and one C(7) atom. In the eighth N site, N(8) is bonded in a distorted linear geometry to one Mn(2) and one C(8) atom. In the ninth N site, N(9) is bonded in a trigonal planar geometry to one Mn(2), one C(12), and one C(9) atom. In the tenth N site, N(10) is bonded in a trigonal planar geometry to one Mn(2), one C(10), and one C(11) atom. There are four inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(9) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(10) atom. In the third H site, H(3) is bonded in a single-bond geometry to one C(11) atom. In the fourth H site, H(4) is bonded in a single-bond geometry to one C(12) atom. Linkers: 2 c1cnccn1. Metal clusters: 4 [Mn] ,2 [Mo]. The MOF has largest included sphere 4.67 A, density 1.37 g/cm3, surface area 3806.37 m2/g, accessible volume 0.38 cm3/g