FeAg2H8(C3N2)4 crystallizes in the monoclinic C2 space group. Fe(1) is bonded in an octahedral geometry to one N(3), one N(4), one N(5), one N(6), one N(7), and one N(8) atom. The Fe(1)-N(3) bond length is 1.90 Å. The Fe(1)-N(4) bond length is 1.90 Å. The Fe(1)-N(5) bond length is 1.92 Å. The Fe(1)-N(6) bond length is 1.93 Å. The Fe(1)-N(7) bond length is 2.03 Å. The Fe(1)-N(8) bond length is 2.45 Å. There are four inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a linear geometry to two equivalent C(9) atoms. Both Ag(1)-C(9) bond lengths are 2.04 Å. In the second Ag site, Ag(2) is bonded in a linear geometry to two equivalent C(10) atoms. Both Ag(2)-C(10) bond lengths are 2.04 Å. In the third Ag site, Ag(3) is bonded in a distorted tetrahedral geometry to two equivalent C(2) and two equivalent N(1) atoms. Both Ag(3)-C(2) bond lengths are 2.12 Å. Both Ag(3)-N(1) bond lengths are 2.55 Å. In the fourth Ag site, Ag(4) is bonded in a distorted trigonal pyramidal geometry to two equivalent C(1) and two equivalent N(2) atoms. Both Ag(4)-C(1) bond lengths are 2.11 Å. Both Ag(4)-N(2) bond lengths are 2.55 Å. There are twelve inequivalent C sites. In the first C site, C(1) is bonded in a distorted linear geometry to one Ag(4) and one N(5) atom. The C(1)-N(5) bond length is 1.18 Å. In the second C site, C(2) is bonded in a 2-coordinate geometry to one Ag(3) and one N(6) atom. The C(2)-N(6) bond length is 1.18 Å. In the third C site, C(3) is bonded in a distorted trigonal planar geometry to one C(5), one N(7), and one H(1) atom. The C(3)-C(5) bond length is 1.39 Å. The C(3)-N(7) 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 trigonal planar geometry to one C(6), one N(8), and one H(2) atom. The C(4)-C(6) bond length is 1.39 Å. The C(4)-N(8) bond length is 1.34 Å. The C(4)-H(2) bond length is 1.09 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(3) and one H(3) atom. The C(5)-H(3) bond length is 1.09 Å. In the sixth C site, C(6) is bonded in a distorted single-bond geometry to one C(4) and one H(4) atom. The C(6)-H(4) bond length is 1.09 Å. In the seventh C site, C(7) is bonded in a distorted bent 120 degrees geometry to one N(1) and one H(5) atom. The C(7)-N(1) bond length is 1.35 Å. The C(7)-H(5) bond length is 1.09 Å. In the eighth C site, C(8) is bonded in a distorted bent 120 degrees geometry to one N(2) and one H(6) atom. The C(8)-N(2) bond length is 1.35 Å. The C(8)-H(6) bond length is 1.09 Å. In the ninth C site, C(9) is bonded in a linear geometry to one Ag(1) and one N(3) atom. The C(9)-N(3) bond length is 1.17 Å. In the tenth C site, C(10) is bonded in a distorted linear geometry to one Ag(2) and one N(4) atom. The C(10)-N(4) bond length is 1.18 Å. In the eleventh C site, C(11) is bonded in a trigonal planar geometry to one N(1), one N(7), and one H(7) atom. The C(11)-N(1) bond length is 1.33 Å. The C(11)-N(7) bond length is 1.36 Å. The C(11)-H(7) bond length is 1.09 Å. In the twelfth C site, C(12) is bonded in a trigonal planar geometry to one N(2), one N(8), and one H(8) atom. The C(12)-N(2) bond length is 1.34 Å. The C(12)-N(8) bond length is 1.34 Å. The C(12)-H(8) bond length is 1.09 Å. There are eight inequivalent N sites. In the first N site, N(1) is bonded in a distorted trigonal planar geometry to one Ag(3), one C(11), and one C(7) atom. In the second N site, N(2) is bonded in a distorted trigonal planar geometry to one Ag(4), one C(12), and one C(8) atom. In the third N site, N(3) is bonded in a linear geometry to one Fe(1) and one C(9) atom. In the fourth N site, N(4) is bonded in a linear geometry to one Fe(1) and one C(10) atom. In the fifth N site, N(5) is bonded in a linear geometry to one Fe(1) and one C(1) atom. In the sixth N site, N(6) is bonded in a linear geometry to one Fe(1) and one C(2) atom. In the seventh N site, N(7) is bonded in a trigonal planar geometry to one Fe(1), one C(11), and one C(3) atom. In the eighth N site, N(8) is bonded in a distorted trigonal planar geometry to one Fe(1), one C(12), and one C(4) atom. There are eight 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(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(7) atom. In the sixth H site, H(6) is bonded in a single-bond geometry to one C(8) 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(12) atom. Linkers: 4 c1cncnc1. Metal clusters: 2 [Fe] ,2 [Ag][Ag]. The MOF has largest included sphere 1.96 A, density 2.45 g/cm3, surface area 2912.91 m2/g, accessible volume 0.08 cm3/g