Cr3Ag3C36N6H24O13 crystallizes in the hexagonal P6_3/mmc space group. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(4) and four equivalent O(2) atoms to form corner-sharing CrO5 square pyramids. The Cr(1)-O(4) bond length is 1.82 Å. All Cr(1)-O(2) bond lengths are 1.98 Å. In the second Cr site, Cr(2) is bonded to one O(4), two equivalent O(1), and two equivalent O(3) atoms to form corner-sharing CrO5 square pyramids. The Cr(2)-O(4) bond length is 1.92 Å. Both Cr(2)-O(1) bond lengths are 1.99 Å. Both Cr(2)-O(3) bond lengths are 1.98 Å. There are two inequivalent Ag sites. In the first Ag site, Ag(1) is bonded in a bent 150 degrees geometry to two equivalent N(2) atoms. Both Ag(1)-N(2) bond lengths are 2.24 Å. In the second Ag site, Ag(2) is bonded in a linear geometry to two equivalent N(1) atoms. Both Ag(2)-N(1) bond lengths are 2.14 Å. There are ten inequivalent C sites. In the first C site, C(1) is bonded in a distorted single-bond geometry to one C(10), one C(2), and one H(1) atom. The C(1)-C(10) bond length is 1.36 Å. The C(1)-C(2) bond length is 1.38 Å. The C(1)-H(1) bond length is 0.95 Å. In the second C site, C(2) is bonded in a distorted trigonal planar geometry to one C(1), one N(2), and one H(2) atom. The C(2)-N(2) bond length is 1.35 Å. The C(2)-H(2) bond length is 0.95 Å. In the third C site, C(3) is bonded in a bent 120 degrees geometry to one C(4), one O(2), and one O(3) atom. The C(3)-C(4) bond length is 1.50 Å. The C(3)-O(2) bond length is 1.26 Å. The C(3)-O(3) bond length is 1.23 Å. In the fourth C site, C(4) is bonded in a trigonal planar geometry to one C(3), one C(5), and one C(8) atom. The C(4)-C(5) bond length is 1.34 Å. The C(4)-C(8) bond length is 1.34 Å. In the fifth C site, C(5) is bonded in a distorted single-bond geometry to one C(4), one C(6), and one H(3) atom. The C(5)-C(6) bond length is 1.37 Å. The C(5)-H(3) bond length is 0.95 Å. In the sixth C site, C(6) is bonded in a distorted trigonal planar geometry to one C(5), one N(1), and one H(4) atom. The C(6)-N(1) bond length is 1.38 Å. The C(6)-H(4) bond length is 0.95 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 1.36 Å. The C(7)-H(5) bond length is 0.95 Å. In the eighth C site, C(8) is bonded in a distorted single-bond geometry to one C(4) and one H(6) atom. The C(8)-H(6) bond length is 0.95 Å. In the ninth C site, C(9) is bonded in a 2-coordinate geometry to one C(10) and two equivalent O(1) atoms. The C(9)-C(10) bond length is 1.51 Å. Both C(9)-O(1) bond lengths are 1.24 Å. In the tenth C site, C(10) is bonded in a trigonal planar geometry to one C(9) and two equivalent C(1) atoms. There are two inequivalent N sites. In the first N site, N(1) is bonded in a trigonal planar geometry to one Ag(2), one C(6), and one C(7) atom. In the second N site, N(2) is bonded in a distorted bent 120 degrees geometry to one Ag(1) and two equivalent C(2) atoms. There are six inequivalent H sites. In the first H site, H(1) is bonded in a single-bond geometry to one C(1) atom. In the second H site, H(2) is bonded in a single-bond geometry to one C(2) 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. There are four inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Cr(2) and one C(9) atom. In the second O site, O(2) is bonded in a distorted bent 150 degrees geometry to one Cr(1) and one C(3) atom. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one Cr(2) and one C(3) atom. In the fourth O site, O(4) is bonded in a trigonal planar geometry to one Cr(1) and two equivalent Cr(2) atoms. Linkers: 36 [O]C(=O)c1ccncc1. Metal clusters: 6 [C]1O[Cr]23O[C]O[Cr]45(O1)O[C]O[Cr](O[C]O2)(O[C]O3)(O[C]O4)O5 ,18 [Ag]. The MOF has largest included sphere 21.72 A, density 0.31 g/cm3, surface area 3621.91 m2/g, accessible volume 3.08 cm3/g