Poly[[μ2-1,4-bis(imidazol-1-ylmethyl)benzene](μ4-3,5,9,11-tetraoxo-4,10-diazatetracyclo[5.5.2.02,6.08,12]tetradec-13-ene-4,10-diido)disilver(I)]

In the title complex, [Ag2(C12H8N2O4)(C14H14N4)]n, one AgI ion, lying on a twofold rotation axis, is coordinated by two N atoms from two 3,5,9,11-tetraoxo-4,10-diazatetracyclo[5.5.2.02,6.08,12]tetradec-13-ene-4,10-diide (L) ligands in a nearly linear arrangement. The other AgI ion, lying on an inversion center, is coordinated by two O atoms from two L ligands and two N atoms from two 1,4-bis(imidazol-1-ylmethyl)benzene ligands in a distorted square-planar geometry. An additional Ag...Ag [3.0119 (3) ] interaction links the AgI ions into a chain along [010]. The two types of ligands have mirror symmetry and connect the AgI ions into a layer parallel to (100).