title: Poly[[μ(2)-1,4-bis-(imidazol-1-ylmethyl)-benzene](μ(4)-3,5,9,11-tetra-oxo-4,10-diaza-tetra-cyclo-[5.5.2.0(2,6).0(8,12)]tetra-dec-13-ene-4,10-diido)disilver(I)].
abstract: In the title complex, [Ag(2)(C(12)H(8)N(2)O(4))(C(14)H(14)N(4))](n), one Ag(I) ion, lying on a twofold rotation axis, is coordinated by two N atoms from two 3,5,9,11-tetra-oxo-4,10-diaza-tetra-cyclo-[5.5.2.0(2,6).0(8,12)]tetra-dec-13-ene-4,10-diide (L) ligands in a nearly linear arrangement. The other Ag(I) 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-ylmeth-yl)benzene ligands in a distorted square-planar geometry. An additional Ag⋯Ag [3.0119 (3) Å] inter-action links the Ag(I) ions into a chain along [010]. The two types of ligands have mirror symmetry and connect the Ag(I) ions into a layer parallel to (100).
authors.affiliation: School of Chemistry and Life Science, Anshan Normal University, Anshan, Liaoning 114000,  People's Republic of China.
authors.forename: Yongmei
authors.initials: Y
authors.lastname: Zhang