Crystal structure of poly[(2,2'-bi-pyridine-κ(2) N,N')tetra-μ2-cyanido-κ(4) C:N;κ(4) N:C-manganese(II)disilver(I)].

The title compound, [Ag2Mn(CN)4(C10H8N2)] n or Mn(bipy){Ag(CN)2}2 (bipy = 2,2'-bi-pyridine) is isostructural with Cd(bipy){Au(CN)2}2 [Guo et al. (2009 ▸). CrystEngComm, 11, 61-66]. The Mn(II) atom has crystallographically imposed twofold symmetry and a distorted octa-hedral coordination sphere consisting of six N atoms from one bi-pyridine ligand and four di-cyano-argentate(I) anions, [Ag(CN)2](-), while the Ag(I) atom of the complex anion displays the expected linear geometry. Each [Ag(CN)2](-) unit connects to two neighbouring [Mn(bipy)](2+) cations to give an threefold inter-penetrating quartz-like three-dimensional framework. No directional inter-actions beyond van der Waals contacts are observed.