Supramolecular Structure of a Cadmium–Silver Complex Forming a Two-Dimensional Network Embracing One-Dimensional Chains in a Layered Crystal Structure

The polymeric coordination compound, poly[trans-bis­(4-aminopyridine)cadmium(II)-bis[μ-dicyanoargentato(I)-N,N']]-catena-poly[(2-aminoethanol-N,O)(4-methylpyridine)[dicaynboargentato(I)-N]cadmium(II)-μ-[dicyanoargentato(I)-N,N']] (1/2), {[Cd(4-ampy)₂{μ-Ag(CN)₂}₂]. [Cd(mea)(4-ampy){Ag(CN)₂}μ-Ag(CN)₂}]₂}_n (4-ampy = 4-aminopyridine, C₅H₆N₂; mea = 2-aminoethanol: C₂H₇NO) has a supramolecular structure composed of a two-dimensional network of Cd-NCAgCN-Cd spans, where each Cd is ligated with two 4-ampy ligands in trans positions, embracing one-dimensional chains of (Cd-NCAgCN–)_n. In these chains each Cd is monodentately ligated by an –NCAgCN `branch' and a 4-ampy ligand, and bidentately chelated by mea. The network is stacked along the b axis to give a layered crystal structure, in which the monodentate –NCAgCN branch protruding from the chain penetrates through the mesh to form a hydrogen bond with the OH group of the mea ligand in the crystallographically equivalent chain in the adjacent layer.

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