Abstract: | In the title compound, Cu(C6F5COO)2(C4H4N2)]n, (I), the asymmetric unit contains one CuII cation, two anionic pentafluorobenzoate ligands and one pyrazine ligand. Each CuII centre is five‐coordinated by three O atoms from three independent pentafluorobenzoate anions, as well as by two N atoms from two pyrazine ligands, giving rise to an approximately square‐pyramidal coordination geometry. Adjacent CuII cations are bridged by a pyrazine ligand and two pentafluorobenzoate anions to give a two‐dimensional layer. The layers are stacked to generate a three‐dimensional supramolecular architecture via strong intermolecular C—H...F—C interactions, as indicated by the F...H distance of 2.38 Å. |