Bis(μ-1,4-di-hydro-pyridin-4-one-κ2 O:O)di-μ-perchlorato-κ4 O:O'-bis-[aqua-(1,4-di-hydro-pyridin-4-one-κO)copper(II)] tetra-aqua-bis-(1,4-di-hydropyridin-4-one-κO)copper(II) tetra-kis-(perchlorate) 1,4-di-hydro-pyridin-4-one disolvate.

The reaction of copper(II) perchlorate hexa-hydrate with 4-pyridone and pyrazine in 1-propanol serendipitously yielded crystals of the solvated title double salt, [Cu(C5H5NO)2(H2O)4][Cu2(ClO4)2(C5H5NO)4(H2O)2](ClO4)4·2C5H5NO, as a biproduct. The copper cations in both the monometallic complex and the dimeric species exhibit classic Jahn-Teller-like elongations. All coordinating 4-pyridone mol-ecules are in the κ-O coordination mode. The dimeric component exhibits both bridging 4-pyridone and perchlorate ligands. Both complexes and the 4-pyridone mol-ecules are bound together by a network of classical hydrogen bonds. The non-coordinating perchlorate ions were modeled as three-site disordered and one of the coordinating 4-pyridone mol-ecules was modeled as two-site disordered.