μ-Cyano-bis(2,2':6',2''-terpyridine-N,N',N'')dicopper(II) Perchlorate Acetonitrile, [Cu₂(CN)(C₁₅H₁₁N₃)₂](ClO₄)₃.CH₃CN

The [Cu₂(terpy)₂(CN)]³⁺ cation (terpy is 2,2′:6′,2′′-terpyridine) is non-centrosymmetric and contains two Cu^II centres bridged by a disordered cyano group. The overall geometry around both metallic centres can be described as a distorted octahedron. The equatorial coordination plane is occupied by the N atoms of the tridentate terpy ligand and by an atom (C* or N*) of the cyanide bridge. The axial positions for one Cu atom are occupied by O atoms of two perchlorate anions while, for the other Cu atom, a perchlorate ion and an acetonitrile molecule lie in trans positions.

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