Ring of 12 hydrogen-bonded water molecules in a pyrite-like framework of heptacyanodicuprato(I)cadmate(II)[CdCu2(CN)7]3–

Abstract

The single crystal structure of [H₃₁O₁₄][CdCu₂(CN)₇] demonstrates an interpenetrating three-dimensional array of pyrite-like but negatively-charged framework [Cd²+{Cu₂(CN)₇}^5–] and a ring of 12 water molecules connected successively with two other waters, partly protonated, [H_X(H₂O)₂H_Y,(H₂O)₁₂]³⁺(x+y= 3), the ring of which encircles the pyrosilicate-like heptadicuprate(I) anion about the Cu–(CN)–Cu axis.