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The crystal structure of the title salt, [Cu(ClO 4 )(C 8 H 20 N 4 )]ClO 4 , is reported. The Cu II ion exhibits a square-pyramidal geometry and is coordinated by the four N atoms of the neutral 1,4,7,10-tetra-aza-cyclo-dodecane (cyclen) ligand and an O atom from one perchlorate anion, with the second perchlorate ion hydrogen-bonded to one of the amine N atoms of the cyclen ligand. Additional N-H⋯O hydrogen bonds between the amine H atoms and the coordinating and non-coordinating perchlorate groups create a three-dimensional network structure. Crystals were grown from a concentrated methanol solution at ambient temperature, resulting in no co-crystallization of solvent.

Crystal structure of (perchlorato-κO)(1,4,7,10-tetraazacyclododecane-κ4N)copper(II) perchlorate

Crystal structure of (perchlorato-κO)(1,4,7,10-tetraazacyclododecane-κ⁴N)copper(II) perchlorate