μ-Acetato-μ-aqua-μ-hydroxo-bis[(1,4-dimethyl-1,4,7-triazacyclononane-κ³N)copper(II)] Diperchlorate

Structural characterization of the title complex, [Cu₂(C₂H₃O₂)(OH)(C₈H₁₉N₃)₂(H₂O)] (ClO₄)₂, provides only the third example of a binuclear copper complex containing a bridging water molecule. The three bridging groups (aqua, acetato and hydroxo) are all different, a rare feature for spontaneous self-assembly reactions. The resulting geometry about the two Cu atoms is distorted octahedral with the Cu—O(H) distance of 1.963 (2) Å distinguished from the Cu—O(H₂) distance of 2.737 (5) Å. The cation has crystallographically imposed mirror symmetry.

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