Abstract

The S4-symmetric copper(I) tetramer Cu4(MEPA)4, MEPAH = N-(2-mercaptoethyl)picolylamine, exhibits a tetragonal bisphenoidal (D2d) arrangement of the metal centers. The MEPA- ligands use μ-thiolate and the amine nitrogen centers for coordination, while the 2-pyridyl groups are not involved in Cu(I) coordination but in an intramolecular hydrogen-bonding network with the metal-bound and thus cooperatively activated secondary amine functions.

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