A hexanuclear Mn(II, III) pivalate cluster with a {Mn6O2} core

A new [Mn6O2(O2CCMe3)10(HO2CCMe3)(EtOH)3]∙EtOH hexanuclear mixed-valent coordination compound with a {Mn6O2} core has been synthesized and characterized by single-crystal X-ray diffraction analysis. The central mixed-valence [MnII 4MnIII 2(4-O2)]10+ core consists of six Mn centers, two MnIII and four MnII ions, arranged as two edge-sharing flattened Mn4 tetrahedra, with a 4-O 2 ion in the center of each tetrahedron. Peripheral ligation is provided by pivalate and ethanol groups.