Abstract
Cu+ and Cu0 centers are found in the mixed valent compounds [Cu32As30(dppm)8] (structure shown in the picture) and [Cu26Te12(PEt2Ph)12] which formally contain a Cu3230+ or a Cu2624+ cluster core, respectively. Calculations of the electronic band structure show that a localization of the formal oxidation states is impossible. Both compounds contain a central Cu6 octahedron. The short Cu−Cu bonds do not result from d10–d10 interactions. dppm=methylene[(diphenyl)phosphine].
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