Building a two-dimensional network from mixed-valence copper units held together by acetone bridges

Abstract

The mixed-valence supramolecular product di-μ2-acetone-di-μ3-trifluoroacetato-deca-μ2-trifluoroacetato-octacopper(I)dicopper(II), [Cu10(C2F3O2)12(C3H6O)2] or {[CuI4(O2CCF3)4]2–{μ2-OC(CH3)2}2–[CuII2(O2CCF3)4]}, was prepared by co-deposition of two building units, namely a bis-acetone adduct of [CuII2(O2CCF3)4] and a very electrophilic tetranuclear [CuI4(O2CCF3)4] complex. The asymmetric unit contains one molecule of the compound with a total of ten independent Cu atoms. Acetone molecules serve as bridges between the [CuII2(O2CCF3)4] and [CuI4(O2CCF3)4] units. Additionally, the tetracopper(I) trifluoroacetate units are involved in intermolecular Cu...O interactions, forming a layered two-dimensional network in the extended structure.