Synthesis and crystal structure of a penta-copper(II) 12-metallacrown-4: -di-aqua-tetra-kis-(di-methyl-formamide-κ)manganese(II) tetra-kis-(μ-,2-dioxido-benzene-1-carboximidate)penta-copper(II) di-methyl-formamide monosolvate.

The title compound, [Mn(CHNO)(HO)][Cu(CHNO)]·CHNO or -[Mn(HO)(DMF)]{Cu[12-MC-4]}·DMF, where MC is metallacrown, shi is salicyl-hydroximate, and DMF is ,-di-methyl-formamide, crystallizes in the monoclinic space group 2/ Two crystallographically independent metallacrown anions are present in the structure, and both anions exhibit minor main mol-ecule disorder by an approximate (non-crystallographic) 180° rotation with occupancy ratios of 0.9010 (9) to 0.0990 (9) for one anion and 0.9497 (8) to 0.0503 (8) for the other. Each penta-copper(II) metallacrown contains four Cu ions in the MC ring and a Cu ion captured in the central cavity. Each Cu ion is four-coordinate with a square-planar geometry. The anionic {Cu[12-MC-4]} is charged-balanced by the presence of a -[Mn(HO)(DMF)] cation located in the lattice. In addition, the octa-hedral Mn counter-cation is hydrogen bonded to both MC anions the coordinated water mol-ecules of the Mn ion. The water mol-ecules form hydrogen bonds with the phenolate and carbonyl oxygen atoms of the shi ligands of the MCs.