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metal-organic compounds
A cubane-type Cu4O4 core have been found in the title tetrameric copper(II) complex {tetrakis(μ-3-bromobenzoato)-1κO:2κO';2κO:3κO';3κO:4κO';4κO:1κO'- tetrakis[μ-2-(dimethylamino)ethanolato]-1κN,1:2:3κ3O;2κN,2:3:4κ3O; 3κN,3:4:1κ3O;4κN,4:1:2κ3O-tetracopper(II), [Cu4(C7H4BrO2)4(C4H10NO)4]}. The short Cu—Oethanolato bonds form an eight-membered ring folded in a boat-like conformation. The Cu
Cu distances vary between 3.121 (2) and 3.796 (3) Å. Each Cu atom has a distorted octahedral environment. Two ethanolato O atoms, a carboxyl O atom and an amino N atom form the equatorial coordination plane, with Cu—O bond lengths in the range 1.914 (12)–1.954 (14) Å and Cu—N bond lengths in the range 2.011 (12)–2.057 (13) Å. The axial sites are occupied by an ethanolato O atom and an O atom of the carboxylate group, with Cu—O distances in the range 2.443 (8)–2.877 (9) Å.
Cu distances vary between 3.121 (2) and 3.796 (3) Å. Each Cu atom has a distorted octahedral environment. Two ethanolato O atoms, a carboxyl O atom and an amino N atom form the equatorial coordination plane, with Cu—O bond lengths in the range 1.914 (12)–1.954 (14) Å and Cu—N bond lengths in the range 2.011 (12)–2.057 (13) Å. The axial sites are occupied by an ethanolato O atom and an O atom of the carboxylate group, with Cu—O distances in the range 2.443 (8)–2.877 (9) Å.
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