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Key indicators: single-crystal X-ray study; T = 150 K; mean (C-C) = 0.004 Å; disorder in main residue; R factor = 0.048; wR factor = 0.139; data-to-parameter ratio = 16.2. The asymmetric unit of the title compound, [Cu 2 (C 5 HF 6 O 2 ) 4 -(C 11 H 9 NO) 2 ], contains one half of the centrosymmetric dinuclear complex. The coordination geometry of the Cu II atom is octahedral, exhibiting a typical Jahn-Teller distortion. One trifluoromethyl group is rotationally disordered between twodoi:10.1107/s1600536810022567 pmid:21587739 pmcid:PMC3006976 fatcat:6vfbsvunojawlnw6xx632gpmo4