Synthesis and crystal structure of trinuclear carboxylate complexes M3(μ3-O)(CF3COO)6L3

Oxocarboxylate complexes of 3d metals containing a trinuclear neutral or cationic [M₃(μ3-O)(CF₃COO)₆L₃]⁰,+ unit (M = Cr, Fe; L = MeCOOH, H₂O, CF₃COO–, THF) were obtained by electrolytic dissolution of a metal in CF₃COOH or by a reaction of a metal (or its compound) with CF₃COOH; the crystal structures of three complexes were studied by single X-ray crystallography.