Cleavage of a Csingle bondC bond during a solvothermal process leading to a mononuclear rhenium(III) product

A new system is reported, where solvothermal conditions lead to a cleavage of a Csingle bondC bond in 2,2′-bipyridine-3,3′,6,6′-tetracarboxylic acid, that might be catalyzed by the starting rhenium salt, ammonium hexachloridorhenate(IV). The resulting product (1) is a rhenium(III) complex, including the applied ligand and its decomposition product in the Re3 + ion coordination sphere. 1 is characterized by X-ray diffraction, magnetic and spectroscopic, as well as TGA property measurements.