Two novel Cr(III) complexes [Cr(SA)2(en)]TBA and [Cr(SA)(en)2]Br: Synthesis, characterization and spectral studies

► Two salicylate Cr(III)complexes [Cr(SA)2(en)]TBA and [Cr(SA)(en)2]Br were prepared. ► Their kinetics difference with apoovotransferrin were compared. ► The releasing SA is combined to OTf with serious fluorescence quenching of salicylate.