Some iron(III) complexes of 2-aminobenzothiazole

Synthesis and characterization of a proton transfer salt between 2,6-pyridinedicarboxylic acid and 2-aminobenzothiazole, and its complexes and their inhibition studies on carbonic anhydrase isoenzymes

“…O] in water (10 mL) was added dropwise to the solution of 1 (0.311 g, 1 mmol) in water/ethanol (1:1) (20 mL) with stirring at room temperature for 2 h. The reaction mixture was kept at room temperature for 2 weeks to give orange crystalline solid of complex 2 (0.4570 g, 75% yield) and green crystalline solid of complex 5 (0.5812 g, 60% yield). Other metal complexes were obtained as brown amorphous solid for 3 (0.5081 g, 65% yield) and as green amorphous solid for 4 (0.5725 g, 75% yield) (Figure 1 [41][42][43] .…”