Synthesis and Characterization of Some New Organic Derivatives of Organobismuth (III) with 2,3-Dihydro-2, 2-Disubstituted Benzothiazole

Abstract

2,3-dihydro-2,2-disubstituted benzothiazole reacts with triphenyl bismuth in a 1:1 molar ratio in dry benzene solution surprisingly to yield substituted derivatives of the type Ph2Bi[SC6H4N = CR(R′)], where R = R′ = C2H5;R = CH3, and R′ = CH3,C6H5,C6H4CH3-4,C6H4Cl-4,R = H,R′ = C6H5. To ensure completion of the reaction, the mixture was refluxed for ∼ 8–10 hours. The solvent was removed under reduced pressure, which yielded dark brown viscous liquid and solids. The newly synthesized compounds are found to be soluble in common organic solvents (e.g., CHCl3, CH2Cl2 etc.) and have been characterized by spectroscopic methods (IR, NMR,1H, and 13C) and physical chemical studies. On the above basis, a bidentate chelating structure has been suggested.