Luminescent zinc(II) and cadmium(II) complexes based on 2-(4,5-dimethyl-1H-imidazol-2-yl)pyridine and 2-(1-hydroxy-4,5-dimethyl-1H-imidazol-2-yl)pyridine
摘要:
Complexes (ZnLCl2)-Cl-1, (CdLCl2)-Cl-1, ZnL (2) (1) Cl-2 (center dot)1.5H(2)O, CdL (2) (1) Cl-2 (center dot)2H(2)O, CdL (2) (1) Cl-2 (MeOH)-Me-center dot center dot H2O [L-1 = 2-(4,5-dimethyl-1H-imidazol-2-yl)pyridine] and inner-complex compounds ZnL (2) (2) center dot 2H(2)O, CdL (2) (2) [HL2 = 2-(1-hydroxy-4,5-dimethyl-1H-imidazol-2-yl)pyridine] were synthesized. The complexes exhibit bright photoluminescence in the blue region of the spectrum, with the intensity exceeding this characteristic of the compounds L-1 and HL2. Compound L-1 in aqueous solution is a potential chemosensor for the determination of zinc and cadmium.