Three zinc complexes ([(DMOX)ZnX2], X = Cl (1), Br (2) or I (3)) containing bis(oxazoline) ligands were synthesized and characterized.
All zinc complexes showed activities in catalyzing hydrolysis of 4-nitrophenyl acetate (4-NA).
The active species in catalyzing the hydrolysis of 4-NA have also been confirmed by potentiometric pH titrations.