In order to investigate the performance of molybdenum complexes in the catalytic epoxidation of cyclohexene,three Schiff base molybdenum complexes with different electronic effects were synthesised and characterised by a range of analytical techniques,including infrared spectroscopy,UV-visible spectroscopy,X-ray single-crystal diffraction and thermogravimetric analysis.The cyclohexene epoxidation reaction was conducted using a Schiff base molybdenum complex(L1)2-Mo as the catalyst and hydrogen peroxide as the oxidant.Under optimal conditions,the reaction yielded 81.75％conversion and 94.25％selectivity.The experimental results demonstrated that the incorporation of electron-pushing groups into the Schiff base molybdenum complexes could enhance the catalyst activity.
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