Citation: Xiao Xia LU, Hong Bo LI, Wei ZENG, Hua YANG, Sheng Ying QIN. Dioxygen Affinities and Biomimetic Catalytic Performance of Transition-metal Complexes with Crowned Bis-Schiff Bases[J]. Chinese Chemical Letters, ;2000, 11(12): 1053-1056. shu

Dioxygen Affinities and Biomimetic Catalytic Performance of Transition-metal Complexes with Crowned Bis-Schiff Bases

Department of Chemistry, Sichuan University, Chengdu 610064

Received Date: 30 May 2000

The dioxygen affinities and biomimetic catalytic performance of transition-metal complexes with (15-crown-5) salophen and its substituted derivatives were examined. The oxygenation constants of Co(Ⅱ) complexes with crowned bis-Schiff bases were measured and their Mn(Ⅲ) complexes were employed as models to mimic monooxygenase in catalytic epoxidation of styrene. The highest conversion and selectivity were up to 57.2% and 100% respectively at ambient temperature and pressure. The effects of crown ether ring and substituents R on the dioxygen affinities and catalytic activities were also investigated through comparing with the uncrowned analogues.
- Transition-metal complex,
- (15-crown-5) salophen,
- dioxygen affinity,
- catalytic epoxidation,
- monooxygenase-mimicking
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