摘要
合成了Mn(Ⅲ )_Mn(Ⅲ )单核和双核金属卟啉配合物 ,用元素分析、紫外可见光谱进行表征 .研究了这些双核金属卟啉模拟细胞色素P_4 5 0催化环己烷单充氧作用及金属卟啉在 2种反应体系中催化性能 .对于催化活性随着 2个金属卟啉之间碳链增长而增长 ,反应体系的改变引起催化活性的改变的规律与前面铁卟啉是一致的 .但锰卟啉催化活性普遍高于其相应的铁卟啉 。
Mono- and dinuclear manganese(Ⅲ) porphyrins were prepared. All of the porphyrins and their metal complexes were characterized by UV-Vis, EA and 1HNMR.These metalloporphrins were used as the model to mimic cytochrome P-450 for the monooxygenation of cyclohexane and the catalytic activity of metalloporphyrin was stuydied in the two solvents. From the experimental results, the catalytic activities of dinuclear metalloporphyrins increase as the linkage units between the porphyrin rings are lengthened. Changing the solvent for the monooxygenation of cyclochexane, the catalytic activity will be changed too. This result is similar to iron porphyrin. But the catalytic activities of Mn(Ⅲ)porphyrins are higher than those of the corresponding Fe(Ⅲ) porphyrins and the selectivities of Fe(Ⅲ)porphyrins are more effective than the corresponding Mn(Ⅲ) porphrins.
出处
《曲阜师范大学学报（自然科学版）》
CAS
2004年第3期65-68,共4页
Journal of Qufu Normal University(Natural Science)
