用NMR法研究几种不对称双烃基硫桥六羰基二铁的异构化动力学

NMR Study on the Kinetics and Mechanisms of the Isomerization Reactions of Some Dialkylthiolatohexacarbonyldiiron Complexes

本文用常规核磁共振方法研究了(苄基硫)(烃基硫)六羰基二铁(烃基为甲基、乙基)和动态核磁共振方法研究了(苄基硫)(叔丁基硫)六羰基二铁的异构化反应动力学,提出了可能的反应机理,讨论了影响反应速率的因素.

The kinetics and mechanisms of the isomerization reactions of three dialkylthiolato-hexacarbonyldiirons(μ-PhCH2S)(μ-RS)Fe2(CO)6,R=Me(1),Et(2),t-Bu(3)havebeen studied by means of~1H NMR.The related kinetic parameters have been obtainedand the probable mechanism of the reactions has been proposed.The isomerizationreactions proceed most probably via a transition state involving the bond relaxation ofone S-Fe bond and the rotation of another S-Fe bond.