Conformation Equilibrium of Iron(Ⅲ)-metal-free Porphyrin Dimers and Its Effect on Catalytic Activity for Cyclohexane Hydroxylation
REN Qi-Zhi, HUANG Jin-Wang, LIU Zhan-Liang, JI Liang-Nian 
Chem. J. Chinese Universities . 1998, (4): 497 -501 .