𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Substituent effect on the redox potential of meso-substituted octaethylporphyrins and their zinc and copper complexes

✍ Scribed by Wu Guo-Zhang; Leung (Xiaoguang Liang) Hiu-Kwong; Gan Wei-Xing

Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
639 KB
Volume
46
Category
Article
ISSN
0040-4020

No coin nor oath required. For personal study only.

✦ Synopsis

meso-Substituent effect on the redox properties of octaethylporphyrin and its zinc(lI) and copper(I1) complexes are investigated with cyclic volatmmetry. The El/2 values were observed to correlate linearly with Hammett's d, constant for the first and second oxidation reaction and the first reduction reaction in the metallo-OEP series, with e values an order of magnitude larger than that of the TPP series. For the free base OEP series, steric effect has to be taken into consideration when discussing the meso-substituent effect of OEP's in addition to electronic effect. ' Dedicated to the 80th birthday of Professor Wang You Taken in part from the doctoral dissertation of G. W.

πŸ“œ SIMILAR VOLUMES

Effects of substituents and solvents on
Effects of substituents and solvents on the photochemical properties of zinc phthalocyanine complexes and their protonated derivatives
✍ Abimbola Ogunsipe; Tebello Nyokong πŸ“‚ Article πŸ“… 2004 πŸ› Elsevier Science 🌐 English βš– 232 KB

Zinc phthalocyanine derivatives containing various ring substituents and axial ligands were studied with respect to the effect of substituents on protonation. Aggregation resulted in failure of some of the ZnPc derivatives to protonate. In fact addition of protonating agents to aggregated ZnPc deriv

Effect of substitution on the redox beha
Effect of substitution on the redox behaviour and EPR spectra of zinc(II) substituted tetraphenylporphyrin cation radicals
✍ Paresh C. Dave; D. Srinivas πŸ“‚ Article πŸ“… 2000 πŸ› John Wiley and Sons 🌐 English βš– 101 KB πŸ‘ 2 views

Substituted tetraphenylporphyrinatozinc(II) complexes have been synthesized and characterized by various physicochemical techniques. The effects of substitution and counterions on the redox behaviour and EPR spectra have been examined. The EPR spectra revealed that chemical oxidation with bromine yi