Electrochemistry of Fe(IV) and Mn(IV) corroles containing meso-dichlorophenyl substituents and the use of these compounds as catalysts for the electroreduction of dioxygen in acid media

Authors

LINA YE
ZHONGPING OU
DEYING MENG
MINGZHU YUAN
YUANYUAN FANG
KARL M. KADISH

Abstract

Two meso-dichlorophenyl substituted metallocorroles were synthesized and characterized as to their electrochemical and spectroelectrochemical properties in dichloromethane, benzonitrile, and pyridine containing 0.1 M tetra-n-butylammonium perchlorate (TBAP) as supporting electrolyte. The examined compounds are represented as (Cl_2Ph)_3CorFe^{IV}Cl and (Cl_2Ph)_3CorMn^{IV}Cl where (Cl_2Ph)_3Cor is the trianion of 5,10,15-tri(2,4-dichlorophenyl)corrole. Each metallocorrole was examined as to its catalytic activity for the electoreduction of dioxygen when coated on an edge-plane pyrolytic graphite electrode in 1.0 M HClO_4. Cyclic voltammetry combined with linear sweep voltammetry at a rotating disk electrode (RDE) and a rotating ring disk electrode (RRDE) was utilized to evaluate the catalytic activity for the electroreduction of O_2. The main O_2 reduction product is hydrogen peroxide under the given experimental conditions.

DOI

10.3906/kim-1407-26

Keywords

Metallocorroles, synthesis, electrochemistry, catalytic activity, dioxygen reduction

First Page

994

Last Page

1005

Recommended Citation

YE, L, OU, Z, MENG, D, YUAN, M, FANG, Y, & KADISH, K. M (2014). Electrochemistry of Fe(IV) and Mn(IV) corroles containing meso-dichlorophenyl substituents and the use of these compounds as catalysts for the electroreduction of dioxygen in acid media. Turkish Journal of Chemistry 38 (6): 994-1005. https://doi.org/10.3906/kim-1407-26