Citation:
GUO Rui, OU Zhong-Ping, YE Li-Na, HUANG Wen-Hao, XUE Zhao-Li, TANG Ji-Jun, FANG Yuan-Yuan. Cobalt Triarylcorroles with Sterically Hindered Haloginated Phenyl Rings: Synthesis, Crystal Structure and Catalytic Activity for Electroreduction of Dioxygen[J]. Chinese Journal of Structural Chemistry,
2016, 35(11): 1754-1763.
doi:
10.14102/j.cnki.0254-5861.2011-1156
Cobalt Triarylcorroles with Sterically Hindered Haloginated Phenyl Rings: Synthesis, Crystal Structure and Catalytic Activity for Electroreduction of Dioxygen
摘要:
Three new cobalt triarylcorroles with sterically hindered haloginated phenyl rings were synthesized and characterized by UV-vis, 1H NMR spectroscopy, mass spectrometry and electrochemistry. The compounds are represented as (Ar)3CorCo(PPh3), where Cor is a trianion of the corrole macrocycle and Ar is a 2-ClPh (1), 2,6-diClPh (2) or 2,6-diFPh (3) group on each of the three meso-positions. The structures of 1 and 3 were characterized in the solid state by single-crystal X-ray analysis. Rotating-disk electrode was utilized to examine the electrocatalytic activity of the corroles for reduction of O2 in 1.0 M HClO4. Effect of the sterically hindered meso-substituents on UV-vis spectra and redox potentials as well as the electrocatalytic activity for reduction of dioxygen was discussed.
English
Cobalt Triarylcorroles with Sterically Hindered Haloginated Phenyl Rings: Synthesis, Crystal Structure and Catalytic Activity for Electroreduction of Dioxygen
Abstract:
Three new cobalt triarylcorroles with sterically hindered haloginated phenyl rings were synthesized and characterized by UV-vis, 1H NMR spectroscopy, mass spectrometry and electrochemistry. The compounds are represented as (Ar)3CorCo(PPh3), where Cor is a trianion of the corrole macrocycle and Ar is a 2-ClPh (1), 2,6-diClPh (2) or 2,6-diFPh (3) group on each of the three meso-positions. The structures of 1 and 3 were characterized in the solid state by single-crystal X-ray analysis. Rotating-disk electrode was utilized to examine the electrocatalytic activity of the corroles for reduction of O2 in 1.0 M HClO4. Effect of the sterically hindered meso-substituents on UV-vis spectra and redox potentials as well as the electrocatalytic activity for reduction of dioxygen was discussed.
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Key words:
- cobalt triarylcorroles
- / synthesis
- / crystal structure
- / electrocatalysis
- / oxygen reduction
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