作者:Chang Hoon Lee、Dilek K. Dogutan、Daniel G. Nocera
DOI:10.1021/ja202136y
日期:2011.6.15
A cobalt(II) hangman porphyrin with a xanthene backbone and a carboxylic acid hanging group catalyzes the electrochemical production of hydrogen from benzoic and tosic acid in acetonitrile solutions. We show that (CoH)-H-II is exclusively involved in the generation of H-2 from weak acids. In a stronger acid, a (CoH)-H-III species is observed electrochemically, but it still needs to be further reduced to (CoH)-H-II before H-2 generation occurs. Overpotentials for H-2 generation are lowered as a result of the hangman effect.
METHODS AND COMPOSITIONS COMPRISING MACROCYCLES, INCLUDING HALOGENATED MACROCYCLES
申请人:Nocera Daniel G.
公开号:US20120318679A1
公开(公告)日:2012-12-20
The present invention relates generally to methods and compositions comprising macrocycles. In some cases, at least one beta-position of the macrocycle comprises an electron-withdrawing group, for example, a halide. In some embodiments, methods for forming and/or modifying a macrocycle using microwave energy are provided. In some embodiments, the compositions are employed in catalysis reactions.