Photochemical Water-Splitting with Organomanganese Complexes
| Autor: | Anthony F. Cannella, Karthika J. Kadassery, David C. Lacy, Suman Kr Dey, Roshaan Surendhran |
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| Rok vydání: | 2017 |
| Předmět: |
Chemical substance
010405 organic chemistry Chemistry Chromophore 010402 general chemistry Photochemistry 01 natural sciences Dissociation (chemistry) 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Tetramer Water splitting Physical and Theoretical Chemistry Hydrogen peroxide Chemical decomposition Hydrogen production |
| Zdroj: | Inorganic Chemistry. 56:9954-9965 |
| ISSN: | 1520-510X 0020-1669 |
| DOI: | 10.1021/acs.inorgchem.7b01483 |
| Popis: | Certain organometallic chromophores with water-derived ligands, such as the known [Mn(CO)3(μ3–OH)]4 (1) tetramer, drew our attention as possible platforms to study water-splitting reactions. Herein, we investigate the UV irradiation of various tricarbonyl organomanganese complexes, including 1, and demonstrate that dihydrogen, CO, and hydrogen peroxide form as products in a photochemical water-splitting decomposition reaction. The organic and manganese-containing side products are also characterized. Labeling studies with 18O-1 suggest that the source of oxygen atoms in H2O2 originates from free water that interacts with 1 after photochemical dissociation of CO (1-CO) constituting the oxidative half-reaction of water splitting mediated by 1. Hydrogen production from 1 is the result of several different processes, one of which involves the protons derived from the hydroxido ligands in 1 constituting the reductive half-reaction of water splitting mediated by 1. Other processes that generate H2 are also oper... |
| Databáze: | OpenAIRE |
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