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Jia T, Meng D, Duan R, Ji H, Sheng H, Chen C, Li J, Song W, Zhao J. Single-Atom Nickel on Carbon Nitride Photocatalyst Achieves Semihydrogenation of Alkynes with Water Protons via Monovalent Nickel. Angew Chem Int Ed Engl 2023; 62:e202216511. [PMID: 36625466 DOI: 10.1002/anie.202216511] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/20/2022] [Accepted: 01/09/2023] [Indexed: 01/11/2023]
Abstract
Prospects in light-driven water activation have prompted rapid progress in hydrogenation reactions. We describe a Ni2+ -N4 site built on carbon nitride for catalyzed semihydrogenation of alkynes, with water supplying protons, powered by visible-light irradiation. Importantly, the photocatalytic approach developed here enabled access to diverse deuterated alkenes in D2 O with excellent deuterium incorporation. Under visible-light irradiation, evolution of a four-coordinate Ni2+ species into a three-coordinate Ni+ species was spectroscopically identified. In combination with theoretical calculations, the photo-evolved Ni+ is posited as HO-Ni+ -N2 with an uncoordinated, protonated pyridinic nitrogen, formed by coupled Ni2+ reduction and water dissociation. The paired Ni-N prompts hydrogen liberation from water, and it renders desorption of alkene preferred over further hydrogenation to alkane, ensuring excellent semihydrogenation selectivity.
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Affiliation(s)
- Tongtong Jia
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Di Meng
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Ran Duan
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hongwei Ji
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hua Sheng
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chuncheng Chen
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jikun Li
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Wenjing Song
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jincai Zhao
- Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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Britschgi J, Kersten W, Waldvogel SR, Schüth F. Electrochemically Initiated Synthesis of Methanesulfonic Acid. Angew Chem Int Ed Engl 2022; 61:e202209591. [PMID: 35972467 DOI: 10.1002/anie.202209591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Indexed: 01/07/2023]
Abstract
The direct sulfonation of methane to methanesulfonic acid was achieved in an electrochemical reactor without adding peroxide initiators. The synthesis proceeds only from oleum and methane. This is possible due to in situ formation of an initiating species from the electrolyte at a boron-doped diamond anode. Elevated pressure, moderate temperature and suitable current density are beneficial to reach high concentration at outstanding selectivity. The highest concentration of 3.7 M (approximately 62 % yield) at 97 % selectivity was reached with a stepped electric current program at 6.25-12.5 mA cm-2 , 70 °C and 90 bar methane pressure in 22 hours. We present a novel, electrochemical method to produce methanesulfonic acid, propose a reaction mechanism and show general dependencies between parameters and yields for methanesulfonic acid.
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Affiliation(s)
- Joel Britschgi
- Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim, Germany
| | - Wolfgang Kersten
- Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim, Germany
| | - Siegfried R Waldvogel
- Department Chemie, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, 55128, Mainz, Germany
| | - Ferdi Schüth
- Department of Heterogeneous Catalysis, Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470, Mülheim, Germany
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Pratihar S, Sarmah K, Shelte AR, Guha AK. Tetra metallic Copper Complex to Nanoscale Copper: Selective and Switchable Dehydrogenation-Hydrogenation under light. Chemistry 2021; 28:e202103383. [PMID: 34672401 DOI: 10.1002/chem.202103383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Indexed: 11/11/2022]
Abstract
Discrete photoactive ultrafine nanocluster of copper with less than hundreds of atoms comprising stimuli-responsive switchable redox-active states is highly desired to control two different antagonistic reactions. Herein, we disclosed mixed-valent tetra metallic copper complex ( C-1 ) of N-O-N Schiff base ligand, in which its five different Cu-Cu interaction was utilized for the generation of photoactive nanoscale copper [LCu(0) n , S-1 ] via the reduction of coordinated imine to the amine of C-1 . The presence of ligand providing stability and assist to homogenize the material ( S-1 ) in the organic solvent. It showed stimuli (O 2 /light) responsive switchable performance between its reduced ( S-1 ) and oxidized [LCu(0) n-m CuO m , S-2 ] state and serve as highly and poorly active (bi-state, relative rate > 5-12 fold) catalyst for dehydrogenation of alcohols to aldehydes and hydrogenation of nitroaromatics to amino aromatics under the light.
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Affiliation(s)
- Sanjay Pratihar
- Central Salt and Marine Chemicals Research Institute CSIR, Inorganic Material and Catalysis Division, G B Marg, Bhavnagar, Gujarat, 364002, Bhavnagar, INDIA
| | | | - Amishwar Raysing Shelte
- CSIR-CSMCRI: Central Salt and Marine Chemicals Research Institute CSIR, Inorganic Materials and Catalysis, 364002, INDIA
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