Pushing the Ag-loading of CO2 electrolyzers to the minimum via molecularly tuned environments DOI Creative Commons
Kevinjeorjios Pellumbi,

Dominik Krisch,

Clara Rettenmaier

et al.

Cell Reports Physical Science, Journal Year: 2023, Volume and Issue: 4(12), P. 101746 - 101746

Published: Dec. 1, 2023

Electrochemically converting CO2 to renewable synthons is steadily becoming a globally scalable and important utilization technology. Nevertheless, most industrial endeavors employ catalysts based on metallic Ag or Au, with few catalytically competitive alternatives, showing similar activity, high mass cost efficiency. Similarly, this effort hindered by insufficient testing of promising materials in application-oriented conditions. We herein present holistic pathway starting from the conceptualization different Ag(I)-based molecular their complete integration into directly industrially applicable cell assemblies. Notably, optimization not only catalyst but also operational conditions allowed us achieve electrolysis for at least 110 h 300 mA cm−2 80 600 an FECO decay rate 0.01% h−1. Beyond significant activity improvements CO production, we provide community broad toolbox toward improving catalytic performance between sizes.

Language: Английский

Evidence for “cocktail”-type catalysis in Buchwald–Hartwig reaction. A mechanistic study DOI
Darya O. Prima, Malena Madiyeva, Julia V. Burykina

et al.

Catalysis Science & Technology, Journal Year: 2021, Volume and Issue: 11(21), P. 7171 - 7188

Published: Jan. 1, 2021

The mechanism of the C–N cross-coupling reaction, catalyzed by Pd/NHC, was evaluated at molecular and nanoscale levels. first evidence for involvement a “cocktail”-type system in Buchwald–Hartwig reaction is provided.

Language: Английский

Citations

22
Buchwald‐Hartwig Amination of Coordinating Heterocycles Enabled by Large‐but‐Flexible Pd‐BIAN‐NHC Catalysts** DOI

Donghui Li,

Xiao‐Bing Lan,

A‐Xiang Song

et al.

Chemistry - A European Journal, Journal Year: 2021, Volume and Issue: 28(4)

Published: Nov. 13, 2021

A new class of large-but-flexible Pd-BIAN-NHC catalysts (BIAN=acenaphthoimidazolylidene, NHC=N-heterocyclic carbene) has been rationally designed to enable the challenging Buchwald-Hartwig amination coordinating heterocycles. This robust BIAN-NHC permits cross-coupling under practical aerobic conditions a variety heterocycles with aryl, alkyl, and heteroarylamines, including historically oxazoles thiazoles as well electron-deficient containing multiple heteroatoms BIAN-INon (N,N'-bis(2,6-di(4-heptyl)phenyl)-7H-acenaphtho[1,2-d]imidazol-8-ylidene) most effective ligand. Studies on ligand structure electronic properties carbene center are reported. The study should facilitate discovery even more active catalyst systems based unique scaffold.

Language: Английский

Citations

21
Selenium-N-heterocyclic carbene (Se-NHC) complexes with higher aromaticity inhibit microbes: synthesis, structure, and biological potential DOI

Amna Kamal,

Muhammad Adnan Iqbal, Haq Nawaz Bhatti

et al.

Journal of Coordination Chemistry, Journal Year: 2022, Volume and Issue: 75(11-14), P. 1915 - 1928

Published: July 18, 2022

The synthesis of five selenium complexes bearing imidazole-based N-heterocyclic carbene ligands (Se-NHC) are reported. adducts were characterized by elemental and spectroscopic analysis (FTIR, 1H 13C NMR). Single-crystal XRD confirmed the structures two Se-NHC adducts, VIII XI. Zone inhibition (ZOI) values evaluated towards bacterial (Bacillus thuringiensis Escherichia coli) one fungal strain (Candida albicans). most active tested compound was XI with value 24.1 ± 0.1 mm against E. coli, it showed higher activity than Tetracycline (reference drug). Similarly, exhibited good potential C. albicans (26.5 0.2 mm). hemolytic assay demonstrated that compounds (VIII-XII) non-toxic to healthy human blood; however, thrombolysis indicated VIII-XII could be used as thrombolytic agents. It is concluded having more aromatic rings at terminal nitrogens imidazole effective other compounds. have efficacy strains strain.

Language: Английский

Citations

14
Pd-IHept-Catalyzed Ring-Opening of gem-Difluorocyclopropanes with Malonates Via Selective C–C Bond Cleavage: Synthesis of Monofluoroalkenes DOI
Yuxuan Yan, Huijun Qian, Leiyang Lv

et al.

The Journal of Organic Chemistry, Journal Year: 2023, Volume and Issue: 89(22), P. 16253 - 16261

Published: Sept. 22, 2023

Monofluoroalkene scaffolds are frequently found in various functional molecules. Herein, we report a Pd-IHept-catalyzed (NHC = N-heterocyclic carbene) defluorinative functionalization approach for the synthesis of monofluoroalkenes from

Language: Английский

Citations

8
Pushing the Ag-loading of CO2 electrolyzers to the minimum via molecularly tuned environments DOI Creative Commons
Kevinjeorjios Pellumbi,

Dominik Krisch,

Clara Rettenmaier

et al.

Cell Reports Physical Science, Journal Year: 2023, Volume and Issue: 4(12), P. 101746 - 101746

Published: Dec. 1, 2023

Electrochemically converting CO2 to renewable synthons is steadily becoming a globally scalable and important utilization technology. Nevertheless, most industrial endeavors employ catalysts based on metallic Ag or Au, with few catalytically competitive alternatives, showing similar activity, high mass cost efficiency. Similarly, this effort hindered by insufficient testing of promising materials in application-oriented conditions. We herein present holistic pathway starting from the conceptualization different Ag(I)-based molecular their complete integration into directly industrially applicable cell assemblies. Notably, optimization not only catalyst but also operational conditions allowed us achieve electrolysis for at least 110 h 300 mA cm−2 80 600 an FECO decay rate 0.01% h−1. Beyond significant activity improvements CO production, we provide community broad toolbox toward improving catalytic performance between sizes.

Language: Английский

Citations

8