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γ-Ray Driven Aqueous-Phase Methane Conversions into Complex Molecules up to Glycine.
Angew Chem Int Ed Engl
January 2025
Key Laboratory of Precision and Intelligent Chemistry, iChEM, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026, P. R. China.
Article Synopsis
- A study explores the early evolution of molecules in the universe, focusing on the abundant simple molecule, CH (carbon hyride).
- It was found that high-energy γ-ray photons can drive the conversion of aqueous-phase CH into various products, especially glycine when ammonia is added, even at room temperature.
- The presence of solid granules modifies the conversion process, with the addition of SiO leading to a high selectivity for CHCOOH (82%), suggesting a possible pathway for creating complex organic compounds in space and improving carbon usage for valuable products.
Quantum computations in heavy noble-gas hydride cations: Reference energies and new spectroscopic data.
J Mol Graph Model
November 2023
Institute of Fundamental Physics, CSIC (IFF-CSIC), Serrano 123, 28006 Madrid, Spain. Electronic address:
Computational quantum chemistry has become a powerful tool with a wide range of possibilities to solve chemical-physical problems. As a result of this, the interest in the applications of computational quantum chemistry has expanded considerably, and has opened up novel research opportunities. In particular, those related to the characterization of heavy-atoms complexes, as most electronic structure calculations for such systems struggle with the problem posed by the large number of electrons present in them, and consequently, the introduction of relativistic effects.
View Article and Find Full Text PDFBrønsted Acids Promote Olefin Oxidations by Bioinspired Nonheme Co(PhIO)(OH) Complexes: A Role for Low-Barrier Hydrogen Bonds.
J Am Chem Soc
March 2023
Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China.
Introduction of Brønsted acids into biomimetic nonheme reactions promotes the oxidative ability of metal-oxygen complexes significantly. However, the molecular machinery of the promoted effects is missing. Herein, a comprehensive investigation of styrene oxidation by a cobalt(III)-iodosylbenzene complex, [(TQA)Co(OIPh)(OH)] (, TQA = tris(2-quinolylmethyl)amine), in the presence and absence of triflic acid (HOTf) was performed using density functional theory calculations.
View Article and Find Full Text PDFLaboratory surface astrochemistry experiments.
Rev Sci Instrum
May 2015
Institute of Chemical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
Although several research groups have studied the formation of H2 on interstellar dust grains using surface science techniques, few have explored the formation of more complex molecules. A small number of these reactions produce molecules that remain on the surface of interstellar dust grains and, over time, lead to the formation of icy mantles. The most abundant of these species within the ice is H2O and is of particular interest as the observed molecular abundance cannot be accounted for using gas-phase chemistry alone.
View Article and Find Full Text PDFA brief introduction and overview of the astrochemistry of dust, ice and gas and their interplay is presented. The importance of basic chemical physics studies of critical reactions is illustrated through a number of recent examples. Such studies have also triggered new insight into chemistry, illustrating how astronomy and chemistry can enhance each other.
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