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- W1496895574 abstract "Abstract– The molecular structure of the insoluble organic matter (IOM) from Murchison meteorite has been investigated by our group for several years using a large set of analytical methods including various spectroscopies (Fourier transform infrared spectroscopy, nuclear magnetic resonance, electron paramagnetic resonance, X‐ray absorption near‐edge spectroscopy), high resolution electron microscopy, and thermal (pyrolyses in the presence or not of tetramethylammonium hydroxide) and chemical (RuO 4 oxidation) degradations. Taken together, these techniques provided a wealth of qualitative and quantitative information, from which we derived 11 elemental and molecular parameters on the same IOM residue. In addition to the basic elemental composition, these parameters describe the distribution of the different types of carbon, nitrogen, and sulfur atoms as well as the size of the polyaromatic units. For this molecular structure, we therefore propose a model which fits with these 11 molecular quantitative parameters. Several cosmochemical implications are derived from this structure. Based on the fact that aromatic moieties are highly substituted and aliphatic chains highly branched, it can be anticipated that the synthesis of this IOM occurred through successive additions of single carbon units in the gas‐phase ending by a spontaneous cyclization for chain length ≥7 C. As a whole, these observations favor an organosynthesis in the solar T‐Tauri disk." @default.
- W1496895574 created "2016-06-24" @default.
- W1496895574 creator A5041238836 @default.
- W1496895574 creator A5058536006 @default.
- W1496895574 date "2010-09-01" @default.
- W1496895574 modified "2023-10-16" @default.
- W1496895574 title "Model of molecular structure of the insoluble organic matter isolated from Murchison meteorite" @default.
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- W1496895574 doi "https://doi.org/10.1111/j.1945-5100.2010.01122.x" @default.
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