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首页> 外文期刊>Geochemical Journal >Distinct distribution of soluble N-heterocyclic compounds between CM and CR chondrites
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Distinct distribution of soluble N-heterocyclic compounds between CM and CR chondrites

机译：CM和Cr chondrites之间的可溶性正杂环化合物的不同分布

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Very complex mixtures of organic compounds occur in extraterrestrial materials such as carbonaceous meteorites. These intricate signatures of meteoritic organic matter can provide clues to elucidate chemical evolution processes in space. Previously, these complex organic molecules have not been well-resolved in primitive meteorites, so the formation mechanisms of extraterrestrial organics remain largely conjectural. In this study, the occurrence and abundance of soluble CHN organic compounds were examined in CM vs. CR meteorites to investigate possible chemical processes associated with the different parent bodies. Hydrogenated alkylpiperidines (CnH2n+1N) are more abundant in the CR chondrite, in contrast to more abundant aromatic alkylpyridines (CnH2n-5N) in the CM chondrites. Both alkylpyridines and alkylpiperidines are most likely synthesized from simple aldehydes and ammonia on meteorite parent bodies, but the differences between the distribution of N-cyclic compounds are consistent with different redox conditions of the parent bodies which influenced the organic molecular evolution processes in extraterrestrial materials.
机译：非常复杂的有机化合物的混合物发生在外星材料如碳质陨石上。这些复杂的陨石有机物质可以提供阐明空间中化学进化过程的线索。以前，这些复杂的有机分子在原始陨石中没有得到良好分解，因此外星物体的形成机制仍然很大程度上是推动的。在该研究中，以cm与Cr.Cr陨石检查可溶性CHN有机化合物的发生和丰度，以研究与不同父母体相关的可能化学方法。氢化烷基哌啶（CNH2N + 1N）在CM chondrites中的更丰富的芳族烷基吡啶（CNH2N-5N）相反。烷基吡啶和烷基哌啶均最可能从陨石母体上的简单醛和氨合成，但是N环化合物的分布之间的差异与父母体的不同氧化还原条件一致，其影响外部材料中的有机分子演化过程。

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