Amazinga abonwako wama-isomer we-COM ku-ISM anikela ilwazi eliqakathekileko ngekhemistri nefiziksi yamagesi, ekugcineni, umlando wamafu wamamolekhyuli.
Okuqukethwe kwe-c-HCOOH acid ngaphakathi komgogodla obandako kungu-6% kwaphela wokuqukethwe kwe-c-HCOOH isomer, begodu umsuka wayo awukaziwa. Lapha sihlathulula ubukhona be-c-HCOOH emafini wamamolekhyuli amnyama ngokubhujiswa nokunciphisa i-c-HCOOH ne-t-HCOOH ngesikhathi semijikelezo ebandakanya i-HCOOH namamolekhyuli amanengi khulu afana ne-HCO+ ne-NH3.
Sisebenzise indlela ye-ab initio enabileko ukubala ukusabalala kwamandla okungenzeka kwe-c-HCOOH kanye ne-t-HCOOH yokuphuka/ukujikeleza. Izinga elifanako lephasi loke kanye nama-branching factors abalwa ngokuya ngethiyori yobujamo bokutjhuguluka kanye nefomu le-equation ekulu ngaphasi kweemeko ezijayelekileko ze-ISM.
I-HCOOH iyabhujiswa lokha nayihlangana ne-HCO+ esigabeni segesi ukwakha ama-isomer amathathu we-HC(OH)2+ cation. Ama-cation avamise khulu angahlangana namanye amamolekhyuli avamileko ku-ISM, afana ne-NH3, ngesinyathelo sesibili ukutjhugulula i-c-HCOOH ne-t-HCOOH. Indlela le ihlathulula ukwakheka kwe-c-HCOOH emafini wamamolekhyuli amnyama. Nakuqalwa indlela le, inani le-c-HCOOH eliqathaniswa ne-t-HCOOH bekungu-25.7%.
Ukuhlathulula i-6% yezinto ezibonwako, siphakamisa ukucabangela enye indlela yokubhujiswa kwe-HCOOH cation. Indlela yokulandelana ye-asidi-base (SAB) ehlongozwe emsebenzini lo ifaka hlangana ikambiso ekhawulezako yamamolekhyuli evame khulu ku-ISM.
Ngalokho-ke, i-HCOOH kungenzeka bona ibe nokutjhuguluka esikuphakamisileko ngaphasi kweemeko zamafu wamamolekhyuli amnyama. Le yindlela etja ngaphakathi kwe-isomerism yamamolekhyuli we-organic ku-ISM, engalinga ukuhlathulula ubudlelwano hlangana nama-isomers wamamolekhyuli we-organic atholakala ku-ISM.
U-John Garcia, Isascen Jimenez-Serra, Jose Carlos Colchado, Germaine Morpeceres, Antonio Martinez-Henares, Victor M. Rivera, Laura Corzi, uJesu Martin-Painde
Izifundo: I-Galactic Astrophysics (astro-ph.GA), i-Chemical Physics (physical.chem-ph) Ibizwe ngokuthi: arXiv:2301.07450 [astro-ph.GA] (nofana le nguqulo arXiv:2301.07450v1 [astro-ph.GA] ) Umlando wokwenza ngu-Garcia la Concepcion [18] uTjhirhweni 2023 11:45:25 UTC (1909 KB) https://arxiv.org/abs/2301.07450 I-Astrobiology, i-astrochemistry
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