Ebipimo ebireebirwe ebya COM isomers omu ISM nibituha amakuru g’omugasho agarikukwata aha kemikoro n’eby’obuhangwa bya gaasi kandi, aha muheru, ebyafaayo by’ebicu bya molekyu.
Ebirimu c-HCOOH acid omu core erikwotsya ni 6% zonka ez’ebirimu c-HCOOH isomer, kandi obukomooko bwayo tiburikumanywa. Aha nitushoboorora okubaho kwa c-HCOOH omu bicu by’ebicweka by’omubiri ebirikwiragura ahabw’okucwekyereza n’okukyendeeza c-HCOOH na t-HCOOH omu bwire bw’enzindo ezirimu HCOOH n’ebicweka by’omubiri bingi munonga nka HCO+ na NH3.
Twakoresa enkora ya ab initio eyongyeirweho kubara okugabwa kw‘amaani okurikubaasa kubaho ahabw‘emihanda y‘okuhenda/okuvuga emotoka ya c-HCOOH na t-HCOOH. Ebintu by‘omubaro gw‘ensi yoona n‘enshonga z‘okutaho amataagi bikabarwa kurugiirira aha nteekateeka y‘embeera y‘okuhindura n‘omuringo gw‘ekibaro ky‘omukuru ahansi y‘embeera za ISM eza butoosha.
HCOOH neecwekyerezibwa ku erikukwatagana na HCO+ omu nkora ya gaasi kubaasa kuhanga isomers ishatu eza HC(OH)2+ cation. Kationi ezirikukirayo kumanywa nizibaasa kukwatagana n’ebindi bihingwa ebirikukirayo omu ISM, nka NH3, omu ntambwe ya kabiri kuhindura c-HCOOH na t-HCOOH. Enkora egi neeshoboorora oku c-HCOOH erikubaho omu bicu by’ebicweka by’omubiri ebirikwiragura. Okutwara enkora egi omu nkora, omubaro gwa c-HCOOH kugyeragyeranisa na t-HCOOH gukaba guri 25.7%.
Okushoboorora 6% ebyagambirweho eby’okureeberaho, nituteekateeka kuteekateeka aha nkora endiijo ey’okucwekyereza kation ya HCOOH. Enkora ya sequential acid-base (SAB) etebekanisiibwe omu murimo ogu neekwata aha nkora y‘okurahuka ey‘ebicweka by‘omubiri ebirikukira kubaho munonga omu ISM.
Nahabwekyo, HCOOH nebaasa kuraba omu mpinduka ei twateekateeka ahansi y’embeera z’ebicu by’omwirima. Egi n‘enkora nsya omu isomerism y‘ebicweka by‘omubiri ebiri omu ISM, erikubaasa kugyezaho kushoboorora enkoragana eri ahagati y‘ebicweka by‘omubiri ebiine amagara ebirikushangwa omu ISM.
John Garcia, Isascen Jimenez-Serra, Jose Carlos Kolchado, Germaine Morpeceres, Antonio Martinez-Henares, Victor M. Rivera, Laura Korzi, Yesu Martin-Painde
Eby’okureeberaho: Eby’obuhangwa bw’enyonyoozi (astro-ph.GA), Eby’obuhangwa bw’eby’obuhangwa (physical.chem-ph) Ebihandiikirwe nk’ebi: Okwamwenda 2023 11:45:25 UTC (1909 KB) Eby'obuhangwa bw'omu mwanya, eby'obuhangwa bw'omu mwanya
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