{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T01:22:57Z","timestamp":1760145777742,"version":"build-2065373602"},"reference-count":69,"publisher":"MDPI AG","issue":"17","license":[{"start":{"date-parts":[[2024,8,30]],"date-time":"2024-08-30T00:00:00Z","timestamp":1724976000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Portuguese National Funding Agency (FCT)","award":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"],"award-info":[{"award-number":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"]}]},{"name":"Portuguese National Funding Agency (FCT)","award":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"],"award-info":[{"award-number":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"]}]},{"name":"Radiation Biology and Biophysics Doctoral Training Programme RaBBiT","award":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"],"award-info":[{"award-number":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"]}]},{"name":"Spanish Ministerio de Ciencia e Innovaci\u00f3n Project","award":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"],"award-info":[{"award-number":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"]}]},{"name":"Researchers Supporting Project","award":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"],"award-info":[{"award-number":["PD\/BD\/142831\/2018","COVID\/BD\/152673\/2022","Radiation Biology and Biophysics Doctoral Training Programme RaBBiT, PD\/00193\/2012","PD\/00193\/2012","CEFITEC UIDB\/00068\/2020","PID2019-104727RB-C21","RSPD2024R808"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>In the present work, we report an update and extension of the previous ion-pair formation study of Hubers, M.M.; Los, J. Chem. Phys.\u00a01975, 10, 235\u2013259, noting new fragment anions from time-of-flight mass spectrometry. The branching ratios obtained from the negative ions formed in K + SF6 collisions, in a wide energy range from 10.7 up to 213.1 eV in the centre-of-mass frame, show that the main anion is assigned to SF5\u2212 and contributing to more than 70% of the total ion yield, followed by the non-dissociated parent anion SF6\u2212 and F\u2212. Other less intense anions amounting to &lt;20% are assigned to SF3\u2212 and F2\u2212, while a trace contribution at 32u is tentatively assigned to S\u2212 formation, although the rather complex intramolecular energy redistribution within the temporary negative ion is formed during the collision. An energy loss spectrum of potassium cation post-collision is recorded showing features that have been assigned with the help of theoretical calculations. Quantum chemical calculations for the lowest-lying unoccupied molecular orbitals in the presence of a potassium atom are performed to support the experimental findings. Apart from the role of the different resonances participating in the formation of different anions, the role of higher-lying electronic-excited states of Rydberg character are noted.<\/jats:p>","DOI":"10.3390\/molecules29174118","type":"journal-article","created":{"date-parts":[[2024,8,30]],"date-time":"2024-08-30T07:45:47Z","timestamp":1725003947000},"page":"4118","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["SF6 Negative Ion Formation in Charge Transfer Experiments"],"prefix":"10.3390","volume":"29","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1996-9925","authenticated-orcid":false,"given":"Sarvesh","family":"Kumar","sequence":"first","affiliation":[{"name":"Atomic and Molecular Collisions Laboratory, CEFITEC-Centre of Physics and Technological Research, Department of Physics, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"},{"name":"Chemical Sciences Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USA"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8874-8790","authenticated-orcid":false,"given":"Masamitsu","family":"Hoshino","sequence":"additional","affiliation":[{"name":"Department of Materials and Life Sciences, Sophia University, Tokyo 102-8554, Japan"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5762-5058","authenticated-orcid":false,"given":"Bouthe\u00efna","family":"Kerkeni","sequence":"additional","affiliation":[{"name":"ISAMM, Universit\u00e9 de la Manouba, La Manouba 2010, Tunisia"},{"name":"D\u00e9partement de Physique, LPMC, Facult\u00e9 des Sciences de Tunis, Universit\u00e9 de Tunis el Manar, Tunis 2092, Tunisia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4033-4518","authenticated-orcid":false,"given":"Gustavo","family":"Garc\u00eda","sequence":"additional","affiliation":[{"name":"Instituto de F\u00edsica Fundamental, Consejo Superior de Investigaciones Cient\u00edficas (CSIC), Serrano 113-bis, 28006 Madrid, Spain"}]},{"given":"Ghofrane","family":"Ouerfelli","sequence":"additional","affiliation":[{"name":"Department of Physics, College of Khurma University, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia"}]},{"given":"Muneerah Mogren","family":"Al-Mogren","sequence":"additional","affiliation":[{"name":"Department of Chemistry, College of Sciences, King Saud University, P.O. Box 2455, Ryiadh 11451, Saudi Arabia"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2696-1152","authenticated-orcid":false,"given":"Paulo","family":"Lim\u00e3o-Vieira","sequence":"additional","affiliation":[{"name":"Atomic and Molecular Collisions Laboratory, CEFITEC-Centre of Physics and Technological Research, Department of Physics, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,8,30]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"194","DOI":"10.1126\/science.259.5092.194","article-title":"Atmospheric Lifetimes of Long-Lived Halogenated Species","volume":"259","author":"Ravishankara","year":"1993","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1287","DOI":"10.1029\/94JD02399","article-title":"Effects of Electron and Ion Reactions on Atmospheric Lifetimes of Fully Fluorinated Compounds","volume":"100","author":"Morris","year":"1995","journal-title":"J. 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