naa a22 4500 510734448 CHVBK 20180411083004.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12039-013-0464-0 doi (NATIONALLICENCE)springer-10.1007/s12039-013-0464-0 Ab initio study on the paths of oxygen abstraction of hydrogen trioxide (HO3) molecule in the HO3 + SO2 reaction [Elektronische Daten] [R BAGHERZADEH, SATTAR EBRAHIMI, MOEIN GOODARZI] The reaction paths of hydrogen trioxide (HO3) with sulphur dioxide (SO2) have been investigated on the doublet potential energy surface, theoretically. All species of the title reaction have been optimized at the PMP2(FC)/cc-pVDZ computational level. Energetic data have been obtained at the CCSD(T)//PMP2 level employing the cc-pVDZ basis set. No stable collision complexes have been found between the SO2 and HO3 molecules. Therefore, the SO2 + HO3 reaction starts without initial associations. The four possible paths, P1 through P4, have been obtained for the formation of SO3 (D $_{3\text{h}}$ ) + HOO∙ product. Our results show that these four paths include relatively high energy barriers to produce the final product of the SO3 (D $_{3\text{h}}$ ) + HOO∙. Therefore, the SO2 + HO3 → SO3(D $_{3\text{h}}$ ) + HOO∙ reaction is difficult to perform under atmospheric conditions. This means that the importance of SO2 + HO3 → SO3 (D $_{3\text{h}}$ ) + HOO∙ reaction increases with increasing temperature and, this reaction plays an important role in the SO3(D $_{3\text{h}}$ ) production as the main molecule of the formation of acid rain at high temperatures. Graphical Abstract Details of the reaction paths of SO2 + HO3 → SO3(D3h) + HOO have been investigated theoretically. All paths of the reaction are difficult to perform under atmospheric conditions. This reaction plays an important role in the SO3 (D3h) production as a main factor of acid rain formation in high temperatures. Indian Academy of Sciences, 2013 Ab initio calculations nationallicence atmospheric chemistry nationallicence hydrogen trioxide nationallicence acid rain nationallicence BAGHERZADEH R. Department of Engineering, Aliabad Katoul Branch, Islamic Azad University, Golestan, Aliabad Katoul, Iran aut EBRAHIMI SATTAR Department of Chemistry, Malayer Branch, Islamic Azad University, Malayer, Iran aut GOODARZI MOEIN Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran aut Journal of Chemical Sciences Springer India 125/4(2013-07-01), 927-932 0974-3626 125:4<927 2013 125 12039 https://doi.org/10.1007/s12039-013-0464-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12039-013-0464-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- BAGHERZADEH R. Department of Engineering, Aliabad Katoul Branch, Islamic Azad University, Golestan, Aliabad Katoul, Iran aut NATIONALLICENCE 700 1- EBRAHIMI SATTAR Department of Chemistry, Malayer Branch, Islamic Azad University, Malayer, Iran aut NATIONALLICENCE 700 1- GOODARZI MOEIN Department of Chemistry, Institute for Advanced Studies in Basic Sciences (IASBS), Zanjan, Iran aut NATIONALLICENCE 773 0- Journal of Chemical Sciences Springer India 125/4(2013-07-01), 927-932 0974-3626 125:4<927 2013 125 12039 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer