Proton transfer or hemibonding? The structure and stability of radical cation clusters
The basin hopping search algorithm in conjunction with second-order Moller-Plesset perturbation theory is used to determine the lowest energy structures of the radical cation clusters (NH_3)_n^+, (H_2O)_n^+, (HF)_n^+, (PH_3)_n^+, (H_2S)_n^+ and (HCl)_n^+, where n=2-4. The energies of the most stable...
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| Format: | Article |
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Royal Society of Chemistry
2013
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| Online Access: | https://eprints.nottingham.ac.uk/29976/ |
| _version_ | 1848793895526203392 |
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| author | Do, Hainam Besley, Nicholas A. |
| author_facet | Do, Hainam Besley, Nicholas A. |
| author_sort | Do, Hainam |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The basin hopping search algorithm in conjunction with second-order Moller-Plesset perturbation theory is used to determine the lowest energy structures of the radical cation clusters (NH_3)_n^+, (H_2O)_n^+, (HF)_n^+, (PH_3)_n^+, (H_2S)_n^+ and (HCl)_n^+, where n=2-4. The energies of the most stable structures are subsequently evaluated using coupled cluster theory in conjunction with the aug-cc-pVTZ basis set. These cationic clusters can adopt two distinct structural types, with some clusters showing an unusual type of bonding, often referred to as hemibonding, while other clusters undergo proton transfer to give an ion and radical. It is found that proton transfer based structures are preferred by the (NH_3)_n+, (H_2O)_n^+, and (HF)_n^+ clusters while hemibonded structures are favoured by (PH_3)_n^+, (H_2S)_n^+ and (HCl)_n^+. These trends can be attributed to the relative strengths of the molecules and molecular cations as Brønsted bases and acids, respectively, and the strength of the interaction between the ion and radical in the ion-radical clusters. |
| first_indexed | 2025-11-14T19:07:34Z |
| format | Article |
| id | nottingham-29976 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:07:34Z |
| publishDate | 2013 |
| publisher | Royal Society of Chemistry |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-299762020-05-04T16:38:21Z https://eprints.nottingham.ac.uk/29976/ Proton transfer or hemibonding? The structure and stability of radical cation clusters Do, Hainam Besley, Nicholas A. The basin hopping search algorithm in conjunction with second-order Moller-Plesset perturbation theory is used to determine the lowest energy structures of the radical cation clusters (NH_3)_n^+, (H_2O)_n^+, (HF)_n^+, (PH_3)_n^+, (H_2S)_n^+ and (HCl)_n^+, where n=2-4. The energies of the most stable structures are subsequently evaluated using coupled cluster theory in conjunction with the aug-cc-pVTZ basis set. These cationic clusters can adopt two distinct structural types, with some clusters showing an unusual type of bonding, often referred to as hemibonding, while other clusters undergo proton transfer to give an ion and radical. It is found that proton transfer based structures are preferred by the (NH_3)_n+, (H_2O)_n^+, and (HF)_n^+ clusters while hemibonded structures are favoured by (PH_3)_n^+, (H_2S)_n^+ and (HCl)_n^+. These trends can be attributed to the relative strengths of the molecules and molecular cations as Brønsted bases and acids, respectively, and the strength of the interaction between the ion and radical in the ion-radical clusters. Royal Society of Chemistry 2013-08-22 Article PeerReviewed Do, Hainam and Besley, Nicholas A. (2013) Proton transfer or hemibonding? The structure and stability of radical cation clusters. Physical Chemistry Chemical Physics, 15 . pp. 16214-16219. ISSN 1463-9076 hemibonding proton transfer molecular clusters http://pubs.rsc.org/en/content/articlelanding/2013/cp/c3cp52922c#!divAbstract doi:10.1039/C3CP52922C doi:10.1039/C3CP52922C |
| spellingShingle | hemibonding proton transfer molecular clusters Do, Hainam Besley, Nicholas A. Proton transfer or hemibonding? The structure and stability of radical cation clusters |
| title | Proton transfer or hemibonding? The structure and stability of radical cation clusters |
| title_full | Proton transfer or hemibonding? The structure and stability of radical cation clusters |
| title_fullStr | Proton transfer or hemibonding? The structure and stability of radical cation clusters |
| title_full_unstemmed | Proton transfer or hemibonding? The structure and stability of radical cation clusters |
| title_short | Proton transfer or hemibonding? The structure and stability of radical cation clusters |
| title_sort | proton transfer or hemibonding? the structure and stability of radical cation clusters |
| topic | hemibonding proton transfer molecular clusters |
| url | https://eprints.nottingham.ac.uk/29976/ https://eprints.nottingham.ac.uk/29976/ https://eprints.nottingham.ac.uk/29976/ |