Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance
The water-endofullerene H2O@C60 provides a unique chemical system in which freely rotating water molecules are confined inside homogeneous and symmetrical carbon cages. The spin conversion between the ortho and para species of the endohedral H2O was studied in the solid phase by low-temperature nucl...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
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American Institute of Physics
2014
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| Online Access: | https://eprints.nottingham.ac.uk/3278/ |
| _version_ | 1848790991990947840 |
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| author | Mamone, Salvatore Concistre, Maria Carignani, Elisa Meier, Benno Krachmalnicoff, Andrea Johannessen, Ole G. Lei, Xuegong Li, Yongjun Denning, Mark Carravetta, Marina Goh, Kelvin Horsewill, Anthony J. Whitby, Richard J. Levitt, Malcolm H. |
| author_facet | Mamone, Salvatore Concistre, Maria Carignani, Elisa Meier, Benno Krachmalnicoff, Andrea Johannessen, Ole G. Lei, Xuegong Li, Yongjun Denning, Mark Carravetta, Marina Goh, Kelvin Horsewill, Anthony J. Whitby, Richard J. Levitt, Malcolm H. |
| author_sort | Mamone, Salvatore |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The water-endofullerene H2O@C60 provides a unique chemical system in which freely rotating water molecules are confined inside homogeneous and symmetrical carbon cages. The spin conversion between the ortho and para species of the endohedral H2O was studied in the solid phase by low-temperature nuclear magnetic resonance. The experimental data are consistent with a second-order kinetics, indicating a bimolecular spin conversion process. Numerical simulations suggest the simultaneous presence of a spin di↵usion process allowing neighbouring ortho and para molecules to exchange their angular momenta. Cross-polarization experiments found no evidence that the spin conversion of the endohedral H2O molecules is catalysed by 13C nuclei present in the cages. |
| first_indexed | 2025-11-14T18:21:25Z |
| format | Article |
| id | nottingham-3278 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:21:25Z |
| publishDate | 2014 |
| publisher | American Institute of Physics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-32782020-05-04T16:47:44Z https://eprints.nottingham.ac.uk/3278/ Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance Mamone, Salvatore Concistre, Maria Carignani, Elisa Meier, Benno Krachmalnicoff, Andrea Johannessen, Ole G. Lei, Xuegong Li, Yongjun Denning, Mark Carravetta, Marina Goh, Kelvin Horsewill, Anthony J. Whitby, Richard J. Levitt, Malcolm H. The water-endofullerene H2O@C60 provides a unique chemical system in which freely rotating water molecules are confined inside homogeneous and symmetrical carbon cages. The spin conversion between the ortho and para species of the endohedral H2O was studied in the solid phase by low-temperature nuclear magnetic resonance. The experimental data are consistent with a second-order kinetics, indicating a bimolecular spin conversion process. Numerical simulations suggest the simultaneous presence of a spin di↵usion process allowing neighbouring ortho and para molecules to exchange their angular momenta. Cross-polarization experiments found no evidence that the spin conversion of the endohedral H2O molecules is catalysed by 13C nuclei present in the cages. American Institute of Physics 2014-05-21 Article PeerReviewed Mamone, Salvatore, Concistre, Maria, Carignani, Elisa, Meier, Benno, Krachmalnicoff, Andrea, Johannessen, Ole G., Lei, Xuegong, Li, Yongjun, Denning, Mark, Carravetta, Marina, Goh, Kelvin, Horsewill, Anthony J., Whitby, Richard J. and Levitt, Malcolm H. (2014) Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance. Journal of Chemical Physics, 140 (19). p. 194306. ISSN 0021-9606 http://scitation.aip.org/content/aip/journal/jcp/140/19/10.1063/1.4873343 doi:10.1063/1.4873343 doi:10.1063/1.4873343 |
| spellingShingle | Mamone, Salvatore Concistre, Maria Carignani, Elisa Meier, Benno Krachmalnicoff, Andrea Johannessen, Ole G. Lei, Xuegong Li, Yongjun Denning, Mark Carravetta, Marina Goh, Kelvin Horsewill, Anthony J. Whitby, Richard J. Levitt, Malcolm H. Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance |
| title | Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance |
| title_full | Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance |
| title_fullStr | Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance |
| title_full_unstemmed | Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance |
| title_short | Nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance |
| title_sort | nuclear spin conversion of water inside fullerene cages detected by low-temperature nuclear magnetic resonance |
| url | https://eprints.nottingham.ac.uk/3278/ https://eprints.nottingham.ac.uk/3278/ https://eprints.nottingham.ac.uk/3278/ |