Nuclear overhauser effect and scalar coupling relaxation

The density-matrix equations, as formulated by N. R. Krishna and S. L. Gordon (J. Chem. Phys. 58, 5687 (1973)) for a binary solution are considered, taking into account intermolecular scalar coupling of the first kind as the main relaxation process. The enhancement factor for the intermolecular Over...

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Autor principal: Balonga, P.E.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00222364_v59_n1_p50_Balonga
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00222364_v59_n1_p50_Balonga2023-10-03T14:28:46Z Nuclear overhauser effect and scalar coupling relaxation Balonga, P.E. The density-matrix equations, as formulated by N. R. Krishna and S. L. Gordon (J. Chem. Phys. 58, 5687 (1973)) for a binary solution are considered, taking into account intermolecular scalar coupling of the first kind as the main relaxation process. The enhancement factor for the intermolecular Overhauser effect is obtained using the nonviscous liquid approximation. This factor results in the opposite sign to that obtained when the only relaxation mechanism considered is the intermolecular dipole-dipole interaction even for strongly coupled spin systems. Since these two are the only interactions which are capable of showing any intermolecular Overhauser effect, this difference in sign obtained for the enhancement factor provides a unique possibility for determining which mechanism is prevailing in a given binary system. An intermolecular Overhauser experiment made by the INDOR procedure is considered. © 1984. Fil:Balonga, P.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00222364_v59_n1_p50_Balonga
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description The density-matrix equations, as formulated by N. R. Krishna and S. L. Gordon (J. Chem. Phys. 58, 5687 (1973)) for a binary solution are considered, taking into account intermolecular scalar coupling of the first kind as the main relaxation process. The enhancement factor for the intermolecular Overhauser effect is obtained using the nonviscous liquid approximation. This factor results in the opposite sign to that obtained when the only relaxation mechanism considered is the intermolecular dipole-dipole interaction even for strongly coupled spin systems. Since these two are the only interactions which are capable of showing any intermolecular Overhauser effect, this difference in sign obtained for the enhancement factor provides a unique possibility for determining which mechanism is prevailing in a given binary system. An intermolecular Overhauser experiment made by the INDOR procedure is considered. © 1984.
format JOUR
author Balonga, P.E.
spellingShingle Balonga, P.E.
Nuclear overhauser effect and scalar coupling relaxation
author_facet Balonga, P.E.
author_sort Balonga, P.E.
title Nuclear overhauser effect and scalar coupling relaxation
title_short Nuclear overhauser effect and scalar coupling relaxation
title_full Nuclear overhauser effect and scalar coupling relaxation
title_fullStr Nuclear overhauser effect and scalar coupling relaxation
title_full_unstemmed Nuclear overhauser effect and scalar coupling relaxation
title_sort nuclear overhauser effect and scalar coupling relaxation
url http://hdl.handle.net/20.500.12110/paper_00222364_v59_n1_p50_Balonga
work_keys_str_mv AT balongape nuclearoverhausereffectandscalarcouplingrelaxation
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