The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique

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The long-range spin-spin coupling constants between the methyl and the ring protons in several methyl pyridines have been determined, with their signs. The INDOR technique was used for this purpose and a systematic method was developed applicable to these spin systems, which were all of the ABCX3 ty...

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Autores principales: Kowalewski, V.J., Contreras, R.H.
Formato: JOUR
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00222364_v8_n1_p101_Kowalewski
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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_v8_n1_p101_Kowalewski2023-10-03T14:28:47Z The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique Kowalewski, V.J. Contreras, R.H. The long-range spin-spin coupling constants between the methyl and the ring protons in several methyl pyridines have been determined, with their signs. The INDOR technique was used for this purpose and a systematic method was developed applicable to these spin systems, which were all of the ABCX3 type. It was found that 6JH,CH3 and4JH,CH3 are negative, while 5JH,CH3 is positive, with |4J|>|6J|>|5J|. These results show the same trend as shown by investigations of previous authors in other cyclic compounds. © 1972. Fil:Kowalewski, V.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Contreras, R.H. 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_v8_n1_p101_Kowalewski
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 long-range spin-spin coupling constants between the methyl and the ring protons in several methyl pyridines have been determined, with their signs. The INDOR technique was used for this purpose and a systematic method was developed applicable to these spin systems, which were all of the ABCX3 type. It was found that 6JH,CH3 and4JH,CH3 are negative, while 5JH,CH3 is positive, with |4J|>|6J|>|5J|. These results show the same trend as shown by investigations of previous authors in other cyclic compounds. © 1972.
format JOUR
author Kowalewski, V.J.
Contreras, R.H.
spellingShingle Kowalewski, V.J.
Contreras, R.H.
The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique
author_facet Kowalewski, V.J.
Contreras, R.H.
author_sort Kowalewski, V.J.
title The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique
title_short The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique
title_full The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique
title_fullStr The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique
title_full_unstemmed The signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the INDOR technique
title_sort signs of the long-range spin-spin coupling constants in methyl pyridines as determined by the indor technique
url http://hdl.handle.net/20.500.12110/paper_00222364_v8_n1_p101_Kowalewski
work_keys_str_mv AT kowalewskivj thesignsofthelongrangespinspincouplingconstantsinmethylpyridinesasdeterminedbytheindortechnique
AT contrerasrh thesignsofthelongrangespinspincouplingconstantsinmethylpyridinesasdeterminedbytheindortechnique
AT kowalewskivj signsofthelongrangespinspincouplingconstantsinmethylpyridinesasdeterminedbytheindortechnique
AT contrerasrh signsofthelongrangespinspincouplingconstantsinmethylpyridinesasdeterminedbytheindortechnique
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