The solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopy
Detailed proton and 13C dynamic NMR and 2-D EXSY studies of tetramesityldiphosphane at a field of 11.8 T over the temperature range 193-313 K showed that rotations about the P-P bond and two types of P-Cipso bond are associated with three different barriers. This supports a gauche conformation of th...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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2000
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| _version_ | 1797098515108724736 |
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| author | McFarlane, W Rees, N Constanza, L Patel, M Colquhoun, I |
| author_facet | McFarlane, W Rees, N Constanza, L Patel, M Colquhoun, I |
| author_sort | McFarlane, W |
| collection | OXFORD |
| description | Detailed proton and 13C dynamic NMR and 2-D EXSY studies of tetramesityldiphosphane at a field of 11.8 T over the temperature range 193-313 K showed that rotations about the P-P bond and two types of P-Cipso bond are associated with three different barriers. This supports a gauche conformation of this molecule in solution at low temperature rather than Irans as found in the solid state, and is consistent with the pattern of coupling constants observed in the low temperature proton and I3C spectra. It can be attributed to favoured electron lone pair/lone pair interactions allied to a propeller twist of the mesityl groups which minimises their effective steric requirements. © The Royal Society of Chemistry 2000. |
| first_indexed | 2024-03-07T05:10:40Z |
| format | Journal article |
| id | oxford-uuid:db70010b-cf6f-4190-9fa7-40e72439ee12 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T05:10:40Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:db70010b-cf6f-4190-9fa7-40e72439ee122022-03-27T09:10:33ZThe solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:db70010b-cf6f-4190-9fa7-40e72439ee12EnglishSymplectic Elements at Oxford2000McFarlane, WRees, NConstanza, LPatel, MColquhoun, IDetailed proton and 13C dynamic NMR and 2-D EXSY studies of tetramesityldiphosphane at a field of 11.8 T over the temperature range 193-313 K showed that rotations about the P-P bond and two types of P-Cipso bond are associated with three different barriers. This supports a gauche conformation of this molecule in solution at low temperature rather than Irans as found in the solid state, and is consistent with the pattern of coupling constants observed in the low temperature proton and I3C spectra. It can be attributed to favoured electron lone pair/lone pair interactions allied to a propeller twist of the mesityl groups which minimises their effective steric requirements. © The Royal Society of Chemistry 2000. |
| spellingShingle | McFarlane, W Rees, N Constanza, L Patel, M Colquhoun, I The solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopy |
| title | The solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopy |
| title_full | The solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopy |
| title_fullStr | The solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopy |
| title_full_unstemmed | The solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopy |
| title_short | The solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2-D NMR spectroscopy |
| title_sort | solution conformation and rotational dynamics of tetramesityldiphosphane studied by 2 d nmr spectroscopy |
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