MULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREA
Metal solutions of sodium through cesium in the title amide and urea solvents have been examined by multielement NMR and ESR spectroscopy. Characteristic 23Na NMR spectra of the sodide anion in the solvents N,N-diethylacetamide, N,N-dipropylacetamide, and N,N-dimethylpropanamide are reported. Soluti...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
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1985
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| _version_ | 1826261049831063552 |
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| author | Holton, D Edwards, P Johnson, D Page, C Mcfarlane, W Wood, B |
| author_facet | Holton, D Edwards, P Johnson, D Page, C Mcfarlane, W Wood, B |
| author_sort | Holton, D |
| collection | OXFORD |
| description | Metal solutions of sodium through cesium in the title amide and urea solvents have been examined by multielement NMR and ESR spectroscopy. Characteristic 23Na NMR spectra of the sodide anion in the solvents N,N-diethylacetamide, N,N-dipropylacetamide, and N,N-dimethylpropanamide are reported. Solutions of the heavier alkali metals K through Cs in these three solvents showed no evidence of genuine alkalide ions. The corresponding ESR spectra of the liquid metal solutions show only a singlet resonance arising from a time-average of the signals from the solvated electron, es-, and the ion-pair species, Ms+es-. In contrast, metal solutions prepared at room temperature and then quenched in liquid nitrogen exhibit signals from both these species: a singlet due to the corresponding trapped electron and resolved hyperfine coupling to the alkali metal due to the presence of the electron-cation encounter species (Ms+es-) in these vitreous solids. Our NMR and ESR data are discussed in terms of the various chemical equilibria occurring in the metal solutions. Finally, we consider how these potential reducing species may be implicated both in dissolving metal reduction (DMR) reactions and also in the mode of decomposition of the metal solutions themselves. © 1985 American Chemical Society. |
| first_indexed | 2024-03-06T19:15:26Z |
| format | Journal article |
| id | oxford-uuid:182ff059-91ea-418e-9651-e68359e55ec1 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T19:15:26Z |
| publishDate | 1985 |
| record_format | dspace |
| spelling | oxford-uuid:182ff059-91ea-418e-9651-e68359e55ec12022-03-26T10:41:59ZMULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREAJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:182ff059-91ea-418e-9651-e68359e55ec1EnglishSymplectic Elements at Oxford1985Holton, DEdwards, PJohnson, DPage, CMcfarlane, WWood, BMetal solutions of sodium through cesium in the title amide and urea solvents have been examined by multielement NMR and ESR spectroscopy. Characteristic 23Na NMR spectra of the sodide anion in the solvents N,N-diethylacetamide, N,N-dipropylacetamide, and N,N-dimethylpropanamide are reported. Solutions of the heavier alkali metals K through Cs in these three solvents showed no evidence of genuine alkalide ions. The corresponding ESR spectra of the liquid metal solutions show only a singlet resonance arising from a time-average of the signals from the solvated electron, es-, and the ion-pair species, Ms+es-. In contrast, metal solutions prepared at room temperature and then quenched in liquid nitrogen exhibit signals from both these species: a singlet due to the corresponding trapped electron and resolved hyperfine coupling to the alkali metal due to the presence of the electron-cation encounter species (Ms+es-) in these vitreous solids. Our NMR and ESR data are discussed in terms of the various chemical equilibria occurring in the metal solutions. Finally, we consider how these potential reducing species may be implicated both in dissolving metal reduction (DMR) reactions and also in the mode of decomposition of the metal solutions themselves. © 1985 American Chemical Society. |
| spellingShingle | Holton, D Edwards, P Johnson, D Page, C Mcfarlane, W Wood, B MULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREA |
| title | MULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREA |
| title_full | MULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREA |
| title_fullStr | MULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREA |
| title_full_unstemmed | MULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREA |
| title_short | MULTIELEMENT NMR AND ELECTRON-SPIN-RESONANCE STUDY OF SOLUTIONS OF THE ALKALI-METALS NA TO CS IN N,N-DIETHYLACETAMIDE, N,N-DIPROPYLACETAMIDE, N,N-DIMETHYLPROPANAMIDE, AND TETRAMETHYLUREA |
| title_sort | multielement nmr and electron spin resonance study of solutions of the alkali metals na to cs in n n diethylacetamide n n dipropylacetamide n n dimethylpropanamide and tetramethylurea |
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