Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate
We have studied sodium enneagermanate crystal using both magic angle spinning (MAS) and double rotation (DOR) at two magnetic field strengths. Using equation for the total shift observed at two field strengths, the chemical shift is uniquely determined together with a product of the quadrupolar coup...
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| Format: | Article |
| Language: | English |
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Penerbit UTM Press
2002
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| Online Access: | http://eprints.utm.my/1344/1/JT36C1.pdf |
| _version_ | 1825909052793683968 |
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| author | Hussin, R. Dupree, R. Samoson, A. Bull, L. M. |
| author_facet | Hussin, R. Dupree, R. Samoson, A. Bull, L. M. |
| author_sort | Hussin, R. |
| collection | ePrints |
| description | We have studied sodium enneagermanate crystal using both magic angle spinning (MAS) and double rotation (DOR) at two magnetic field strengths. Using equation for the total shift observed at two field strengths, the chemical shift is uniquely determined together with a product of the quadrupolar coupling constant (CQ = e2qQ/h) and the quadrupolar asymmetry parameter (ç). We demonstrate a computer simulation that uses the isotropic shifts and quadrupolar products as constraints and provides simulations of overlapped magic-angle spinning line shapes. In this way the quadrupolar parameters, CQ and ç, are determined separately for each crystallographic site of crystalline sodium enneagermanate. High resolution DOR spectra of oxygen-17 nuclei in sodium enneagermanate crystal illustrate the experimental capabilities. Crystalline studies of sodium enneagermanate is one of the structural data for confirming the correlations between the measured 17O quadrupolar coupling parameters and the oxygen environment. The result of these studies should provide insight to further investigation using 17O solid state NMR to study the structure of other oxide glasses and as well as other germanate-based glasses. |
| first_indexed | 2024-03-05T17:56:24Z |
| format | Article |
| id | utm.eprints-1344 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T17:56:24Z |
| publishDate | 2002 |
| publisher | Penerbit UTM Press |
| record_format | dspace |
| spelling | utm.eprints-13442017-11-01T04:17:44Z http://eprints.utm.my/1344/ Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate Hussin, R. Dupree, R. Samoson, A. Bull, L. M. QC Physics We have studied sodium enneagermanate crystal using both magic angle spinning (MAS) and double rotation (DOR) at two magnetic field strengths. Using equation for the total shift observed at two field strengths, the chemical shift is uniquely determined together with a product of the quadrupolar coupling constant (CQ = e2qQ/h) and the quadrupolar asymmetry parameter (ç). We demonstrate a computer simulation that uses the isotropic shifts and quadrupolar products as constraints and provides simulations of overlapped magic-angle spinning line shapes. In this way the quadrupolar parameters, CQ and ç, are determined separately for each crystallographic site of crystalline sodium enneagermanate. High resolution DOR spectra of oxygen-17 nuclei in sodium enneagermanate crystal illustrate the experimental capabilities. Crystalline studies of sodium enneagermanate is one of the structural data for confirming the correlations between the measured 17O quadrupolar coupling parameters and the oxygen environment. The result of these studies should provide insight to further investigation using 17O solid state NMR to study the structure of other oxide glasses and as well as other germanate-based glasses. Penerbit UTM Press 2002-06 Article PeerReviewed application/pdf en http://eprints.utm.my/1344/1/JT36C1.pdf Hussin, R. and Dupree, R. and Samoson, A. and Bull, L. M. (2002) Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate. Jurnal Teknologi C (36C). pp. 1-12. ISSN 0127-9696 http://www.penerbit.utm.my/onlinejournal/36/C/JT36C1.pdf |
| spellingShingle | QC Physics Hussin, R. Dupree, R. Samoson, A. Bull, L. M. Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate |
| title | Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate |
| title_full | Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate |
| title_fullStr | Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate |
| title_full_unstemmed | Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate |
| title_short | Experimental Capability Of High Resolution O17 Using Double Rotation On Crystalline Sodium Enneagermanate |
| title_sort | experimental capability of high resolution o17 using double rotation on crystalline sodium enneagermanate |
| topic | QC Physics |
| url | http://eprints.utm.my/1344/1/JT36C1.pdf |
| work_keys_str_mv | AT hussinr experimentalcapabilityofhighresolutiono17usingdoublerotationoncrystallinesodiumenneagermanate AT dupreer experimentalcapabilityofhighresolutiono17usingdoublerotationoncrystallinesodiumenneagermanate AT samosona experimentalcapabilityofhighresolutiono17usingdoublerotationoncrystallinesodiumenneagermanate AT bulllm experimentalcapabilityofhighresolutiono17usingdoublerotationoncrystallinesodiumenneagermanate |