A study of the distribution of boron sites in glassy B2O3 using 11B NMR
| Autor: | H.M Kriz, Philip J. Bray |
|---|---|
| Rok vydání: | 1971 |
| Předmět: |
Deuterium NMR
Carbon-13 NMR satellite Analytical chemistry chemistry.chemical_element Nuclear magnetic resonance spectroscopy Carbon-13 NMR Condensed Matter Physics Electronic Optical and Magnetic Materials NMR spectra database chemistry Materials Chemistry Ceramics and Composites Transverse relaxation-optimized spectroscopy Boron Electric field gradient |
| Zdroj: | Journal of Non-Crystalline Solids. 6:27-36 |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/0022-3093(71)90013-5 |
| Popis: | A study has been made of the 11 B NMR spectrum of glassy B 2 O 3 with the aid of computer-simulated NMR spectra. It is shown that the glass contains a distribution of boron sites centered on an average or most probable site characterized by a quadrupole coupling constant of 2.66 MHz and an electric field gradient asymmetry parameter of 0.11. It is concluded that 11 B NMR alone cannot determine the exact nature of the distribution. The implications of the NMR data with respect to the suggested existence in the glass of distorted BO 4 “tetrahedra” is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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