Carbon-13 chemical shift tensors of disaccharides: measurement, computation and assignment |
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Authors: | Shao Limin Yates Jonathan R Titman Jeremy J |
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Institution: | School of Chemistry, University of Nottingham, University Park, Nottingham, NG7 2RD, UK. |
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Abstract: | A recently developed chemical shift anisotropy amplification solid-state nuclear magnetic resonance (NMR) experiment is applied to the measurement of the chemical shift tensors in three disaccharides: sucrose, maltose, and trehalose. The measured tensor principal values are compared with those calculated from first principles using density functional theory within the planewave-pseudopotential approach. In addition, a method of assigning poorly dispersed NMR spectra, based on comparing experimental and calculated shift anisotropies as well as isotropic shifts, is demonstrated. |
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