Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 237, Issue -, Pages 295-303Publisher
ELSEVIER
DOI: 10.1016/j.molliq.2017.04.108
Keywords
Electronic transitions; Nuclear magnetic resonance; S-MC/QM; TD-DFT; GIAO-NMR
Funding
- CNPq
- CAPES
- FAPEG
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We investigate the behavior of the spectroscopic properties of (alpha-)beta-glucose and maltose in water solution using the S-MC/QM method. TD-CAM-B3LYP/6-311++G(2d,2p) and TD-B3LYP/6-311++G(2d,2p) electronic transitions show strong dependence with the solute polarization in water, indicating a blue shift of the lambda(water) in comparison with lambda(gas-phase) results. The NMR spectroscopy shows that the inclusion of the polarization effect and solvent medium - treated as point charge - is essential for a more appropriate description of the variation of the magnetic signature of oxygen atoms. Our results show variations up to 16 ppm on the solvent shift for sigma(O-17) values with CAM-B3LYP functional. (C) 2017 Elsevier B.V. All rights reserved.
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