Report
On the Calculation of IR Spectra with a Fully Polarizable QM/MM Approach Based on Fluctuating Charges and Fluctuating Dipoles
| العنوان: | On the Calculation of IR Spectra with a Fully Polarizable QM/MM Approach Based on Fluctuating Charges and Fluctuating Dipoles |
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| المؤلفون: | Giovannini, Tommaso, Grazioli, Laura, Ambrosetti, Matteo, Cappelli, Chiara |
| المصدر: | J. Chem. Theory Comput. 2019, 15, 10, 5495-5507 |
| سنة النشر: | 2019 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Chemical Physics, Physics - Computational Physics |
| الوصف: | The fully polarizable QM/MM approach based on fluctuating charges and fluctuating dipoles, named QM/FQF{\mu} (J. Chem. Theory Comput. 2019, 15, 2233-2245), is extended to the evaluation of nuclear gradients and the calculation of IR spectra of molecular systems in condensed phase. To this end, analytical equations defining first and second energy derivatives with respect to nuclear coordinates are derived and discussed. The potentialities of the approach are shown by applying the model to the calculation of IR spectra of Methlyoxirane, Glycidol and Gallic Acid in aqueous solution. The results are compared with the continuum QM/PCM and the polarizable QM/FQ, which is based on Fluctuating Charges only. Comment: 42 pages, 11 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1021/acs.jctc.9b00574 |
| URL الوصول: | http://arxiv.org/abs/1906.03862 |
| رقم الانضمام: | edsarx.1906.03862 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1021/acs.jctc.9b00574 |
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