Modeling NMR chemical shifts: Crystal potential derived point charge (CPPCh) model to calculate solid state effects on 31 P chemical shifts tensors
This paper presents a new method to calculate solid-state effects on NMR chemical shifts. Using full crystal potentials, this new method (CPPCh) eliminates the need to arbitrarily select the point charges that are included in the calculations of the NMR chemical shieldings to take into account inter...
Guardado en:
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2000
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14220067_v1_n4_p75_Schneider http://hdl.handle.net/20.500.12110/paper_14220067_v1_n4_p75_Schneider |
| Aporte de: |
| Sumario: | This paper presents a new method to calculate solid-state effects on NMR chemical shifts. Using full crystal potentials, this new method (CPPCh) eliminates the need to arbitrarily select the point charges that are included in the calculations of the NMR chemical shieldings to take into account intermolecular effects. By eliminating the arbitrary selection of the point charges, the method provides a mechanism to systematically improve the simulation of intermolecular effects on chemical shielding calculations. This new method has been applied to the calculation of the 31 P NMR chemical shifts tensors in P 4 S 3 . The shielding calculations were done using the DFT approach with the BLYP gradient corrected exchange correlation functional. This method was selected to calculate the 31 P chemical shifts because it includes electron correlation effects at a reasonable cost. |
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