The Source Function (SF) atomic contributions were evaluated at bond critical points (bcps) for three test systems, using theoretical electron densities and multipole modelled densities derived from the former projected into structure factors. In general, the SF percentage atomic contributions obtained from the multipole modelled density agree well with those calculated from the corresponding primary density, despite large discrepancies in the electron density and, particularly, in the density Laplacian values occur at bcps. The SF percentage contributions represent a more robust chemical bond descriptor than are other commonly used bond topological indices which are too sensitive to the multipole model bias.
Using the Source Function descriptor to dampen the multipole model bias in charge density studies from X-ray structure factors refinements
Gatti Carlo
2009
Abstract
The Source Function (SF) atomic contributions were evaluated at bond critical points (bcps) for three test systems, using theoretical electron densities and multipole modelled densities derived from the former projected into structure factors. In general, the SF percentage atomic contributions obtained from the multipole modelled density agree well with those calculated from the corresponding primary density, despite large discrepancies in the electron density and, particularly, in the density Laplacian values occur at bcps. The SF percentage contributions represent a more robust chemical bond descriptor than are other commonly used bond topological indices which are too sensitive to the multipole model bias.File | Dimensione | Formato | |
---|---|---|---|
prod_48294-doc_14499.pdf
solo utenti autorizzati
Descrizione: Using the Source Function descriptor to dampen the multipole model bias in charge density studies from X-ray structure factors refinements
Dimensione
833.02 kB
Formato
Adobe PDF
|
833.02 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.