Dear All,<br><br>I am having some problems with nmr calculations using cp2k.<br>I am using a 2009-02-11 compilation.<br><br>I am trying to calculate chemical shifts and I started with the silicate monomer (Si(OH)4).<br>The following shielding values was obtained<br>
<br>Monomer: ISOTROPY = 385.1320 ANISOTROPY = 35.3885<br>TMS: ISOTROPY = 350.0942 ANISOTROPY = 0.6521<br><br>The value for TMS is close to what I obtain using other software but for the monomeric specie,<br>
its way off. Does anyone know what might be the cause of this ?<br><br>My input files are attached.<br><br>Thanks.<br><br>Lekpa.