Related Experiment Video
Updated: Oct 9, 2025

Computation of Atmospheric Concentrations of Molecular Clusters from ab initio Thermochemistry
Published on: April 8, 2020
Comparing GIPAW with numerically exact chemical shieldings: The role of two-center contributions to the induced
Gilles A de Wijs1, Georg Kresse2, Remco W A Havenith3
1Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, NL-6525 AJ Nijmegen, The Netherlands.
Abstract:
In this study, we benchmark density functional theory gauge-including projector-augmented-wave (GIPAW) chemical shieldings against molecular shieldings for which basis set completeness has been achieved [Jensen et al., Phys. Chem. Chem. Phys. 18, 21145 (2016)]. We demonstrate the importance of two-center corrections for GIPAW hydrogen shieldings. For the other nuclei studied, standard GIPAW is sufficiently accurate. We find that GIPAW can be pushed to closely approach the basis set limit. The only source of small inaccuracies lies in the contribution to the shielding that is caused by surface currents, which we estimate comparing GIPAW susceptibilities to converged molecular magnetizabilities.
Related Concept Videos
Diamagnetic Shielding of Nuclei: Local Diamagnetic Current
π Electron Effects on Chemical Shift: Overview
Gauss's Law: Problem-Solving
Inductive Effects on Chemical Shift: Overview
Magnetic Field Due to Two Straight Wires
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

