Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 13, Issue 46, Pages 20593-20601Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cp21942a
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The spatial magnetic properties (through space NMR shieldings-TSNMRS) of metal complexes (with ligands such as acetylacetone, 3-hydroxy-pyran(4) one) and metallobenzenes have been calculated by the GIAO perturbation method and visualized as Iso-Chemical-Shielding Surfaces (ICSS) of various sizes and directions. The TSNMRS values, thus obtained, can be successfully employed to quantify and visualize partial aromaticity of the metallocyclic ring by comparison with the spatial magnetic properties of the corresponding non-complexed ligands in comparable structural and electronic situations, and benzene, respectively. Because anisotropy/ring current effects in H-1 NMR spectra proved to be the molecular response property of TSNMRS, the results obtained concerning partial chelatoaromaticity are experimentally ensured.
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