Magnetic response properties of gaudiene - a cavernous and aromatic carbocage

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http://hdl.handle.net/10138/224396

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Rauhalahti , M , Munoz-Castro , A & Sundholm , D 2016 , ' Magnetic response properties of gaudiene - a cavernous and aromatic carbocage ' , Physical Chemistry Chemical Physics , vol. 18 , no. 28 , pp. 18880-18886 . https://doi.org/10.1039/c6cp03808e

Title: Magnetic response properties of gaudiene - a cavernous and aromatic carbocage
Author: Rauhalahti, M.; Munoz-Castro, A.; Sundholm, D.
Contributor: University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
Date: 2016-07-28
Language: eng
Number of pages: 7
Belongs to series: Physical Chemistry Chemical Physics
ISSN: 1463-9076
URI: http://hdl.handle.net/10138/224396
Abstract: spherical and cavernous carbocage molecule exhibiting faces with larger ring sizes than regular fullerenes is a suitable species for investigating how molecular magnetic properties depend on the structure of the molecular framework. The studied all-carbon gaudiene (C-72) is a highly symmetrical molecule with three-and four-fold faces formed by twelve membered rings. Here, we attempt to unravel the magnetic response properties of C-72 by performing magnetic shielding and current density calculations with the external magnetic field applied in different directions. The obtained results indicate that the induced current density flows mainly along the chemical bonds that are largely perpendicular to the magnetic field direction. However, the overall current strength for different directions of the magnetic field is nearly isotropic differing by only 10% indicating that C-72 can to some extent be considered to be a spherical aromatic molecule, whose current density and magnetic shielding are ideally completely isotropic. The induced magnetic field is found to exhibit long-range shielding cones in the field direction with a small deshielding region located perpendicularly to the field outside the molecule. The magnetic shielding is isotropic inside the molecular framework of C-72, whereas an orientation-dependent magnetic response appears mainly at the exterior of the molecular cage.
Subject: INCLUDING ATOMIC ORBITALS
ZETA VALENCE QUALITY
SPHERICAL AROMATICITY
BASIS-SETS
HOLLOW CARBON
FULLERENES
C-60
APPROXIMATION
BEHAVIOR
FIELD
116 Chemical sciences
114 Physical sciences
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