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Updated: Jul 2, 2026

1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions
Published on: October 10, 2016
Magnetic euripi in corannulene
Guglielmo Monaco1, Lawrence T Scott, Riccardo Zanasi
1Dipartimento di Chimica, Università degli Studi di Salerno, via Ponte don Melillo, 84084 Fisciano (SA), Italy.
Corannulene ions exhibit significant pi-ring currents that change with oxidation state, displaying all possible rim and hub circulation patterns. This study reveals unique electronic behaviors and magnetic properties of these aromatic systems.
Area of Science:
- * Theoretical Chemistry
- * Computational Chemistry
- * Materials Science
Background:
- * Corannulene and its derivatives are polycyclic aromatic hydrocarbons with unique electronic properties.
- * Understanding the magnetic response of these systems is crucial for designing novel materials.
- * Previous studies have explored neutral corannulene, but a comprehensive analysis of its ionic states is lacking.
Purpose of the Study:
- * To compute ab initio current densities for corannulene dianion, dication, and tetraanion under an external magnetic field.
- * To analyze the orbital contributions and their relation to observed circulation patterns.
- * To investigate the electronic structure and magnetic properties of corannulene ions, including their response to oxidation state changes.
Main Methods:
- * Ab initio computation of current densities induced by an external magnetic field.
- * Analysis of orbital contributions, including virtual excitations.
- * Calculation of magnetic properties and comparison with experimental NMR chemical shifts.
Main Results:
- * Corannulene ions display large pi-ring currents, varying significantly with oxidation state and exhibiting all possible rim and hub circulation patterns.
- * The dianion and dication show unique electronic behaviors driven by specific highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) transitions.
- * Computed magnetic properties show good agreement with experimental data, predicting a paramagnetic nature for the dianion.
Conclusions:
- * Corannulene ions represent a unique class of aromatic systems with tunable electronic and magnetic properties.
- * The interplay between oxidation state and electronic structure dictates the observed circulation patterns.
- * Theoretical predictions align well with experimental observations, validating the computational approach for studying these complex molecules.
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