Abstract
Magnetic criteria of aromaticity have been analyzed which are currently the most popular methods, considering the circular delocalization of electrons as the genesis of aromaticity. The concept of aromaticity as was visualized by Kekulé to the latest development in the field has been discussed. The other criteria for defining aromaticity such as the chemical behavior, the structural behavior and the energetic criteria are briefly defined keeping the main focus on the magnetic criteria. The various magnetic measures for defining aromaticity such as NMR chemical shifts which include 1H NMR shifts as well as Li+ NMR chemical shifts, Magnetic Susceptibility Anisotropy, Current Density Analysis Plots (CDA) and Nucleus Independent Chemical Shifts are explicitly discussed. The NMR chemical shift is explained with the help of the Ring Current Model (RCM) and its both experimental and computational applications are also discussed. Magnetic Susceptibility Anisotropy and its applicability as a magnetic criterion have been elaborated accordingly. A pictorial representation of Current density Analysis Plots and its relevance as a magnetic criterion have also been accounted for. Special attention is given to the NICS criteria, explaining the role of ghost atom, considering it to be the most popular magnetic criterion. Advantages and disadvantages of all the methods along with recent advances are discussed.
Keywords: Aromaticity, magnetic criteria, ring current, NMR chemical shifts, NICS, CDA.
Graphical Abstract
Current Organic Chemistry
Title:Aromaticity in the Light of Magnetic Criteria
Volume: 21 Issue: 27
Author(s): Manoswita Homray, Anirban Misra*Pratim K. Chattaraj
Affiliation:
- Department of Chemistry, University of North Bengal, Darjeeling 734013,India
Keywords: Aromaticity, magnetic criteria, ring current, NMR chemical shifts, NICS, CDA.
Abstract: Magnetic criteria of aromaticity have been analyzed which are currently the most popular methods, considering the circular delocalization of electrons as the genesis of aromaticity. The concept of aromaticity as was visualized by Kekulé to the latest development in the field has been discussed. The other criteria for defining aromaticity such as the chemical behavior, the structural behavior and the energetic criteria are briefly defined keeping the main focus on the magnetic criteria. The various magnetic measures for defining aromaticity such as NMR chemical shifts which include 1H NMR shifts as well as Li+ NMR chemical shifts, Magnetic Susceptibility Anisotropy, Current Density Analysis Plots (CDA) and Nucleus Independent Chemical Shifts are explicitly discussed. The NMR chemical shift is explained with the help of the Ring Current Model (RCM) and its both experimental and computational applications are also discussed. Magnetic Susceptibility Anisotropy and its applicability as a magnetic criterion have been elaborated accordingly. A pictorial representation of Current density Analysis Plots and its relevance as a magnetic criterion have also been accounted for. Special attention is given to the NICS criteria, explaining the role of ghost atom, considering it to be the most popular magnetic criterion. Advantages and disadvantages of all the methods along with recent advances are discussed.
Export Options
About this article
Cite this article as:
Homray Manoswita , Misra Anirban *, Chattaraj K. Pratim , Aromaticity in the Light of Magnetic Criteria, Current Organic Chemistry 2017; 21 (27) . https://dx.doi.org/10.2174/1385272821666170428124343
DOI https://dx.doi.org/10.2174/1385272821666170428124343 |
Print ISSN 1385-2728 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5348 |

- Author Guidelines
- Bentham Author Support Services (BASS)
- Graphical Abstracts
- Fabricating and Stating False Information
- Research Misconduct
- Post Publication Discussions and Corrections
- Publishing Ethics and Rectitude
- Increase Visibility of Your Article
- Archiving Policies
- Peer Review Workflow
- Order Your Article Before Print
- Promote Your Article
- Manuscript Transfer Facility
- Editorial Policies
- Allegations from Whistleblowers
- Announcements