Interpreting Aromaticity and Antiaromaticity through Bifurcation Analysis of the Induced Magnetic Field

Ricardo Pino-Rios, Gloria Cárdenas-Jirón, Lina Ruiz, William Tiznado

Resultado de la investigación: Article

Resumen

In all molecules, a current density is induced when the molecule is subjected to an external magnetic field. In turn, this current density creates a particular magnetic field. In this work, the bifurcation value of the induced magnetic field is analyzed in a representative set of aromatic, non-aromatic and antiaromatic monocycles, as well as a set of polycyclic hydrocarbons. The results show that the bifurcation value of the ring-shaped domain adequately classifies the studied molecules according to their aromatic character. For aromatic and nonaromatic molecules, it is possible to analyze two ring-shaped domains, one diatropic (inside the molecular ring) and one paratropic (outside the molecular ring). Meanwhile, for antiaromatic rings, only a diatropic ring-shaped domain (outside the molecular ring) is possible to analyze, since the paratropic domain (inside the molecular ring) is irreducible with the maximum value (attractor) at the center of the molecular ring. In some of the studied cases, i. e., in heteroatomic species, bifurcation values do not follow aromaticity trends and present some inconsistencies in comparison to ring currents strengths, showing that this approximation provides only a qualitative estimation about (anti)aromaticity.

Idioma originalEnglish
Páginas (desde-hasta)321-326
Número de páginas6
PublicaciónChemistryOpen
Volumen8
N.º3
DOI
EstadoPublished - 1 mar 2019

Huella dactilar

Magnetic fields
Molecules
Cyclic Hydrocarbons
Current density

ASJC Scopus subject areas

  • Chemistry(all)

Citar esto

Pino-Rios, Ricardo ; Cárdenas-Jirón, Gloria ; Ruiz, Lina ; Tiznado, William. / Interpreting Aromaticity and Antiaromaticity through Bifurcation Analysis of the Induced Magnetic Field. En: ChemistryOpen. 2019 ; Vol. 8, N.º 3. pp. 321-326.
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abstract = "In all molecules, a current density is induced when the molecule is subjected to an external magnetic field. In turn, this current density creates a particular magnetic field. In this work, the bifurcation value of the induced magnetic field is analyzed in a representative set of aromatic, non-aromatic and antiaromatic monocycles, as well as a set of polycyclic hydrocarbons. The results show that the bifurcation value of the ring-shaped domain adequately classifies the studied molecules according to their aromatic character. For aromatic and nonaromatic molecules, it is possible to analyze two ring-shaped domains, one diatropic (inside the molecular ring) and one paratropic (outside the molecular ring). Meanwhile, for antiaromatic rings, only a diatropic ring-shaped domain (outside the molecular ring) is possible to analyze, since the paratropic domain (inside the molecular ring) is irreducible with the maximum value (attractor) at the center of the molecular ring. In some of the studied cases, i. e., in heteroatomic species, bifurcation values do not follow aromaticity trends and present some inconsistencies in comparison to ring currents strengths, showing that this approximation provides only a qualitative estimation about (anti)aromaticity.",
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Interpreting Aromaticity and Antiaromaticity through Bifurcation Analysis of the Induced Magnetic Field. / Pino-Rios, Ricardo; Cárdenas-Jirón, Gloria; Ruiz, Lina; Tiznado, William.

En: ChemistryOpen, Vol. 8, N.º 3, 01.03.2019, p. 321-326.

Resultado de la investigación: Article

TY - JOUR

T1 - Interpreting Aromaticity and Antiaromaticity through Bifurcation Analysis of the Induced Magnetic Field

AU - Pino-Rios, Ricardo

AU - Cárdenas-Jirón, Gloria

AU - Ruiz, Lina

AU - Tiznado, William

PY - 2019/3/1

Y1 - 2019/3/1

N2 - In all molecules, a current density is induced when the molecule is subjected to an external magnetic field. In turn, this current density creates a particular magnetic field. In this work, the bifurcation value of the induced magnetic field is analyzed in a representative set of aromatic, non-aromatic and antiaromatic monocycles, as well as a set of polycyclic hydrocarbons. The results show that the bifurcation value of the ring-shaped domain adequately classifies the studied molecules according to their aromatic character. For aromatic and nonaromatic molecules, it is possible to analyze two ring-shaped domains, one diatropic (inside the molecular ring) and one paratropic (outside the molecular ring). Meanwhile, for antiaromatic rings, only a diatropic ring-shaped domain (outside the molecular ring) is possible to analyze, since the paratropic domain (inside the molecular ring) is irreducible with the maximum value (attractor) at the center of the molecular ring. In some of the studied cases, i. e., in heteroatomic species, bifurcation values do not follow aromaticity trends and present some inconsistencies in comparison to ring currents strengths, showing that this approximation provides only a qualitative estimation about (anti)aromaticity.

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