Reactivity trends of Fe phthalocyanines confined on graphite electrodes in terms of donor-acceptor intermolecular hardness: Linear versus volcano correlations

C. Linares-Flores, J. Espinoza-Vergara, J. H. Zagal, R. Arratia-Perez

Resultado de la investigación: Article

2 Citas (Scopus)

Resumen

In this work, we have studied the interaction between the hydrazine N2H4 molecule with several FeN4 macrocyclic complexes (FePc's). In order to modulate the electron density located on the metal center using iron-phthalocyanine (FePc) as the reference, we used substituted iron-phthalocyanines with different types of substituents electron-donating groups such as iron-tetraamino-phthalocyanine (4β(NH2)FePc) and iron-octamethoxyphthalocyanine (8β(OCH3)FePc), and with electron-withdrawing groups such as iron-tetranitrophthalocyanine(4β(NO2)FePc) and iron-hexadecachlorophthalocyanine (16(Cl)FePc), respectively. We have found that the energy of interaction between hydrazine and the Fe center in the macrocycle increases as the electron-withdrawing power of the substituents increases. When rate constants instead of currents are compared in a semilog plot versus ΔεD-A, a linear correlation is found where log k increases as the intermolecular hardness of the systems decreases.

Idioma originalEnglish
Páginas (desde-hasta)176-180
Número de páginas5
PublicaciónChemical Physics Letters
Volumen614
DOI
EstadoPublished - 20 oct 2014

Huella dactilar

Graphite electrodes
Volcanoes
hydrazine
volcanoes
hardness
Iron
reactivity
graphite
Hardness
trends
iron
electrodes
Electrons
hydrazines
Carrier concentration
Rate constants
electrons
Metals
Molecules
phthalocyanine

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Citar esto

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abstract = "In this work, we have studied the interaction between the hydrazine N2H4 molecule with several FeN4 macrocyclic complexes (FePc's). In order to modulate the electron density located on the metal center using iron-phthalocyanine (FePc) as the reference, we used substituted iron-phthalocyanines with different types of substituents electron-donating groups such as iron-tetraamino-phthalocyanine (4β(NH2)FePc) and iron-octamethoxyphthalocyanine (8β(OCH3)FePc), and with electron-withdrawing groups such as iron-tetranitrophthalocyanine(4β(NO2)FePc) and iron-hexadecachlorophthalocyanine (16(Cl)FePc), respectively. We have found that the energy of interaction between hydrazine and the Fe center in the macrocycle increases as the electron-withdrawing power of the substituents increases. When rate constants instead of currents are compared in a semilog plot versus ΔεD-A, a linear correlation is found where log k increases as the intermolecular hardness of the systems decreases.",
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Reactivity trends of Fe phthalocyanines confined on graphite electrodes in terms of donor-acceptor intermolecular hardness : Linear versus volcano correlations. / Linares-Flores, C.; Espinoza-Vergara, J.; Zagal, J. H.; Arratia-Perez, R.

En: Chemical Physics Letters, Vol. 614, 20.10.2014, p. 176-180.

Resultado de la investigación: Article

TY - JOUR

T1 - Reactivity trends of Fe phthalocyanines confined on graphite electrodes in terms of donor-acceptor intermolecular hardness

T2 - Linear versus volcano correlations

AU - Linares-Flores, C.

AU - Espinoza-Vergara, J.

AU - Zagal, J. H.

AU - Arratia-Perez, R.

PY - 2014/10/20

Y1 - 2014/10/20

N2 - In this work, we have studied the interaction between the hydrazine N2H4 molecule with several FeN4 macrocyclic complexes (FePc's). In order to modulate the electron density located on the metal center using iron-phthalocyanine (FePc) as the reference, we used substituted iron-phthalocyanines with different types of substituents electron-donating groups such as iron-tetraamino-phthalocyanine (4β(NH2)FePc) and iron-octamethoxyphthalocyanine (8β(OCH3)FePc), and with electron-withdrawing groups such as iron-tetranitrophthalocyanine(4β(NO2)FePc) and iron-hexadecachlorophthalocyanine (16(Cl)FePc), respectively. We have found that the energy of interaction between hydrazine and the Fe center in the macrocycle increases as the electron-withdrawing power of the substituents increases. When rate constants instead of currents are compared in a semilog plot versus ΔεD-A, a linear correlation is found where log k increases as the intermolecular hardness of the systems decreases.

AB - In this work, we have studied the interaction between the hydrazine N2H4 molecule with several FeN4 macrocyclic complexes (FePc's). In order to modulate the electron density located on the metal center using iron-phthalocyanine (FePc) as the reference, we used substituted iron-phthalocyanines with different types of substituents electron-donating groups such as iron-tetraamino-phthalocyanine (4β(NH2)FePc) and iron-octamethoxyphthalocyanine (8β(OCH3)FePc), and with electron-withdrawing groups such as iron-tetranitrophthalocyanine(4β(NO2)FePc) and iron-hexadecachlorophthalocyanine (16(Cl)FePc), respectively. We have found that the energy of interaction between hydrazine and the Fe center in the macrocycle increases as the electron-withdrawing power of the substituents increases. When rate constants instead of currents are compared in a semilog plot versus ΔεD-A, a linear correlation is found where log k increases as the intermolecular hardness of the systems decreases.

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