Bonding Character in Tetracoordinate (Phthalocyaninato)iron(II) Complexes with Electron-Withdrawing Substituents as Studied by Mossbauer Spectroscopy

Toshie Ohya; Nagao Kobayashi; Mitsuo Sato

doi:10.1021/ic00262a033

Bonding Character in Tetracoordinate (Phthalocyaninato)iron(II) Complexes with Electron-Withdrawing Substituents as Studied by Mossbauer Spectroscopy

Toshie Ohya, Nagao Kobayashi, Mitsuo Sato

SCI - Chemistry

Research output: Contribution to journal › Article › peer-review

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Abstract

Mossbauer spectra of tetracoordinate (phthalocyaninato)iron(II) complexes with electron-withdrawing substituents were measured. Two kinds of bonding parameters, Σ and II, were introduced for substituted phthalocyanines to interpret Mossbauer parameters in connection with the bonding characteristics of the macrocyclic ligands. They represent a- and π-bonding properties, respectively, and are defined to be larger when more electron density is placed on the iron. Calculated orders of Σ and II are in a good correlation with the sum of the Hammett a constants, Σσ, of the substituents. Several tetracoordinate (porphyrinato)iron(II) complexes were treated similarly.

Original language	English
Pages (from-to)	2506-2509
Number of pages	4
Journal	Inorganic chemistry
Volume	26
Issue number	15
DOIs	https://doi.org/10.1021/ic00262a033
Publication status	Published - 1987 Jul 1

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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abstract = "Mossbauer spectra of tetracoordinate (phthalocyaninato)iron(II) complexes with electron-withdrawing substituents were measured. Two kinds of bonding parameters, Σ and II, were introduced for substituted phthalocyanines to interpret Mossbauer parameters in connection with the bonding characteristics of the macrocyclic ligands. They represent a- and π-bonding properties, respectively, and are defined to be larger when more electron density is placed on the iron. Calculated orders of Σ and II are in a good correlation with the sum of the Hammett a constants, Σσ, of the substituents. Several tetracoordinate (porphyrinato)iron(II) complexes were treated similarly.",

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T1 - Bonding Character in Tetracoordinate (Phthalocyaninato)iron(II) Complexes with Electron-Withdrawing Substituents as Studied by Mossbauer Spectroscopy

AU - Ohya, Toshie

AU - Kobayashi, Nagao

AU - Sato, Mitsuo

PY - 1987/7/1

Y1 - 1987/7/1

N2 - Mossbauer spectra of tetracoordinate (phthalocyaninato)iron(II) complexes with electron-withdrawing substituents were measured. Two kinds of bonding parameters, Σ and II, were introduced for substituted phthalocyanines to interpret Mossbauer parameters in connection with the bonding characteristics of the macrocyclic ligands. They represent a- and π-bonding properties, respectively, and are defined to be larger when more electron density is placed on the iron. Calculated orders of Σ and II are in a good correlation with the sum of the Hammett a constants, Σσ, of the substituents. Several tetracoordinate (porphyrinato)iron(II) complexes were treated similarly.

AB - Mossbauer spectra of tetracoordinate (phthalocyaninato)iron(II) complexes with electron-withdrawing substituents were measured. Two kinds of bonding parameters, Σ and II, were introduced for substituted phthalocyanines to interpret Mossbauer parameters in connection with the bonding characteristics of the macrocyclic ligands. They represent a- and π-bonding properties, respectively, and are defined to be larger when more electron density is placed on the iron. Calculated orders of Σ and II are in a good correlation with the sum of the Hammett a constants, Σσ, of the substituents. Several tetracoordinate (porphyrinato)iron(II) complexes were treated similarly.

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Bonding Character in Tetracoordinate (Phthalocyaninato)iron(II) Complexes with Electron-Withdrawing Substituents as Studied by Mossbauer Spectroscopy

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