Preparation and infrared spectroelectrochemical studies of five-coordinate (por)Fe(OC(=O)R) compounds (por = TPP, OEP; R = CCl3, CH2Cl)

Nan Xu, Beiqi Yan, Dennis Awasabisah, Douglas R. Powell, George B. Richter-Addo

Research output: Contribution to journalArticle

Abstract

Three five-coordinate iron acetate porphyrin complexes, (por)Fe(OC(=O)R) (por = porphyrinato dianion; R = CCl3, CH2Cl), have been synthesized and characterized. The crystal structure of (TPP)Fe(OC(=O)CCl3) (TPP = tetraphenylporphyrinato dianion) has been determined by X-ray crystallography. The redox behaviors of the (por)Fe(OC(=O)R) compounds have been investigated by cyclic voltammetry and infrared spectroelectrochemistry. Analysis of the data reveals that the first oxidations of the (por)Fe(OC(=O)R) compounds are porphyrin-centered processes to yield π-radical cations of the form (por[rad]+)Fe(OC(=O)R), and the first reductions may facilitate the dissociation of the axial acetate ligands from the iron centers.

Original languageEnglish (US)
Pages (from-to)183-188
Number of pages6
JournalInorganica Chimica Acta
Volume469
DOIs
StatePublished - Jan 1 2018

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Porphyrins
porphyrins
acetates
Acetates
Iron
Spectroelectrochemistry
Infrared radiation
iron
preparation
X ray crystallography
Cyclic voltammetry
crystallography
Cations
Crystal structure
Positive ions
Ligands
dissociation
cations
Oxidation
ligands

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Xu, Nan ; Yan, Beiqi ; Awasabisah, Dennis ; Powell, Douglas R. ; Richter-Addo, George B. / Preparation and infrared spectroelectrochemical studies of five-coordinate (por)Fe(OC(=O)R) compounds (por = TPP, OEP; R = CCl3, CH2Cl). In: Inorganica Chimica Acta. 2018 ; Vol. 469. pp. 183-188.
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abstract = "Three five-coordinate iron acetate porphyrin complexes, (por)Fe(OC(=O)R) (por = porphyrinato dianion; R = CCl3, CH2Cl), have been synthesized and characterized. The crystal structure of (TPP)Fe(OC(=O)CCl3) (TPP = tetraphenylporphyrinato dianion) has been determined by X-ray crystallography. The redox behaviors of the (por)Fe(OC(=O)R) compounds have been investigated by cyclic voltammetry and infrared spectroelectrochemistry. Analysis of the data reveals that the first oxidations of the (por)Fe(OC(=O)R) compounds are porphyrin-centered processes to yield π-radical cations of the form (por[rad]+)Fe(OC(=O)R), and the first reductions may facilitate the dissociation of the axial acetate ligands from the iron centers.",
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Preparation and infrared spectroelectrochemical studies of five-coordinate (por)Fe(OC(=O)R) compounds (por = TPP, OEP; R = CCl3, CH2Cl). / Xu, Nan; Yan, Beiqi; Awasabisah, Dennis; Powell, Douglas R.; Richter-Addo, George B.

In: Inorganica Chimica Acta, Vol. 469, 01.01.2018, p. 183-188.

Research output: Contribution to journalArticle

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T1 - Preparation and infrared spectroelectrochemical studies of five-coordinate (por)Fe(OC(=O)R) compounds (por = TPP, OEP; R = CCl3, CH2Cl)

AU - Xu, Nan

AU - Yan, Beiqi

AU - Awasabisah, Dennis

AU - Powell, Douglas R.

AU - Richter-Addo, George B.

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