Journal article
Oxo-bridged complexes of iron(III) derived from 2-(2′-hydroxyphenyl)-benzothiazole and 2-(2′-hydroxyphenyl)benzimidazole ligands
Inorganica Chimica Acta, v 166(1), pp 59-69
1989
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Abstract
Iron(III) complexes containing substituted 2-(2′- oxyphenyl)benzothiazole (PBT) and 2-(2′-oxyphenyl)benzimidazole (PBI) ligands were prepared. These have mostly been characterized as oxo-bridged compounds by their magnetic susceptibility and EPR behavior with a general formula [Fe(L)
2]
2O. Most of the compounds have limited solubility, with the methoxy- and dimethylamino-substituted analogues being somewhat more soluble. Diffuse reflectance spectra and solution optical spectra indicate some effect of ligand basicity on the position of the phenolate to iron(III) charge-transfer band with electron-releasing substituents on the ligands shifting this band to lower energy. In the benzimidazole complex this band was shifted to higher energy relative to its benzothiazole counterpart. Electrochemical studies show irreversible electron transfer and indicate a stabilization of the iron(III) oxidation state relative to iron(II) by electron-releasing substituents on the ligand. Temperature dependent magnetic susceptibility reveals that most of the compounds are strongly antiferromagnetically coupled.
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Details
- Title
- Oxo-bridged complexes of iron(III) derived from 2-(2′-hydroxyphenyl)-benzothiazole and 2-(2′-hydroxyphenyl)benzimidazole ligands
- Creators
- Curtis G. Wahlgren - Drexel UniversityAnthony W. Addison - Drexel UniversitySudhir Burman - Drexel UniversityLaurence K. Thompson - Memorial University of NewfoundlandEkkehard Sinn - University of VirginiaTheresa M. Rowe - University of Virginia
- Publication Details
- Inorganica Chimica Acta, v 166(1), pp 59-69
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:A1989CJ26100014
- Scopus ID
- 2-s2.0-0004890403
- Other Identifier
- 991019173944104721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Inorganic & Nuclear