Journal article
Complexes of structural analogues of terpyridyl with iron and zinc; the x-ray crystal structure of bis[2,6-bis(benzimidazol2-yl)pyridine]iron(II) trifluoromethylsulphonate bis-ethanol solvate
Polyhedron, v 11(6), pp 635-646
1992
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Abstract
Complexes of iron(II) and zinc(II) with a series of tridentate ligands of the type [2,6-bis(benz-X-azol-2-yl)pyridine] (X = imid, thi, ox) have been prepared. The crystal structure of [Fe(2,6-bis(benzimidazol-2-yl)pyridine)
2](CF
3SO
3)
2·2C
2H
5OH shows the iron(II) to be low spin with a meridional octahedral coordination by two tridentate ligands.
57Fe Mössbauer spectra of the complexes [FeL
2]
2+ show strong dependence of ligand strength on the non-coordinated heteroatom, X, of the ligand: benzimidazole ligands give low spin complexes, benzoxazoles give high spin complexes and benzthiazoles show spin-crossover properties. Derivatization of the imidazole nitrogen has only a small effect on the ligand strength. The complexes [FeLX
2] (X = anion) are all high spin. Partial dissociation is observed in solvents with a strong affinity for iron(II); the iron(II) complexes show metal-to-ligand charge transfer transitions whose intensity depends strongly on the spin state of the iron.
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Details
- Title
- Complexes of structural analogues of terpyridyl with iron and zinc; the x-ray crystal structure of bis[2,6-bis(benzimidazol2-yl)pyridine]iron(II) trifluoromethylsulphonate bis-ethanol solvate
- Creators
- Stephane Rüttimann - University of GenevaCatherine M. Moreau - University of GenevaAlan F. Williams - University of GenevaGerald Bernardinelli - University of GenevaAnthony W. Addison - Drexel University
- Publication Details
- Polyhedron, v 11(6), pp 635-646
- Publisher
- Elsevier
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:A1992HM43700010
- Scopus ID
- 2-s2.0-0000023524
- Other Identifier
- 991019173518304721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Inorganic & Nuclear
- Crystallography