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Fe (III) complexes of a bis-benzimidazolyl diamide ligand: Spectral and Catalytic studies

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Title: Fe (III) complexes of a bis-benzimidazolyl diamide ligand: Spectral and Catalytic studies
Authors: Ahuja, Gauri1 gauriahuja84@gmail.com, Mathur, Pavan pavanmat@yahoo.co.in
Source: Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy. Dec2011, Vol. 83 Issue 1, p180-186. 7p.
Subjects: Iron, Metal complexes, Imidazoles, Metal catalysts, Organic synthesis, Quadrupoles, Metal ions, Nuclear magnetic resonance spectroscopy
Abstract: Abstract: A new tetradentate bis benzimidaozlyl diamide ligand N,N′-Bis (benzimidazol-2-yl-methyl)-hexane-1,6-dicarboxamide (GBSA) has been synthesized and utilized to prepare new Fe(III) complexes with exogenous anionic ligand X=Cl− and NO3 −. Isomer shift values are in the range found for Iron in the +3 oxidation state while Quadrupole Splitting indicates large distortion from a six coordinate geometry, a finding supported by low temperature EPR work. The E 1/2 values are found to be quite cathodic indicating stability of the Iron (III) complexes. The oxidation of alcohols was investigated using [Fe(GBSA)Cl3] as the catalyst with TBHP as an alternate source of oxygen. The respective carbonyl products have been isolated and characterized by 1H NMR, electronic spectroscopy, mass and IR spectral studies. [Copyright &y& Elsevier]
Copyright of Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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  Data: Fe (III) complexes of a bis-benzimidazolyl diamide ligand: Spectral and Catalytic studies
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  Data: <searchLink fieldCode="AR" term="%22Ahuja%2C+Gauri%22">Ahuja, Gauri</searchLink><relatesTo>1</relatesTo><i> gauriahuja84@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Mathur%2C+Pavan%22">Mathur, Pavan</searchLink><i> pavanmat@yahoo.co.in</i>
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  Data: <searchLink fieldCode="JN" term="%22Spectrochimica+Acta+Part+A%3A+Molecular+%26+Biomolecular+Spectroscopy%22">Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy</searchLink>. Dec2011, Vol. 83 Issue 1, p180-186. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Iron%22">Iron</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+complexes%22">Metal complexes</searchLink><br /><searchLink fieldCode="DE" term="%22Imidazoles%22">Imidazoles</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+catalysts%22">Metal catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Organic+synthesis%22">Organic synthesis</searchLink><br /><searchLink fieldCode="DE" term="%22Quadrupoles%22">Quadrupoles</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+ions%22">Metal ions</searchLink><br /><searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance+spectroscopy%22">Nuclear magnetic resonance spectroscopy</searchLink>
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  Data: Abstract: A new tetradentate bis benzimidaozlyl diamide ligand N,N′-Bis (benzimidazol-2-yl-methyl)-hexane-1,6-dicarboxamide (GBSA) has been synthesized and utilized to prepare new Fe(III) complexes with exogenous anionic ligand X=Cl− and NO3 −. Isomer shift values are in the range found for Iron in the +3 oxidation state while Quadrupole Splitting indicates large distortion from a six coordinate geometry, a finding supported by low temperature EPR work. The E 1/2 values are found to be quite cathodic indicating stability of the Iron (III) complexes. The oxidation of alcohols was investigated using [Fe(GBSA)Cl3] as the catalyst with TBHP as an alternate source of oxygen. The respective carbonyl products have been isolated and characterized by 1H NMR, electronic spectroscopy, mass and IR spectral studies. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Spectrochimica Acta Part A: Molecular & Biomolecular Spectroscopy is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.1016/j.saa.2011.08.014
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      – Code: eng
        Text: English
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        PageCount: 7
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      – SubjectFull: Iron
        Type: general
      – SubjectFull: Metal complexes
        Type: general
      – SubjectFull: Imidazoles
        Type: general
      – SubjectFull: Metal catalysts
        Type: general
      – SubjectFull: Organic synthesis
        Type: general
      – SubjectFull: Quadrupoles
        Type: general
      – SubjectFull: Metal ions
        Type: general
      – SubjectFull: Nuclear magnetic resonance spectroscopy
        Type: general
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      – TitleFull: Fe (III) complexes of a bis-benzimidazolyl diamide ligand: Spectral and Catalytic studies
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            NameFull: Mathur, Pavan
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              Text: Dec2011
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