Journal article
Synthesis and proton transfer-linked redox tuning of ruthenium(II) complexes with tridentate 2,6-bis(benzimidazol-2-yl)pyridine ligands
Dalton Transactions, (16), pp 2477-2484
1993
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Abstract
New ruthenium complexes of two tridentate ligands 2,6-bis(benzimidazol-2-yl)pyridine (L
7
) and 2,6-bis(1-methylbenzimidazol-2-yl)pyridine (L
8
) have been synthesised. Proton and
13
C NMR spectroscopy served well for their characterization, and the observed change. Proton chemical shift yields information about the electron distribution accompanying deprotonation of the ligands. The [RuL
7
2
]
n
+
chelate acta as a tetrabasic acid, with p
K
a
ranging from 2.5 to 10.7, depending on the ruthenium oxidation state. The absorption spectra and oxidation potentials are consequently sensitive to solution pH and to solvent. The proton-coupled oxidative electron-transfer reactions of the complexes afford stable higher oxidation states such as Ru
IV
. The properties of the complexes are discussed in comparison to those of previously reported bis(tridentate ligand)ruthenium compounds.
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Details
- Title
- Synthesis and proton transfer-linked redox tuning of ruthenium(II) complexes with tridentate 2,6-bis(benzimidazol-2-yl)pyridine ligands
- Creators
- Xiao XiaomingMasa-aki HagaTakeko Matsumura-InoueYu RuAnthony W AddisonKenji Kano
- Publication Details
- Dalton Transactions, (16), pp 2477-2484
- Publisher
- Royal Society of Chemistry
- Number of pages
- 8
- Resource Type
- Journal article
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:A1993LU72000008
- Scopus ID
- 2-s2.0-37049083138
- Other Identifier
- 991019174012404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Inorganic & Nuclear