Synthesis, electrochemical and photophysical properties of heterodinuclear Ru-Mn and Ru-Zn complexes bearing ambident Schiff base ligand
Dalton Transactions, ISSN: 1477-9234, Vol: 39, Issue: 24, Page: 5650-5657
2010
- 9Citations
- 21Captures
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Metrics Details
- Citations9
- Citation Indexes9
- CrossRef9
- Captures21
- Readers21
- 21
Article Description
While ruthenium tris(diimine) complexes have been extensively studied, this is not the case with ruthenium bis(diimine)X complexes where X represents a pyridinyl-based ligand. The synthesis of a new complex ([2][PF ]) bearing two ambident Schiff base ligands (HL) constituted by the assembly of phenol and pyridinyl moieties is reported. Thanks to the heteroditopic property of HL, compound [2] was used as an original metalloligand for the coordination of a redox-active (Mn(iii)) and redox-inactive (Zn(ii)) second metal cation affording three heterodinuclear complexes, namely, [(bpy)RuLMn(acac)][PF ] ([3][PF]; acac = acetylacetonate), [(bpy)RuLMn(OAc)][PF] ([4][PF], OAc = acetate), and [(bpy) RuLZn][PF] ([5][PF ]). The influence of the second metal with regard to the photophysical and electrochemical properties of the ruthenium bis(diimine)X subunit was then investigated. In the case of Ru(ii)-Mn(iii) heterodinuclear complexes, a partial quenching of the luminescence was observed as a consequence of an efficient electron transfer process from the ruthenium to the manganese. EPR and spectrophotometric analyses of the oxidized species resulting from the one-electron oxidation of compounds [3] and [4] showed the formation of a Mn(iv) species for [3] and an organic free radical for [4]. © 2010 The Royal Society of Chemistry.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=77953307035&origin=inward; http://dx.doi.org/10.1039/c003276j; http://www.ncbi.nlm.nih.gov/pubmed/20485756; https://xlink.rsc.org/?DOI=c003276j; https://dx.doi.org/10.1039/c003276j; https://pubs.rsc.org/en/content/articlelanding/2010/dt/c003276j
Royal Society of Chemistry (RSC)
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