Homodinuclear Complexes of [Cu(dppf)](+) or [Ru(bpy)(2)](2+) with 1,4-Bis(camphorquinoneimino)benzene (bcqb) as a Redox-Active Bridging Ligand
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F21%3A00544233" target="_blank" >RIV/61388955:_____/21:00544233 - isvavai.cz</a>
Result on the web
<a href="http://hdl.handle.net/11104/0321264" target="_blank" >http://hdl.handle.net/11104/0321264</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/ejic.202100405" target="_blank" >10.1002/ejic.202100405</a>
Alternative languages
Result language
angličtina
Original language name
Homodinuclear Complexes of [Cu(dppf)](+) or [Ru(bpy)(2)](2+) with 1,4-Bis(camphorquinoneimino)benzene (bcqb) as a Redox-Active Bridging Ligand
Original language description
The product mu-bcqb from the reaction between p-phenylenediamine and two equivalents of camphorquinone has been used as a potentially conjugated molecular bridge between two complex fragments [Cu(dppf)](+), dppf=1,1'-bis(diphenylphosphino)ferrocene, to yield 1(2+), and between two [Ru(bpy)(2)](2+) moieties, resulting in 2(4+). The molecular structure of 1(BF4)(2) shows an intramolecular Cu-Cu distance of 8.04 angstrom and a torsionally twisted conformation of the bridge, while cyclic voltammetry, EPR, IR and UV-vis-NIR spectroelectrochemistry reveal two closely spaced one-electron reductions and a ferrocene-based two-electron oxidation. Compound 2(PF6)(4) exhibits at least three one-electron reduction waves and one 2e-oxidation, the former attributed to mu-bcqb and the latter assigned to metal-based processes showing no evidence for a Ru-Ru mixed-valent intermediate. However, intra-ligand based mixed valency with intense LLIVCT absorptions in the near infrared was observed for the metal coordinated mu-bcqb(.-) and mu-bcqb(.3-) bridges. The two examples 1(n+) and 2(n+) illustrate that a combination of physical methods is advantageous to analyze and define the correct electronic structures in complexes involving several metal centers and noninnocent ligand components.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Journal of Inorganic Chemistry
ISSN
1434-1948
e-ISSN
1099-0682
Volume of the periodical
2021
Issue of the periodical within the volume
29
Country of publishing house
DE - GERMANY
Number of pages
10
Pages from-to
2976-2985
UT code for WoS article
000667326200001
EID of the result in the Scopus database
2-s2.0-85108943207