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Lack of electronic coupling despite half-wave potential splittings in ferrocenylvinyl-substituted [2.2]-paracyclophanes

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2013

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Kowalsky, Konrad

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http://nbn-resolving.de/urn:nbn:de:bsz:352-228256
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https://doi.org/10.1016/j.jorganchem.2013.03.024
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Journal of Organometallic Chemistry. 2013, 735, pp. 10-14. ISSN 0022-328X. eISSN 1872-8561. Available under: doi: 10.1016/j.jorganchem.2013.03.024

Zusammenfassung

Pseudo-para bis(ferrocenylvinyl)-[2.2]-paracyclophane 2 and its constitutional isomer 3 have been prepared and investigated with respect to their electrochemical and UV/Vis/NIR spectroelectrochemical properties. Cyclic and Square Wave voltammetric measurements show two consecutive one-electron oxidations with a modest redox splitting of 60 and 84 mV, respectively, for the individual Fc/Fc+ couples. In spite of the redox splitting, radical cations 2+ and 3+ constitute class I mixed-valent systems with no detectable electronic coupling between the individual redox sites. The results are thus very similar to those for the pseudo-ortho isomer 1+, which was previously reported (J. Organomet. Chem. 2012, 717, 14) but erroneously assigned the pseudo-para structure.

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ISO 690MÜCKE, Philipp, Rainer F. WINTER, Konrad KOWALSKY, 2013. Lack of electronic coupling despite half-wave potential splittings in ferrocenylvinyl-substituted [2.2]-paracyclophanes. In: Journal of Organometallic Chemistry. 2013, 735, pp. 10-14. ISSN 0022-328X. eISSN 1872-8561. Available under: doi: 10.1016/j.jorganchem.2013.03.024
BibTex
@article{Mucke2013elect-22825,
  year={2013},
  doi={10.1016/j.jorganchem.2013.03.024},
  title={Lack of electronic coupling despite half-wave potential splittings in ferrocenylvinyl-substituted [2.2]-paracyclophanes},
  volume={735},
  issn={0022-328X},
  journal={Journal of Organometallic Chemistry},
  pages={10--14},
  author={Mücke, Philipp and Winter, Rainer F. and Kowalsky, Konrad}
}
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