Über substituierte Pentaphenyl-cyclopentadienyl-Verbindungen und Tetracyclone, XII1 Polarographische und EPR-spektroskopische Untersuchungen zur Konformation von Tetracyclonen und deren Radikalionen / Substituted Pentaphenylcyclopentadienyls and Tetraphenylcyclopentadienones, XII1 The Conformation of Tetraphenylcyclopentadienones and their Anion Radicals as Studied by Polarography and EPR Spectroscopy
Open Access
- 1 June 1977
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 32 (6) , 686-692
- https://doi.org/10.1515/znb-1977-0618
Abstract
The polarographic reduction of tetraarylcyclopentadienones is studied in connection with quantummechanical calculations basing on the well known structure of the corresponding ketyls. A linear free energy relationship is found assuming a change in conformation between the redox components. Comparison of the ketone geometry with the conformation of tetraarylpyrryls gives a prove for this surprising result.Keywords
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