Electron Delocalization in a New Mixed‐Valence σ‐Bridged Biferrocenium Cation
作者： Teng-Yuan Dong , Ting-Yu Lee
关键词: Crystallography 、 Electrochemistry 、 Valence (chemistry) 、 Chemistry 、 Electron delocalization 、 Electron transfer 、 Mössbauer spectroscopy 、 Metallocene 、 Photochemistry
摘要: The physical properties of mixed-valence 1,3-diferrocenyl-propan-1-one (1) are reported. Mossbauer spectrum cation 1 at 300 K shows two doublets, one for a Fe11 metallocene (ΔEQ = 2.192 mm s−1) and the other FeIII (ΔEO 0.179 Thus, thermal electron-transfer rate in is less than time scale technique (∼107 s−1). Furthermore, NMR, electrochemical IR, near-IR data conclusively indicate that there no significant interaction between ferrocenyl moieties.
sci-hub.se 参考文章(28)
David N. Hendrickson, Y. S. Sohn, D. Michael Duggan, Harry B. Gray, Low‐temperature (4.2°K) study of the 2E1u ←2E2g band system in the electronic spectra of various ferricenium compounds The Journal of Chemical Physics. ,vol. 58, pp. 4666- 4675 ,(1973) , 10.1063/1.1679029
Carol Creutz, Mixed Valence Complexes of d
5
-d
6
Metal Centers Progress in Inorganic Chemistry. ,vol. 30, pp. 1- 73 ,(2007) , 10.1002/9780470166314.CH1
David E. Richardson, Henry Taube, Mixed-valence molecules: Electronic delocalization and stabilization Coordination Chemistry Reviews. ,vol. 60, pp. 107- 129 ,(1984) , 10.1016/0010-8545(84)85063-8
Harry B. Gray, Y. S. Sohn, N. Hendrickson, Electronic structure of metallocenes Journal of the American Chemical Society. ,vol. 93, pp. 3603- 3612 ,(1971) , 10.1021/JA00744A011
Michelle J. Cohn, Teng-Yuan Dong, David N. Hendrickson, Steven J. Geib, Arnold L. Rheingold, Valence-detrapping modes and phase transitions affecting the intramolecular electron-transfer rate of mixed-valence biferrocenium cation Journal of The Chemical Society, Chemical Communications. pp. 1095- 1097 ,(1985) , 10.1039/C39850001095
N.S. Hush, M.N. Paddon-Row, E. Cotsaris, H. Oevering, J.W. Verhoeven, M. Heppener, Distance dependence of photoinduced electron transfer through non-conjugated bridges Chemical Physics Letters. ,vol. 117, pp. 8- 11 ,(1985) , 10.1016/0009-2614(85)80394-8
Michiko Konno, Shi-aki Hyodo, Sei-ichiro Iijima, Crystal Structure of Mixed-valence Compound 1′,1'″-Dipropylbiferrocenium Triiodide with Averaged-valence Type Irons at 298 K and with Trapped-valence Type Irons at 110 K and Thermal Electron Transfer Process of Mono-oxidized Binuclear Ferrocene Derivatives Bulletin of the Chemical Society of Japan. ,vol. 55, pp. 2327- 2335 ,(1982) , 10.1246/BCSJ.55.2327
Michael F. Rettig, Russell S. Drago, Electron delocalization in paramagnetic metallocenes. I. Nuclear magnetic resonance contact shifts Journal of the American Chemical Society. ,vol. 91, pp. 1361- 1370 ,(1969) , 10.1021/JA01034A017
Izumi Motoyama, Masanobu Watanabe, Hirotoshi Sano, MÖSSBAUER SPECTROSCOPIC STUDY ON THE MIXED- AND AVERAGED-VALENCE FERROCENE DERIVATIVES Chemistry Letters. ,vol. 7, pp. 513- 516 ,(1978) , 10.1246/CL.1978.513
Masahiro Kai, Motomi Katada, Hirotoshi Sano, 57Fe-Mössbauer Spectroscopic Studies of a New Series of Mixed-valence Biferrocenium Salts Chemistry Letters. ,vol. 17, pp. 1523- 1526 ,(1988) , 10.1246/CL.1988.1523