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Mössbauer and Electrochemical Studies of Bridged Biferrocenes and Biferrocenylenes
Author(s) -
Wei HoHsiang,
Chang ShinnJen
Publication year - 1984
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.198400002
Subject(s) - chemistry , ferrocene , electrochemistry , cyclic voltammetry , mössbauer spectroscopy , valence (chemistry) , iodine , redox , electrode , voltammetry , oxidation process , crystallography , medicinal chemistry , inorganic chemistry , organic chemistry , chemical engineering , engineering
A series of neutral and oxidized π‐bridged biferrocenes (Fc—x—Fc) and biferrocenylenes (FC(—x—) 2 Fc) (x= —CH=CH—, —CH 3 ,C=CCH 3 —) were prepared and their physical properties have been studied by means of Mössbauuer and cyclic voltammetry. The electrode reaction of these bridged ferrocene derivatives appears to involve a consecutive two‐step oxidation process. The results also show that the voltage difference between the first and second oxidaton potentials of the bridged biferrocenes was found to be largely exceeded that founded for the corresponding the bridged biferrocenylenes. The Mössbauer data show that the oxidation of doubly bridged Fc(—x—) 2 Fc with iodine, DDQ, and TCNQ given the corresponding dioxidized salts only and no stable mixed‐valence compounds were found.