Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/4681
Title: Reactions of ferrocenylboranes with 2,5-bis(pyridyl)pyrazine and quaterpyridine: charge-transfer complexes and redox-active macrocycles
Authors: Ding, L.
Ma K., B.
Durner, G.
Bolte, M.
Fabrizi De Biani, Fabrizia 
Zanello, Piero
Wagner, M.
Issue Date: 2002
Project: None 
Journal: JOURNAL OF THE CHEMICAL SOCIETY. DALTON TRANSACTIONS
Abstract: 
Reactions of FcB(Me)Br [1; Fc = (C5H5)Fe(C5H4)] and 1,1′-fc[B(Me)Br]2 [2; fc = (C5H4)2Fe] with 2,5-bis(pyridyl)pyrazine (bppz) and 2,2′:4′,4″:2″,2[triple prime]-quaterpyridine (qpy) are reported. The pyrazine derivative bppz forms stable boronium cations with 1 and 2 to give the complexes [FcB(Me)bppz]Br, [1C]Br, and {1,1′-fc[B(Me)bppz]2}Br2, [2C2]Br2. The 4,4′-bipyridine derivative qpy can be used to link two ferrocenylborane moieties together, which gives access to the open-chain dinuclear aggregate [FcB(Me)qpyB(Me)Fc]Br2, [1D1]Br2, and to the macrocyclic molecule [2D]2Br4. The bppz adducts possess an intense green colour, and the qpy complexes are deeply blue coloured, which is indicative of charge-transfer interactions between the electron-rich ferrocene moieties and their electron-poor aromatic substituents. The hexafluorophosphate salts of all compounds undergo a reversible ferrocene oxidation and several consecutive reduction processes, which are centred at the cationic sidechains
Description: 
40272
URI: http://hdl.handle.net/20.500.12779/4681
ISSN: 1472-7773
DOI: 10.1039/b110993f
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