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Synthesis of 3,4-diferrocenyltoluene ( 7 ), 1-morpholino- and 1-piperidino-2,3-diferrocenylbicyclo[3.1.0]hex-2-enes  8a ,  8b , 1-morpholino- and 1-piperidino-7-ferrocenyl-3,4-ferrocenobicyclo[3.2.1]oct-6-enes  9a ,  9b , 2- and 3-amino(diferrocenyl)-hexa-1,3,5-trienes  10a , b ,  11a , b  by reactions of amino(diferrocenyl)cyclopropenylium tetrafluoro-borates with 1-methylprop-2-enylmagnesium chloride at 80 °C is described. The structures of the compounds obtained were determined by IR,  1 H- and  13 C-NMR spectroscopy and mass spectrometry. X-ray diffraction data for 1-piperidino-7-ferrocenyl-3,4-ferroceno-bicyclo[3.2.1]oct-6-ene ( 9b ), 2-morpholino- and 2-piperidino-1,3-diferrocenyl-4-methyl-hexa-1,3,5-trienes  10a  and  10b  is presented. The electrochemical behaviour of compounds  7 ,  8a ,  10a  and  10b  was investigated by means of cyclic voltammetry and square wave voltammetry. For  7  and  8a  two electrochemical processes (I-II), attributed to the oxidation of the ferrocene moieties were found. On the other hand for compounds  10a  and  10b  a single electron transfer for both ferrocene groups and the electrochemical generation of the monocation and dication species were detected.

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Intramolecular Conversions of (Aminoferrocenylpenta-1,4-dienyl)-ferrocenylcarbenes: Synthesis of Diferrocenylmono-, bi-, tricycles and Amino(diferrocenyl)hexa-1,3,5-trienes