Author/Authors :
Jens Geier، نويسنده , , Kai Exner، نويسنده , , Markus V?gtle، نويسنده , , Markus Kegel، نويسنده , , Fushun Yang، نويسنده , , Dieter Hunkler، نويسنده , , Oliver Cullmann، نويسنده , , Horst Prinzbach، نويسنده ,
Abstract :
By oxidation of (presumably) bislithiated, unusually proximate, syn-periplanar bishydrazines an alternative access to σ-bishomoaromatic 4N/6e dianions is realized. Formal N-alkylation/arylation of these 4N/6e dianions leads to novel, cyclically delocalized 4N/6e monoanions. Experimental realization is achieved by addition of metal organyls to proximate bisdiazenes as well as by deprotonation of the respective diazene/alkyl(aryl) hydrazines. The nature of the 4N/6e bonding motif is investigated by UV/Vis and NMR spectroscopy as well as by DFT calculations.
