首页|S-Shaped Fused Azacorannulene Dimer:Structural and Redox Properties
S-Shaped Fused Azacorannulene Dimer:Structural and Redox Properties
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Because of their unique structural and chemical properties,buckybowl molecules have attracted considerable attention in a wide range of scientific disciplines.The importance and utility of bucky-bowl molecules significantly increases once they acquire larger π-surface area and/or heteroatoms.The fusion of buckybowl molecules has emerged as a new strategy to extend the π-surface of polycyclic aromatic compounds;however,the π-extension of heteroatom-embedded buckybowls by the fusion strategy is still rare.Here we report the synthesis and propeties of a fused azacorannulene dimer bear-ing a C62N2 core(1a),which can also be regarded as a double aza[5]helicene.Due to the steric repulsion between two azapentabenzocorannulene moieties,this molecule shows a rigid S-shaped structure where the two azacorannulene bowls face in opposite direc-tions.Stepwise chemical oxidation of 1a resulted in the formation of the corresponding radical cation(1a+)and dication(1a2+),providing an important insight into their aromaticity.The fusion of heteroatom-embedded buckybowls provides a pow-erful way to synthesize π-extended polycyclic aro-matic molecules.
NETL
NSTL
万方数据
维普
