Graphene‐like Molecules with Four Zigzag Edges. Issue 22 (2nd May 2018)

• Record Type: Journal Article
• Authors: Gu, Yanwei; Wu, Xiaojin; Gopalakrishna, Tullimilli Y.; Phan, Hoa; Wu, Jishan
• Is Part Of: Angewandte Chemie international edition. Volume 57:Issue 22(2018)
• Page Start: 6541
• Page End: 6545
• Publication Date: 2018-05-02
• Subjects: aromaticity -- graphene -- polycycles -- radicals -- structure elucidation; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201802818
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: An efficient synthetic method toward graphene‐like molecules (GLMs), having four zigzag edges, is described. They were obtained as stable materials and their structures were confirmed by X‐ray crystallographic analysis. They exhibit topology‐ and size‐dependent electronic properties and global aromaticity, which are all different from GLMs having either all‐armchair edges, or three zigzag edges, or two armchair/two zigzag edges. They can be reversibly oxidized and reduced into stable charged species, which show fragmental aromatic character to minimize anti‐aromaticity. Our studies give some new insights into the electronic structures and properties of a new type of rarely studied GLMs. Abstract : Take the zigzag : An efficient method was developed to access graphene‐like molecules (GLMs) with four zigzag edges. These compounds exhibit different geometries and electronic properties compared to GLMs having other edge structures. They also show moderate energy gaps and global aromatic character.