Arikawa, Shinobu; Shimizu, Akihiro; Shintani, Ryo published the artcile< Azoniadibenzo[a,j]phenalenide: A Polycyclic Zwitterion with Singlet Biradical Character>, Electric Literature of 576-83-0, the main research area is azoniadibenzo phenalenide zwitterion singlet triplet biradical crystal structure; aromaticity; density-functional calculations; polycycles; radicals; zwitterions.
A polycyclic zwitterion, azoniadibenzo[a,j]phenalenide, having a singlet biradical character, was synthesized and isolated for the first time. The neg. charge was found to be delocalized over the periphery of the main core of the zwitterion and the pos. charge was localized near the nitrogen atom. Its singlet biradical character was confirmed by a small HOMO-LUMO energy gap with their spatial overlap, and observation of thermally excited triplet species together with DFT calculations
Angewandte Chemie, International Edition published new progress about Atropisomerization. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, Electric Literature of 576-83-0.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary