title: Benzenoid and quinonoid nitrogen-containing heteropentacenes.
abstract: Benzenoid or quinonoid-that is the question? In connection with the debate on the structure of dihydro-5,7,12,14-tetraazapentacene, both benzenoid and quinonoid nitrogen-containing heteropentacenes were successfully isolated and investigated (see picture). This report presents an exploratory study of the molecular and electronic structures, molecular packing, and semiconductor properties of the two compounds. These findings may lead to useful implications for the interesting ladder polymers.
authors.affiliation: Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Tang
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.forename: Hoi Shan
authors.initials: HS
authors.lastname: Chan
authors.forename: Qian
authors.initials: Q
authors.lastname: Miao