title: Highly electron-deficient hexaazapentacenes and their dihydro precursors.
abstract: Novel silylethynylated N-heteropentacenes that have three adjacent pyrazine rings at the center of a pentacene backbone are reported. These hexaazapentacenes exhibit a record low energy level of lowest unoccupied molecular orbital (LUMO) for N-heteropentacenes and thus are able to oxidize dihydroanthracene to anthracene. Their synthetic precursors are the corresponding dihydrohexaazapentacenes, which exhibit interesting H-bonding.
authors.affiliation: Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China.
authors.forename: Zikai
authors.initials: Z
authors.lastname: He
authors.forename: Renxin
authors.initials: R
authors.lastname: Mao
authors.forename: Danqing
authors.initials: D
authors.lastname: Liu
authors.forename: Qian
authors.initials: Q
authors.lastname: Miao