title: Crystal structure of 7,15-bis-(4-tert-butyl-phen-yl)-1,9-di-methyl-hepta-zethrene.
abstract: The title compound, C50H44,1, was synthesized as a derivative of hepta-zethrene bearing two methyl and twotert-butyl-phenyl substituents, respectively, at the 1,9- and 7,15-positions. The asymmetric unit consists of one half of the mol-ecule, which lies about an inversion centre. Albeit remotely located, the substituents contort the hepta-zethrene plane. Thetert-butyl-phenyl substituents stand approximately perpendicular to the core plane, with a dihedral angle of 79.09 (5)° between the phenalene ring system and the substituted benzene ring, and prevent direct inter-molecular contacts of the hepta-zethrene cores.
authors.affiliation: Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Sho
authors.initials: S
authors.lastname: Kamata
authors.affiliation: Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan; JST, ERATO, Isobe Degenerate π-Integration Project, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Sota
authors.initials: S
authors.lastname: Sato
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Singapore.
authors.forename: Jishan
authors.initials: J
authors.lastname: Wu
authors.affiliation: Advanced Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan; JST, ERATO, Isobe Degenerate π-Integration Project, Aoba-ku, Sendai 980-8577, Japan; Department of Chemistry, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Hiroyuki
authors.identifier: https://orcid.org/0000-0001-8907-0694
authors.initials: H
authors.lastname: Isobe
keywords: crystal structure; hepta­zethrene; substituent effect