title: Octaalkyl tetracene-1,2,3,4,7,8,9,10-octacarboxylates: synthesis by twofold [2+2+2] cocyclization and crystallochromy.
abstract: Tetracene octaesters, which were prepared by twofold [2+2+2] cocyclization, were isolated as red, orange, and orange-yellow solids for the methyl, ethyl, and propyl ester derivatives, respectively. X-Ray crystallographic analysis reveals that the difference in solid-state color arises owing to differences in molecular packing.
authors.affiliation: Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-22, 80, Japan. kitamura@eng.u-hyogo.ac.jp
authors.forename: Chitoshi
authors.initials: C
authors.lastname: Kitamura
authors.forename: Akira
authors.initials: A
authors.lastname: Takenaka
authors.forename: Takeshi
authors.initials: T
authors.lastname: Kawase
authors.forename: Takashi
authors.initials: T
authors.lastname: Kobayashi
authors.forename: Hiroyoshi
authors.initials: H
authors.lastname: Naito