title: 2,4-Bis([6-(2,2-dimethylpropyl)-3-ethyl-1,3-benzothiazol-2(3H)-ylidene]methyl)cyclobutenediylium-1,3-diolate.
abstract: The title compound, C34H40N2O2S2, adopts a trans conformation. The four conjugated Csp2-Csp2 single and double bonds of the polymethinic moiety, which bridges both heterocyclic end groups and the central four-membered ring, display nearly equal bond lengths. The molecule is nearly planar, with interplanar angles between the benzothiazole end groups and the central four-membered ring of 6.9 (1) and 7.7 (1) degrees; the angle between the heterocyclic systems is 1.8 (1) degrees. The crystal packing involves pi-stacking effects, with intermolecular C...C distances varying from 3.755 (3) to 3.991 (3) A.
authors.affiliation: Institut für Organische Chemie, Technische Universität Braunschweig, Postfach 3329, D-38023 Braunschweig, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Lawrentz
authors.forename: W
authors.initials: W
authors.lastname: Grahn
authors.forename: I
authors.initials: I
authors.lastname: Dix
authors.forename: P G
authors.initials: PG
authors.lastname: Jones