2,4-Bis([6-(2,2-dimethylpropyl)-3-ethyl-1,3-benzothiazol-2(3H)-ylidene]methyl)cyclobutenediylium-1,3-diolate.
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.
Lawrentz
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Institut für Organische Chemie, Technische Universität Braunschweig, Postfach 3329, D-38023 Braunschweig, Germany.
Grahn
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Dix
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Jones
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