1,3,3-Trimethyl-5-styryl-2-[(1,3,3-trimethyl-5-styryl-2-indolinylidene)methyl]-3H-indolinium Picrate: an Extended Trichromophoric System

The trichromophoric system of the title compound, C₃₉H₃₉N₂⁺.C₆H₂N₃O₇⁻, adopts a di-cis conformation in which the indolenine end groups are mutually rotated; the interplanar angle is 47.1 (1)°. The trans-configurate styryl moieties are anti orientated relative to the cyanine unit. The length of the extended chromophore (H19...H19′) is 26.0 Å.

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