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1,1′-Dibutyl-3,3′-biindolinylidene-2,2′-dione

✍ Scribed by Yuan, Mao-Sen ;Fang, Qi ;Ji, Lei ;Yu, Wen-Tao

Publisher: International Union of Crystallography
Year: 2007
Tongue: English
Weight: 767 KB
Volume: 63
Category: Article
ISSN: 1600-5368
DOI: 10.1107/s160053680705009x

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✦ Synopsis

The title molecule, C~24~H~26~N~2~O~2~, has its central C=C double bond placed on an inversion centre, and both indolin-2-one units are coplanar. The three terminal C atoms of the two butyl groups are disordered over two positions; the site occupancy factors are ca. 0.54 and 0.46. The central C=C bond exhibits an E configuration and is conjugated with the indole heterocycles. This aromatic character is related to the planarity of the isoindigo core and is reminiscent of that observed in stilbene.

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