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. 2013 May 25;69(Pt 6):o963.
doi: 10.1107/S1600536813013779. Print 2013 Jun 1.

2-(9H-Fluoren-9-yl)-4-(4-fluoro-anilino)-4-oxo-butanoic acid

Tetiana Matviiuk  1 , Michel Baltas, Zoia Voitenko, Marian Gorichko, Christian Lherbet
Affiliations

2-(9H-Fluoren-9-yl)-4-(4-fluoro-anilino)-4-oxo-butanoic acid

Tetiana Matviiuk et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

In the title compound, C23H18FNO3, the tricyclic 9-fluorenyl system is approximately planar (r.m.s. deviation = 0.0279 Å). The N-C(=O) bond length is comparatively short [1.359 (3) Å], which is typical for such conjugated systems. The N atom has a planar configuration [sum of bond angles= 359.8°] due to conjugation of its lone pair with the π-system of the carbonyl group. In the crystal, a three-dimensional network is formed through N-H⋯O and O-H⋯O hydrogen bonds between the amide and carb-oxy-lic acid groups and carbonyl O-atom acceptors.

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Figures

Fig. 1.
Fig. 1.
The molecular structure and atom numbering scheme for the title compound, showing 50% probability displacement ellipsoids.
Fig. 2.
Fig. 2.
The synthetic route to the title compound (II).
See this image and copyright information in PMC

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