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 carboxylic acid groups and carbonyl O-atom acceptors.
Highlights
359.8 ] due to conjugation of its lone pair with the -system of the carbonyl group
H atoms treated by a mixture of independent and constrained refinement max = 0.24 e Å3
A three-dimensional network is formed through N—H O and O—H O
Summary
Gorichkoa* and Christian Lherbetc a National Taras Shevchenko University, Department of Chemistry, Volodymyrska str. 64, 01033 Kyiv, Ukraine, bLaboratoire de Synthese et Physico-Chimie de Molecules d’Interet Biologique, Paul Sabatier University, 118 route de Narbonne, 31062, Toulouse, France, and cUniversité de Toulouse, UPS, Laboratoire de Synthèse et Physico-Chimie de Molécules d’Intérêt Biologique, LSPCMIB, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France R factor = 0.054; wR factor = 0.104; data-to-parameter ratio = 12.3.
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