Abstract
In the tripodinium cation of the title compound {systematic name: 2-[(E)-1-(4-methylphenyl)-3-(pyrrolidin-1-ium-1-yl)prop-1-enyl]pyridinium bis(2,4,6-trinitrophenolate)}, C19H24N2 +·2C6H2N3O7 −, the N atoms on both the pyrrolidine and pyridinium groups are protonated. The pyrrolidine group adopts a slightly distorted envelope configuration. Strong N—H⋯O cation–anion hydrogen bonds and weak intermolecular N—H⋯O interactions link the dication and two anions. In both picrate anions, the nitro groups display rotational disorder over two orientations in a 0.605 (6):0.395 (6) ratio. The crystal packing also features weak intermolecular π–π [centroid–centroid distance = 3.8036 (14) Å] and C—H⋯O interactions.
Highlights
In the tripodinium cation of the title compound {systematic name: 2-[(E)-1-(4-methylphenyl)-3-(pyrrolidin-1-ium-1-yl)prop1-enyl]pyridinium bis(2,4,6-trinitrophenolate)}, C19H24N2+2C6H2N3O7, the N atoms on both the pyrrolidine and pyridinium groups are protonated
H atoms treated by a mixture of independent and constrained refinement max = 0.63 e Å3
In view of the importance of the title compound, this paper reports the crystal structure of (I), C19H24N2+
Summary
Refinement a Department of Studies in Chemistry, University of Mysore, Manasagangotri, Mysore. H atoms treated by a mixture of independent and constrained refinement max = 0.63 e Å3. Key indicators: single-crystal X-ray study; T = 173 K; mean (C–C) = 0.003 Å; disorder in main residue; R factor = 0.067; wR factor = 0.192; data-to-parameter ratio = 17.2. In the tripodinium cation of the title compound {systematic name: 2-[(E)-1-(4-methylphenyl)-3-(pyrrolidin-1-ium-1-yl)prop1-enyl]pyridinium bis(2,4,6-trinitrophenolate)}, C19H24N2+2C6H2N3O7, the N atoms on both the pyrrolidine and pyridinium groups are protonated. N—H O interactions link the dication and two anions. In both picrate anions, the nitro groups display rotational disorder over two orientations in a 0.605 (6):0.395 (6) ratio. Data collection: CrysAlis PRO (Oxford Diffraction, 2010); cell refinement: CrysAlis PRO; data reduction: CrysAlis RED (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL
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