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- W2960358461 abstract "The asymmetric unit of the centrosymmetric title salt solvate, 2C 17 H 17 F 6 N 2 O + · C 4 H 4 O 4 2− ·CH 3 CH 2 OH, (systematic name: 2-{[2,8-bis(trifluoromethyl)quinolin-4-yl](hydroxy)methyl}piperidin-1-ium butanedioate ethanol monosolvate) comprises two independent cations, with almost superimposable conformations and each approximating the shape of the letter L , a butanedioate dianion with an all- trans conformation and an ethanol solvent molecule. In the crystal, supramolecular chains along the a -axis direction are sustained by charge-assisted hydroxy-O—H...O(carboxylate) and ammonium-N—H...O(carboxylate) hydrogen bonds. These are connected into a layer via C—F...π(pyridyl) contacts and π–π stacking interactions between quinolinyl-C 6 and –NC 5 rings of the independent cations of the asymmetric unit [inter-centroid separations = 3.6784 (17) and 3.6866 (17) Å]. Layers stack along the c -axis direction with no directional interactions between them. The analysis of the calculated Hirshfeld surface reveals the significance of the fluorine atoms in surface contacts. Thus, by far the greatest contribution to the surface contacts, i.e. 41.2%, are of the type F...H/H...F and many of these occur in the inter-layer region. However, these contacts occur at separations beyond the sum of the van der Waals radii for these atoms. It is noted that H...H contacts contribute 29.8% to the overall surface, with smaller contributions from O...H/H...O (14.0%) and F...F (5.7%) contacts." @default.
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- W2960358461 date "2019-07-12" @default.
- W2960358461 modified "2023-10-14" @default.
- W2960358461 title "Bis(mefloquinium) butanedioate ethanol monosolvate: crystal structure and Hirshfeld surface analysis" @default.
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- W2960358461 doi "https://doi.org/10.1107/s2056989019009654" @default.
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