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Updated: May 29, 2025

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Intra- and inter-molecular C-H⋯F hydrogen bonds in the crystal structure of
Eric Bosch1, Nathan P Bowling2
1Chemistry and Biochemistry Department Missouri State University, 901 South National Avenue Springfield MO 65897 USA.
Abstract:
The title mol-ecule, C22H6F8, crystallizes in the monoclinic space group P21/c with two unique mol-ecules in the asymmetric unit and Z = 8. Each mol-ecule features a short intra-molecular sp 2-C-H⋯F hydrogen bond with H⋯F separations at 2.363 (14) and 2.270 (14) Å, corresponding to 91 and 87.5% of the sum of the van der Waals radii, and C-H⋯F angles of 158.3 (14) and 166.8 (14)°, respectively. Each mol-ecule also forms an inter-molecular bifurcated CH⋯(F)2 inter-action with H⋯F distances ranging from 2.500 (16) to 2.597 (17) Å.
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