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  1. ; (, Acta Crystallographica Section E Crystallographic Communications)
    The title molecule, C22H6F8, crystallizes in the monoclinic space groupP21/cwith two unique molecules in the asymmetric unit andZ= 8. Each molecule features a short intramolecularsp2-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 molecule also forms an intermolecular bifurcated CH...(F)2interaction with H...F distances ranging from 2.500 (16) to 2.597 (17) Å. 
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    Free, publicly-accessible full text available December 1, 2025