Unique Type II Halogen···Halogen Interactions
in Pentafluorophenyl-Appended 2,2′-Bithiazoles
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Abstract
Herein,
we report the design and synthesis of 2,2′-bithiazole
derivatives with efficient intermolecular halogen interactions. The
single crystal X-ray diffraction studies revealed unique type-II halogen
interactions in these derivatives. The shortest type-II F···F
interactions within the distance of 2.67 Å, at an angle of 89.1°
and 174.2°, was observed for the first time. The Gaussian calculations
were performed to further establish predominant F···F
interactions