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Updated: Jan 19, 2026
Ionic Crystal Structures: Effect of Charge, Size and Ratio of Cation and Anions
The first crystal structure of the pyrrolo-[1,2-c]oxazole ring system
Mohamed M Zreigh1, Harry Adams2, Richard F W Jackson2
1Department of Chemistry, Faculty of Science, Zawia University, PO Box 16168, Zawia, Libya.
Abstract:
The title compound, C7H4F3NO2, 3-tri-fluoro-methyl-1H-pyrrolo-[1,2-c]oxazol-1-one, is the first crystal structure of the pyrrolo-[1,2-c]oxazole ring system: the fused ring system is almost planar (r.m.s. deviation = 0.006 Å). In the crystal, weak C-H⋯O and C-H⋯F hydrogen bonds link the mol-ecules into [001] chains and π-π stacking inter-actions consolidate the structure.
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