Crystallographic and spectroscopic characterization of 3-chloro-5-fluoro-salicyl-aldehyde.

The title compound (systematic name: 3-chloro-5-fluoro-2-hy-droxy-benzaldehyde), C7H4ClFO2, is a dihalogenated salicyl-aldehyde derivative that has been studied for its anti-bacterial characteristics. The salicyl-aldehyde engages in intra-molecular hydrogen bonding with an O-H⋯O distance of 2.6231 (19) Å while the mol-ecules pack together via weak inter-molecular C-H⋯O, C-H⋯F and F⋯O inter-actions and offset face-to-face π-stacking.