Structural investigation of N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide and N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]-4-methoxybenzamide

The compound N -[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide, C 21 H 16 FN 3 O 3 S, crystallizes in the monoclinic centrosymmetric space group P 2 1 / c and its molecular conformation is stabilized via an intramolecular N—H...O hydrogen bond. The corresponding para -methoxy derivative, namely, N -[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]-4-methoxybenzamide, C 22 H 18 FN 3 O 4 S, crystallizes in the monoclinic centrosymmetric space group C 2/ c . The supramolecular network mainly comprises N—H...O, N—H...S and C—H...O hydrogen bonds, which contribute towards the formation of the crystal structures for the two molecules. The different intermolecular interactions have been further analysed using Hirshfeld surface analysis and fingerprint plots.