2-(4-Bromo­phen­yl)-N-(3,4-di­fluoro­phen­yl)acetamide

In the title compound, C₁₄H₁₀BrF₂NO, the dihedral angle between the mean planes of the 4-bromo­phenyl and 3,4-di­fluoro­phenyl rings is 66.4 (1)°. These two planes are twisted by 40.0 (5) and 86.3 (2)°, respectively, from that of the acetamide group. In the crystal, N—H...O hydrogen bonds and weak C—H...O and C—H...F inter­actions form infinite chains along [100].

2-(4-Chloro­phen­yl)-N-(3,4-di­fluoro­phen­yl)acetamide

In the title compound, C₁₄H₁₀ClF₂NO, the dihedral angle between the mean planes of the 4-chloro­phenyl and 3,4-di­fluoro­phenyl rings is 65.2 (1)°. These two planes are twisted by 83.5 (5) and 38.9 (9)°, respectively, from that of the acetamide group. In the crystal, N—H...O hydrogen bonds form infinite chains along [100]. Weak C—H...O and C—H...F inter­actions are also observed and stack mol­ecules along the b axis.