Synthesis, X-ray crystal structure, Hirshfeld surface analysis and DFT studies of ()-'-(2-bromo-benzyl-idene)-4-methylbenzohydrazide.

The title mol-ecule, CHBrNO, displays a configuration with respect to the C=N double bond. The dihedral angle between the bromo- and methyl-substituted benzene rings is 16.1 (3)°.

2-(2,4-Di-fluoro-phen-yl)-4,5-dimethyl-1-(4-methyl-phen-yl)-1H-imidazole monohydrate.

The asymmetric unit of the title compound, C18H16F2N2·H2O, contains two independent mol-ecules (A and B), and two independent water mol-ecules of crystallization. In mol-ecule A, the imidazole ring makes dihedral angles of 47.46 (7) and 60.