Crystal structures and Hirshfeld surface analyses of methyl (2<i>Z</i>)-(4-bromophenyl)[2-(4-methylphenyl)hydrazinylidene]acetate, methyl (2<i>Z</i>)-(4-bromophenyl)[2-(3,5-dimethylphenyl)hydrazinylidene]acetate, methyl (2<i>Z</i>)-[2-(4-methoxypheny

Mol-ecules of the title compounds, methyl (<i>Z</i>)-2-(4-bromo-phen-yl)-2-[2-(4-methyl-phen-yl)hydrazin-1-yl-idene]acetate, C₁₆H₁₅BrN₂O _<i>2</i> , (<b>1</b>), methyl (<i>Z</i>)-2-(4-bromo-phen-yl)-2-[2-(3,5-di-methyl-phen-yl)hydrazin-1-yl-idene]acetate, C₁₇H₁₇BrN₂O₂, (<b>2</b>), methyl (<i>Z</i>)-2-[2-(4-meth-oxy-phen-yl)hydrazin-1-yl-idene]-2-(3-nitro-phen-yl)acetate, C₁₆H₁₅N₃O₅, (<b>3</b>), and methyl (<i>Z</i>)-2-[2-(4-bromo-phen-yl)hydrazin-1-yl-idene]-2-(4-chloro-phen-yl)acetate, C₁₅H₁₂BrClN₂O₂, (<b>5</b>), adopt a <i>Z</i> configuration with respect to the central C=N bond, while methyl (<i>E</i>)-2-(4-chloro-phen-yl)-2-(2-phenyl-hydrazin-1-yl-idene)acetate, C₁₅H₁₃ClN₂O₂, (<b>4</b>), adopts an <i>E</i> configuration. The atoms of the phenyl ring of the bromo-phenyl group of (<b>1</b>) are disordered over two sets of sites with equal occupancies. In the crystal structure of (<b>1</b>), mol-ecules connected by C-H⋯N hydrogen bonds are further linked by C-H⋯π inter-actions, forming ribbons parallel to [010]. In (<b>2</b>), pairs of mol-ecules are linked by C-H⋯π inter-actions parallel to [100]. In (<b>3</b>), C-H⋯O hydrogen bonds form ribbons parallel to [010], while in (<b>4</b>), the mol-ecules are bonded together by C-H⋯N, C-H⋯Cl, C-H⋯O and C-H⋯π inter-actions parallel to [010]. In (<b>5</b>), C-H⋯Br, C-H⋯O and C-H⋯Cl inter-actions lead to the formation of layers parallel to (002). C-H⋯π inter-actions also occur between these planes. Hirshfeld surface analyses were performed to investigate and qu-antify the inter-molecular inter-actions between the mol-ecules of all compounds.