Crystal structures and Hirshfeld surface analyses of methyl (2)-(4-bromo-phen-yl)[2-(4-methyl-phen-yl)hydrazinyl-idene]acetate, methyl (2)-(4-bromophen-yl)[2-(3,5-di-methyl-phen-yl)hydrazinyl-idene]acetate, methyl (2)-[2-(4-meth-oxy-phen-yl)hydrazinyl-idene](3-nitro-phen-yl)acetate, methyl (2)-(4-chlorophen-yl)(2-phenyl-hydrazinyl-idene)acetate and methyl (2)-[2-(4-bromo-phen-yl)hydrazinylidene](4-chloro-phen-yl)acetate.

Mol-ecules of the title compounds, methyl ()-2-(4-bromo-phen-yl)-2-[2-(4-methyl-phen-yl)hydrazin-1-yl-idene]acetate, CHBrNO , (), methyl ()-2-(4-bromo-phen-yl)-2-[2-(3,5-di-methyl-phen-yl)hydrazin-1-yl-idene]acetate, CHBrNO, (), methyl ()-2-[2-(4-meth-oxy-phen-yl)hydrazin-1-yl-idene]-2-(3-nitro-phen-yl)acetate, CHNO, (), and methyl ()-2-[2-(4-bromo-phen-yl)hydrazin-1-yl-idene]-2-(4-chloro-phen-yl)acetate, CHBrClNO, (), adopt a configuration with respect to the central C=N bond, while methyl ()-2-(4-chloro-phen-yl)-2-(2-phenyl-hydrazin-1-yl-idene)acetate, CHClNO, (), adopts an configuration. The atoms of the phenyl ring of the bromo-phenyl group of () are disordered over two sets of sites with equal occupancies. In the crystal structure of (), mol-ecules connected by C-H⋯N hydrogen bonds are further linked by C-H⋯π inter-actions, forming ribbons parallel to [010]. In (), pairs of mol-ecules are linked by C-H⋯π inter-actions parallel to [100]. In (), C-H⋯O hydrogen bonds form ribbons parallel to [010], while in (), 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 (), 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.