Fun, H.-K.Ching Kheng, C.K.Padaki, M.Malladi, S.Isloor, A.M.2026-02-052009Acta Crystallographica Section E: Structure Reports Online, 2009, 65, 7, pp. o1634-o163516005368https://doi.org/10.1107/S160053680902279Xhttps://idr.nitk.ac.in/handle/123456789/27613In the title compound, C<inf>9</inf>H<inf>10</inf>ClN<inf>3</inf>O, the semicarbazone group is approximately planar, with an r.m.s. deviation from the mean plane of 0.054 (1) Å. The dihedral angle between the least-squares planes through the semicarbazone group and the benzene ring is 30.46 (5)°. In the solid state, mol-ecules are linked via inter-molecular N - H?O and N - H?N hydrogen bonds, generating R<inf>2</inf>2(9) ring motifs which, together with R<inf>2</inf>2(8) ring motifs formed by pairs of inter-molecular N - H?O hydrogen bonds, lead to the formation of a seldom-observed mol-ecular trimer. Furthermore, N - H?O hydrogen bonds form R<inf>2</inf>1(7) ring motifs with C - H?O hydrogen bonds, further consolidating the crystal structure. Mol-ecules are linked by these inter-molecular inter-actions, forming two-dimensional networks parallel to (100).