Abstract
In the title molecule, C24H17ClN4O3S, the central tricyclic moiety is twisted slightly, as indicated by the dihedral angles of 4.86 (5) and 0.97 (6)°, respectively, between the five-membered ring and the C3N3and pyridyl rings. Additionally, the chlorobenzene ring makes a dihedral angle of 65.80 (5)° with the pyridyl ring. Weak C—H...O, C—Cl...N [3.0239 (13) Å] and π–π stacking interactions [inter-centroid distance between thienyl rings = 3.6994 (8) Å, and between thienyl and pyridyl rings = 3.7074 (8) Å] contribute to the molecular packing. The ethyl group in the ester moiety is disordered over two sets of sites, with the major component having an occupancy of 0.567 (11).
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