1-Ethyl-4-[1-(1-phenyl-ethyl-idene)hydrazin-2-yl-idene]-3,4-dihydro-1H-2λ6,1-benzothia-zine-2,2-dione

摘要

In the title compound, C18H19N3O2S, the thia-zine ring adopts an envelope conformation, with the S atom displaced by 0.732?(1)?? from the other atoms of the ring. The phenyl ring is oriented at a dihedral angle of 79.33?(7)° with respect to the fused benzene ring. The conformations about the two double bonds in the R2C=N—N=C(CH3)Ar grouping are Z and E, respectively. In the crystal, inversion dimers linked by pairs of C—H?O inter-actions generate R22(8) and R22(12) loops, as parts of infinite chains along the a-axis direction.