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The mol­ecule of the title compound, C26H24N4O7S, adopts a trans conformation about the central N—N bond, presumably to minimize steric between the substituents on these two atoms. An intra­molecular N—H...O hydrogen bond occurs. The phenyl ring is disordered over two sets of sites, with an occupancy ratio of 0.624 (8):0.376 (8). The azolidine ring is essentially planar [maximum deviation = 0.008 (5) Å] and makes a dihedral angle of 4.3 (2)° with the benzene ring and dihedral angles of 74.1 (3) and 69.1 (5)°, respectively, with the mean planes of the major and minor components of the disordered phenyl ring. The packing in the crystal is aided by the formation of several weak C—H...O and C—H...N inter­actions.

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In the title compound, C6H4N4S3, the 1,3,4-thia­diazole ring is essentially planar, with an r.m.s. deviation of 0.001 Å. The two N—C—S—C torsion angles in the mol­ecule are −23.41 (15) and 0.62 (14)°. One aceto­nitrile group is above the plane of the 1,3,4-thia­diazole ring and the other is below it, indicating syn and anti orientations. In the crystal, C—H...N hydrogen bonds link the molecules into ribbons along [010].
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