N′-[(1E)-(4-Fluoro­phen­yl)methyl­idene]thio­phene-2-carbohydrazide

In the title compound, C₁₂H₉FN₂OS, the thienyl ring is disordered over two positions, with the S atom of the major component [occupancy = 87.08 (16)°] oriented towards the ortho-H atom of the benzene ring. The mol­ecule is nearly planar, the dihedral angle between the thio­phene and benzene rings being 13.0 (2)° in the major component. The azomethine C=N double bond in the mol­ecule is of an E configuration. In the crystal, mol­ecules are linked by pairs of N—H...O hydrogen bonds, forming inversion dimers.

2-{[5-(Adamantan-1-yl)-4-methyl-4H-1,2,4-triazol-3-yl]sulfan­yl}-N,N-dimethyl­ethanamine

In the title compound, C₁₇H₂₈N₄S, the 1,2,4-triazole ring is nearly planar [maximum deviation = 0.005 (2) Å]. There are no significant hydrogen bonds observed in the crystal structure. The crystal studied was a non-merohedral twin, the refined ratio of twin components being 0.281 (3):0.719 (3).

3-(1-Adamant­yl)-4-amino-1-(2-benzoyl-1-phenyl­eth­yl)-1H-1,2,4-triazol-5(4H)-thione

In the title compound, C₂₇H₃₀N₄OS, the 3-(adamantan-1-yl)-4-amino-1H-1,2,4-triazole-5(4H)-thione unit and the O atom are each disordered over two sets of sites with refined site-occupancies of 0.7630 (13) and 0.2370 (13). The 1,2,4-triazole ring of the major component forms dihedral angles of 62.61 (17) and 61.93 (16)° with the benzene rings, while that of the minor component makes corresponding angles of 86.3 (4) and 79.1 (4)°. The dihedral angle between the benzene rings is 39.21 (16)°. The mol­ecular structure is stabilized by an intra­molecular C—H...N hydrogen bond, which generates an S(6) ring motif. In the crystal, mol­ecules are linked into inversion dimers by pairs of N—H...S hydrogen bonds.