5-Fluoro-3-phenyl-N'-(4-propyl-cyclo-hexyl-idene)-1H-indole-2-carbohydrazide.

In the title compound, C24H26FN3O, the cyclo-hexane ring adopts a chair conformation; the propyl substituent is in an equatorial orientation and the bond-angle sum at the C atom bonded to the carbohydrazide N atom is 360.0°. The dihedral angle between the 1H-indole ring system and the phenyl ring is 82.77 (13)°. A weak intra-molecular C-H⋯π contact occurs. In the crystal, pairs of mol-ecules related by a crystallographic twofold axis are linked by bifurcated N-H⋯(O,N) hydrogen bonds; a C-H⋯O inter-action occurs between the same pair. The dimers are linked by C-H⋯F and C-H⋯π inter-actions, generating a three-dimensional network.

5-Fluoro-N'-(4-methyl-cyclo-hexyl-idene)-3-phenyl-1H-indole-2-carbohydrazide.

The title compound, C22H22FN3O, crystallized with two independent mol-ecules (A and B) in the asymmetric unit; these are linked by a pair of N-H⋯O hydrogen bonds, forming a pseudo-centrosymmetric dimer with an R (2) 2(10) motif. In addition, a number of C-H⋯π inter-actions are also observed. The 1H-indole ring systems in mol-ecules A and B are essentially planar [maximum deviations of 0.019 (2) and 0.014 (2) Å, respectively] and make dihedral angles of 77.64 (10) and 69.50 (9)°, respectively, with thephenyl rings.

5-Fluoro-N-(2-methyl-3-oxo-1-thia-4-aza-spiro-[4.5]dec-4-yl)-3-phenyl-1H-indole-2-carboxamide.

In the title compound, C24H24FN3O2S, the 1,3-thia-zolidine ring adopts an envelope conformation with the S atom as the flap, while the cyclo-hexane ring is in a chair conformation. In the crystal, mol-ecules are linked by N-H⋯O and C-H⋯F hydrogen bonds, forming a three-dimensional network. The unit cell contains six voids of 57 Å(3), but the residual electron density (highest peak = 0.23 e Å(-3) and deepest hole = -0.19 e Å(-3)) in the difference Fourier map suggests no solvent mol-ecule occupies this void.

N'-(4-Ethyl-cyclo-hexyl-idene)-5-fluoro-3-phenyl-1H-indole-2-carbohydrazide.

The title compound, C23H24FN3O, crystallizes with two independent mol-ecules (I and II) in the asymmetric unit. These pairs of mol-ecules are linked to each other as N-H⋯O dimers with an R 2 (2)(10) motif. Furthermore, the crystal structure also exhibits C-H⋯π inter-actions. The atoms of the ethyl group in mol-ecule I are disordered over two sites with an occupancy ratio of 0.817 (6):0.183 (6).