3-Anilino-1-ferrocenylpropan-1-one

In the title ferrocene derivative, [Fe(C₅H₅)(C₁₄H₁₄NO)], the dihedral angle between the mean planes of the phenyl ring and the substituted cyclo­penta­dienyl ring is 84.4 (1)°. The mol­ecules are connected into centrosymmetric dimers via N—H...O hydrogen bonds. In addition, C—H...O and C—H...N contacts stabilize the crystal packing.

1-Ferrocenyl-3-(4-methyl­anilino)propan-1-one

In the title ferrocene derivative, [Fe(C₅H₅)(C₁₅H₁₆NO)], the dihedral angle between the best planes of the benzene and the substituted cyclo­penta­dienyl ring is 83.4 (1)°. The presence of a methyl substituent in the para position of the aniline group does not alter the crystal packing compared to that of 3-anilino-1-ferrocenylpropan-1-one [Leka et al. (2012). Acta Cryst. E68, m229]. The molecules are connected into centro­symmetric dimers via N—H...O hydrogen bonds. In addition, C—H...O and C—H...N contacts stabilize the crystal packing.

1-Ferrocenyl-3-(3-fluoro­anilino)propan-1-one

The title ferrocene derivative, [Fe(C₅H₅)(C₁₄H₁₃FNO)], crystallizes in the same space group with similar unit-cell parameters as the derivatives 3-anilino-1-ferrocenylpropan-1-one [Leka et al. (2012). Acta Cryst. E68, m229] and 1-ferrocenyl-3-(4-methyl­anilino)propan-1-one [Leka et al. (2012). Acta Cryst. E68, m230]. The dihedral angle between the best planes of the benzene ring and the substituted cyclo­penta­dienyl ring is 83.4 (1)°. The presence of the electronegative fluoro substituent in the meta position of the aniline group does not alter the crystal packing compared to the other two derivatives. The molecules are connected into centrosymmetric dimers via N—H...O hydrogen bonds. In addition, C—H...O and C—H...N contacts stabilize the crystal packing.

3-(3-Acetyl­anilino)-1-ferrocenylpropan-1-one

The title ferrocene-containing Mannich base, [Fe(C₅H₅)(C₁₆H₁₆NO₂)], crystallizes with two independent mol­ecules (A and B) in the asymmetric unit. Mol­ecules A and B have similar conformations. The dihedral angles between the best planes of the benzene and substituted cyclo­penta­dienyl rings are 88.59 (9) and 84.39 (10)° in A and B, respectively. In the crystal, the independent mol­ecules form centrosymmetric dimers via corresponding N—H...O hydrogen bonds. The dimers further arrange via C—H...π and C—H...O inter­actions. There are no significant inter­actions between the A and B mol­ecules.

1-Ferrocenyl-3-(2-methyl­anilino)propan-1-one

In the ferrocene-containing Mannich base, [Fe(C₅H₅)(C₁₅H₁₆NO)], the dihedral angle between the mean planes of the benzene ring and the substituted cyclo­penta­dienyl ring is 84.63 (7)°. The conformation of the title compound significantly differs from those found in corresponding m-tolyl­amino and p-tolyl­amino derivatives. In the crystal, C—H...O inter­actions connect the mol­ecules into chains, which further inter­act by means of C—H...π inter­actions. It is noteworthy that the amino H atom is shielded and is not involved in hydrogen bonding.

4-[(2E)-2-(2-Hy­droxy­benzyl­idene)hydrazin-1-yl]benzonitrile

The asymmetric unit of the title Schiff base, C₁₄H₁₁N₃O, contains two independent mol­ecules which have similar conformations. The dihedral angles between the benzene rings are 4.19 (9) and 14.18 (9)° in the two mol­ecules. An intra­molecular O—H...N hydrogen bond stabilizes the mol­ecular conformation of each mol­ecules. The crystal packing is dominated by pairs of equivalent N—H...N and C—H...O hydrogen bonds which arrange the mol­ecules into layers parallel to (-111).

2-(1,3-Dioxoisoindolin-2-yl)acetic acid–N′-[(E)-4-meth­oxy­benzyl­idene]pyridine-4-carbohydrazide (2/1)

In the crystal structure of the title compound, 2C₁₀H₇NO₄·C₁₄H₁₃N₃O₂, the two independent acid mol­ecules are connected through strong O—H...N and O—H...O hydrogen bonds to the central mol­ecule of the anti­tubercular drug N′-[(E)-4-meth­oxy­benzyl­idene]pyridine-4-carbohydrazide. Two such trimolecular units related by an inversion centre inter­act through a pair of N—H...O hydrogen bonds, forming a 3 + 3 mol­ecular aggregate. The dihedral angle between the aromatic rings of the hydrazone mol­ecule is 1.99 (12)°. The crystal packing features weak C—H...O and π–π stacking inter­actions, with centroid–centroid distances of 3.8460 (19) and 3.8703 (13) Å.

2-[(Phenyl­carbamo­yl)amino]­butyl N-phenyl­carbamate

In the title compound, C₁₈H₂₁N₃O₃, the terminal phenyl rings make a dihedral angle of 86.3 (5)°. In the crystal, mol­ecules are linked by N—H...O hydrogen bonds into chains along [001], forming parallel C(4) and R₁²(6) graph-set motifs.