The asymmetric unit of the title compound, C(14)H(16)ClNO, contains two independent mol-ecules, both with the cyclo-hexene ring in a sofa conformation. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules related by translation along the a axis into two crystallographically independent chains. Weak C-H⋯π inter-actions are also observed.

The title compound, C(19)H(28)O(3), the fungal-transformed metabolite of the steroid methyl-oestrenol contains four fused rings A, B, C and D. Ring A adopts a half-chair and the trans-fused rings B and C adopt chair confirmations; the five-membered D ring is folded like an envelope. In the crystal, adjacent mol-ecules are linked by O-H⋯O(carbon-yl) and O-H⋯O(hy-droxy) hydrogen bonds into a laye...

In the title compound, C(17)H(17)NO(2), the dihedral angle between the two benzene rings is 6.9 (1)°. The meth-oxy group is twisted slightly away from the aniline ring [C-O-C-C = 12.2 (3)°]. An intra-molecular N-H⋯O hydrogen bond generating an S(6) ring is observed. The crystal packing is stabilized by weak C-H⋯O and C-H⋯π inter-actions, forming a two-dimensional network.

In the title compound, C(13)H(17)NO, the dihedral angle between the aryl ring and the amino-acryl-aldehyde mean plane [N-C=C-C=O; maximum deviation = 0.0144 (9) Å] is 53.43 (4)°. There is an intra-molecular N-H⋯O hydrogen bond involving the amine and carbonyl groups. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming chains propagating along [001].

In the title compound, C(15)H(11)NO(3), the configuration of the keto group with respect to the olefinic double bond is s-cis. The two benzene rings form a dihedral angle of 5.00 (5)°. The mol-ecules are linked into a two-dimensional network parallel to (04) by C-H⋯O hydrogen bonds.

In the title compound, [Fe(C(5)H(5))(C(15)H(13)BrNO)], formed from the reaction of ferrocenoylacetone and 4-bromo-aniline, the mol-ecular structure is stabilized by an intra-molecular N-H⋯O hydrogen bond between the amine and carbonyl groups.

The title compound, C11H12O3, is potentially a butane-2,3-dione derivative but exists in the enol form in the solid state. In the mol-ecule, the 3-hy-droxy-but-3-en-2-one, benzene and methoxyl fragments are almost co-planar. The 3-hy-droxy-but-3-en-2-one fragment is almost planar with an r.m.s. deviation of 0.040 Å. The dihedral angle between this plane and that of the benzene ring is 5.88 (4)°...

The overall shape of the mol-ecule of the title compound, C(17)H(15)BrO(2), can be described by the dihedral angles between three planar fragments: 1-bromo-2-meth-oxy-phenyl ring [maximum deviation = 0.003 (2) Å], the central prop-2-en-1-one chain [maximum deviation = 0.005 (2) Å], and the methyl-phenyl ring [maximum deviation = 0.004 (2) Å]. The terminal planes are twisted by 10.37 (12)°, whil...