No abstract

In the title compound, C21H24O3, the enone unit is in the s–cis configuration. The dihedral angle between the benzene rings is 2.18 (4)°. In the crystal, mol­ecules are linked by pairs of O—H⋯O inter­molecular hydrogen bonds, forming inversion dimers. The crystal structure is also consolidated by C—H⋯π inter­actions.

In the title compound, C25H32O3, the asymmetric unit contains two crystallographically independent mol­ecules: both enone groups adopt an s-cis configuration. In the crystal, O—H⋯O and C—H⋯O inter­molecular inter­actions form bifurcated hydrogen bonds, which generate R 1 2(6) ring motifs. These inter­molecular inter­actions link the mol­ecules into one-dimensional chains along the [10] direction. The crystal structure is further stabilized by C—H⋯π inter­actions.

In the title compound, C21H24O3, inter­molecular O—H⋯O and C—H⋯O inter­actions form bifurcated acceptor bonds, generating R 2 1(6) ring motifs. These ring motifs link the mol­ecules into extended chains along [010]. The crystal structure is further stabilized by C—H⋯π inter­actions.

There are two mol­ecules in the asymmetric unit of the title compound, C21H24O3, in which the dihedral angles between the aromatic rings are 6.4 (1) and 7.0 (1)°. The enone moiety of both mol­ecules adopts an s–cis configuration. In the crystal, inter­molecular O—H⋯O and C—H⋯O inter­actions to the same acceptor O atom generate R 2 1(6) ring motifs and further C—H⋯O inter­actions generate R 2 2(8) ring motifs. Topologically, the R 2 1(6) and R 2 2(8) ring motifs are arranged alternately, forming [001] chains of mol­ecules. The crystal structure is further stabilized by C—H⋯π inter­actions.

In the title compound, C29H40O3, the enone moiety adopts an s-cis conformation. The dihedral angle between the benzene rings is 4.33 (5)° The least-squares mean line through the tetra­decyl side chain forms a dihedral angle of 83.99 (7)° with the normal to the attached benzene ring. In the crystal, O—H⋯O and C—H⋯O hydrogen bonds involving the keto and the hy­droxy O atoms form ribbons along [-41-1]. The crystal structure also features C—H⋯π inter­actions.

Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.003 Å; R factor = 0.070; wR factor = 0.190; data-to-parameter ratio = 22.6.In the title compound, C 21 H 24 O 3 , the conformation of the enone group is s-cis. The benzene rings are inclined at an angle of 7.9 (1) . The alkoxy tail is planar, with a maximum deviation from the least-squares plane of 0.009 (2) Å , and adopts a trans conformation throughout. An intramolecular O-HÁ Á ÁO interaction between the keto and hydroxy groups forms S(6) ring motifs. In the crystal, molecules are arranged in a head-to-tail manner down the a axis and are subsequently stacked along the b axis, forming molecular sheets parallel to the ab plane. The crystal structure is further stabilized by weak C-HÁ Á Á interactions and short CÁ Á ÁO [3.376 (2) Å ] contacts. Related literature

In the title compound, C21H24O3, the enone moiety adopts an s-cis conformation and the dihedral angle between the benzene rings is 12.89 (6)°. The hex­yloxy tail adopts an extended conformation. In the crystal, inversion dimers are linked by pairs of O—H⋯O hydrogen bonds and pairs of C—H⋯O inter­actions, forming two R 2 2(7) and one R 2 2(10) loops. The dimers are then arranged into sheets lying parallel to (201) and weak C—H⋯π inter­actions consolidate the packing.