RESUMO
In the title compound, C15H11BrO3, the dihedral angle between the benzene rings is 72.59â (6)°. In the crystal, pairs of C-Hâ¯π contacts form inversion dimers. Additional C-Hâ¯O hydrogen bonds generate R2(1)(6) ring motifs and stack these dimers along the b axis. Short inter-molecular Brâ¯O contacts of 3.254â (3)â Å are also observed and link the stacks into a three-dimensional network.
RESUMO
In the title compound, C15H16ClNO2S2, the 2H-chromene ring system is nearly planar, with a maximum deviation of 0.023â (2)â Å. In the crystal, C-Hâ¯O hydrogen bonds give R 2 (1)(7) motifs, which generate [100] chains. C-Hâ¯π and π-π inter-actions between chromene moieties [shortest ring centroid-centroid distance = 3.6199â (13)â Å] consolidate the packing.
RESUMO
In the title compound, C(23)H(26)FN(3)O(6)S, the two terminal aromatic rings form a dihedral angle of 49.26â (12)°. The cyclo-hexane ring adopts a chair conformation and the five-membered ring is essentially planar, with a maximum deviation from planarity of 0.0456â (19)â Å. The dihedral angles between the five-membered ring and the meth-oxy-benzene and fluoro-benzene rings are 33.56â (11) and 81.94â (12)°, respectively. The crystal structure displays N-Hâ¯O hydrogen bonds as well as weak inter-molecular C-Hâ¯O inter-actions.
RESUMO
The title compound, C(19)H(20)O(4), was synthesized via a Fries rearrangement of hydr-oxy benzophenone. The dihedral angle between the least-squares planes of the two benzene rings is 69.04â (11)°. The mol-ecular structure displays an intra-molecular non-classical C-Hâ¯O hydrogen bond.