Download citation
Download citation

link to html
The title compound, C7H6OS, crystallizes with two similar mol­ecules, 1 and 2, in the asymmetric unit. Both mol­ecules are essentially planar with r.m.s. deviations of 0.0193 and 0.0107 Å for the planes through the nine non-H atoms of mol­ecules 1 and 2, respectively. The thio­phene and 4,5-dihydro­cyclo­penta­dienone rings are inclined at 2.40 (13)° in 1 and 0.64 (13)° in 2. In the crystal structure π–π [3.6542 (17) Å] and C—H...π contacts stack the mol­ecules into columns in an inverse fashion along the b axis. An extensive series of C—H...O hydrogen bonds links the columns, generating an extended network structure.

Download citation
Download citation

link to html
The title mol­ecule, C14H14O4, lies on a twofold rotation axis that bis­ects the central benzene ring, with only one half-mol­ecule in the asymmetric unit. The pyran­one systems adopt distorted twist- boat conformations, with the two methyl­ene C atoms displaced by 0.537 (1) and 0.163 (2) Å from the best-fit plane through the remaining five C and O atoms (r.m.s. deviation = 0.073 Å). In the crystal, bifurcated C—H...(O,O) hydrogen bonds link pairs of adjacent mol­ecules in an obverse fashion, stacking mol­ecules along c. These contacts are further stabilized by very weak π–π inter­actions between adjacent benzene rings with centroid–centroid distances of 4.1951 (4) Å. Additional C—H...O contacts link these stacks, giving a three-dimensional network.

Download citation
Download citation

link to html
The title compound, C11H12O3, is essentially planar, with an r.m.s. deviation of 0.179 Å from the mean plane through the 14 non-H atoms in the mol­ecule. The benzene ring and the pyranone mean plane are inclined at 13.12 (6)° to one another and the pyran­one ring adopts a flattened chair conformation. In the crystal, O—H...O hydrogen bonds and C—H...O contacts form R12(6) rings and link mol­ecules into chains along b. Additional C—H...O contacts generate inversion dimers, with R22(8) ring motifs, and form sheets parallel to (-102) which are linked by C—H...π interactions.
Follow Acta Cryst. E
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds