3,3a-Dihydrocyclopenta[b]chromen-1(2H)-ones from the reaction of salicylaldehyde and 2-cyclopenten-1-one.
The two title chromene compounds, 3,3a-dihydrocyclopenta[b]chromen-1(2H)-one, C16H12O2, (I), and 2-(2-hydroxybenzylidene)-3,3a-dihydrocyclopenta[b]chromen-1(2H)-one, C19H14O3, (II), have been determined in the monoclinic space group P2(1)/n. Compound (I) is mainly stabilized by C-H...pi interactions. Compound (II) is linked into infinite one-dimensional chains with a C(3) motif via intermolecular O-H...O hydrogen bonds. The intermolecular C-H...pi and pi-pi interactions also play key roles in stabilizing the crystal packing. Two intramolecular C-H...O hydrogen bonds with S(5) motifs were detected in (II).
Huo
Fang Jun
FJ
Institute of Molecular Science, Chemical Biology and Molecular Engineering Laboratory of Education Ministry, Shanxi University, Taiyuan, Shanxi 030006, People's Republic of China.
Yin
Cai Xia
CX
Jin
Xiang Lin
XL
Yang
Pin
P
D000447:Aldehydes / Q000737:chemistry*; D001578:Benzopyrans / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003517:Cyclopentanes / Q000737:chemistry*; D006860:Hydrogen Bonding; D008958:Models, Molecular; D008968:Molecular Conformation
D000447:Aldehydes; D001578:Benzopyrans; D003517:Cyclopentanes; C013243:salicylaldehyde; C013905:cyclopentenone