4-Hy­droxy-3-[(4-hy­droxy-2-oxo-2H-3-chromen­yl)(3-thien­yl)meth­yl]-2H-chromen-2-one

摘要

The whole mol­ecule of the title compound, C23H14O6S, is disordered over two sets of sites with refined occupancies of 0.8733 (12):0.1267 (12). The dihedral angle between the mean planes through the chromene ring systems is 56.31 (5) and 55.2 (3)° for the major and minor components, respectively. In both components, a pair of intra­molecular O—H⋯O inter­actions generate rings of S(8) graph-set motif. In the crystal, the mol­ecules are linked by inter­molecular C—H⋯O inter­actions, forming chains along the b axis. The structure is further stabilized by π–π inter­actions with centroid–centroid distances of 3.594 (2) and 3.608 (5) Å.