14-Bromo-12-chloro-2,16-dioxapentacyclo[7.7.5.0(1,21).0(3,8).0(10,15)] henicosa-3(8), 10,12,14-tetraene-7,20-dione


Kennedy A. R., AKKURT M., Mohamed S. K., Abdelhamid A. A., Marzouk A. A. E.

ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.69, 2013 (ESCI) identifier identifier

Özet

In the title compound, C19H16BrClO4, both the fused xanthene rings and one of the cyclohexane rings adopt envelope conformations, while the other cyclohexane ring is in a chair conformation. In the crystal, molecules are linked by CH center dot center dot center dot O hydrogen bonds, forming infinite chains running along [101] incorporating R-2(2) (16) ring motifs. In addition, C-H center dot center dot center dot pi interactions and weak pi-pi stacking interactions [centroid-centroid distance = 3.768 (3) angstrom] help to consolidate the packing.