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 İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 69
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1107/s1600536813010374
  • Dergi Adı: ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS

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.