Acta Crystallographica Section E (Apr 2008)

Partial cone conformer of 25,27-bis[(methoxycarbonyl)methoxy]-26,28-dipropoxycalix[4]arene

  • Dian-Shun Guo,
  • Jian-Ping Ma,
  • Xiao-Ling Zhang,
  • Mei Zhao,
  • Guo-Zhi Zhang

DOI
https://doi.org/10.1107/S1600536808006843
Journal volume & issue
Vol. 64, no. 4
pp. o712 – o712

Abstract

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Molecules of the title compound, C40H44O8, adopt a partial cone conformation. The dihedral angles between the planes of the aromatic rings and the mean plane through the methylene C atoms bridging the aromatic rings are 35.74 (7), 85.86 (5), 87.77 (4) and 89.95 (5)°. Two opposite aryl rings are approximately parallel to each other; the others are at an interplanar angle of 52.41 (6)°. Intra- and intermolecular C—H...O hydrogen bonds stabilize the molecular conformation and the crystal packing. Two C atoms of one propoxy chain are disordered over two positions; the site occupancy factors are ca 0.66 and 0.34.