25,26,27,28-Tetrakis(3-bromobenzyloxy)calix[4]arene

25,26,27,28-Tetrakis(3-bromobenzyloxy)calix[4]arene

In the title compound, C56H44Br4O4, the calix[4]arene unit displays the 1,2-alternate conformation with crystallograpically imposed inversion symmetry. The four phenoxy rings of the calix[4]arene unit are twisted about the mean plane defined by the four methylene C atoms bridging the benzene rings,...

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Bibliographic Details
Main Authors: Eunji Lee, Suk-Hee Moon, Tae Ho Kim, Ki-Min Park
Format: Article
Language:English
Published: International Union of Crystallography 2011-07-01
Series:Acta Crystallographica Section E
Online Access:http://scripts.iucr.org/cgi-bin/paper?S1600536811022975
Description
Summary:In the title compound, C56H44Br4O4, the calix[4]arene unit displays the 1,2-alternate conformation with crystallograpically imposed inversion symmetry. The four phenoxy rings of the calix[4]arene unit are twisted about the mean plane defined by the four methylene C atoms bridging the benzene rings, with dihedral angles of 46.73 (6) and 66.11 (5)°. The dihedral angle between adjacent phenoxy rings is 74.75 (7)°. The two pendant bromophenyl rings on the same side of the calix[4]arene unit are nearly perpendicular to each other, with a dihedral angle of 72.85 (10)° due to an intramolecular C—H...π interaction. In the crystal, a Br...Br contact of 3.6350 (5) Å, an intermolecular C—H...Br hydrogen bond and an intermolecular C—H...π interaction are observed.
ISSN:1600-5368

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