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5,11,17,23-Tetra-tert-butyl-25,26,27,28-tetramethoxycalix[4]arene tetrahydrofuran solvate

✍ Scribed by Fischer, Conrad ;Gruber, Tobias ;Seichter, Wilhelm ;Weber, Edwin

Publisher
International Union of Crystallography
Year
2007
Tongue
English
Weight
802 KB
Volume
63
Category
Article
ISSN
1600-5368

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✦ Synopsis

The asymmetric unit of the title compound, C 44 H 64 O 4 ÁC 4 H 8 O, comprises two crystallographically independent calixarene molecules, which display a partial cone conformation, and two tetrahydrofuran molecules. The crystal packing is stabilized by C-HÁ Á Á contacts involving the methoxy groups, while the solvent molecules are located in voids between the calixarene molecules. Two of the tert-butyl residues of each calixarene molecule are disordered over two positions [0.74/0.26 (ring B), 0.71/0.29 (ring C), 0.77/0.23 (ring C 0 ), 0.67/0.33 (ring D 0 )], resulting in bond distances that deviate from ideal values.

📜 SIMILAR VOLUMES

5,11,17,23-Tetra-tert-butyl-25,26,27,28-
5,11,17,23-Tetra-tert-butyl-25,26,27,28-tetra­pentoxycalix[4]arene
✍ Brusko, Vasiliy ;Böhmer, Volker ;Bolte, Michael 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 225 KB

The molecule of the title compound, C 64 H 96 O 4 , adopts the typical pinched-cone conformation. The dihedral angles between the reference plane (defined by the C atoms of the methylene bridges) and the benzene rings are 86.88 (4), 136.64 (5), 87.22 (4) and 133.99 (4) .

26,28-Diall­yloxy-5,11,17,23-tetra-tert-
26,28-Diall­yloxy-5,11,17,23-tetra-tert-butyl-25,27-bis­(cyano­meth­oxy)calix[4]arene in the partial cone conformation
✍ Dordea, Crenguta ;Böhmer, Volker ;Bolte, Michael 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 262 KB

The title compound, C 54 H 66 N 2 O 4 , crystallizes with two molecules in the asymmetric unit. Both adopt the typical partial cone conformation which was also found for 26,28-diallyloxy-5,17-di-tert-butyl-25,27-bis(cyanomethoxy)-11,23-dinitrocalix[4]arene [Danila, Bo ¨hmer & Bolte (2005). Org. Biom