title: 5,11,17,23-Tetra-tert-butyl-25,26,27,28-tetra-methoxy-calix[4]arene dichloro-methane hemisolvate.
abstract: In the title compound, C(48)H(64)O(4)·0.5CH(2)Cl(2), both crystallographically independent calixarene mol-ecules display a partial cone conformation. Their crystal packing is stabilized by C-H⋯π contacts involving the meth-oxy groups. The solvent mol-ecule is located inter-stitially between two calixarene units with C-H⋯Cl contacts to meth-oxy and tert-butyl groups. One tert-butyl residue of each calixarene mol-ecule is disordered over two positions (occupancies 0.60/0.40 and 0.63/0.37), resulting in bond distances that deviate from ideal values. The tetra-mer calixarene mol-ecules present models with approximate non-crystallographic C(s) symmetry.
authors.affiliation: Institut für Organische Chemie, TU Bergakademie Freiberg, Leipziger Strasse 29, D-09596 Freiberg/Sachsen, Germany.
authors.forename: Conrad
authors.initials: C
authors.lastname: Fischer
authors.forename: Tobias
authors.initials: T
authors.lastname: Gruber
authors.forename: Wilhelm
authors.initials: W
authors.lastname: Seichter
authors.forename: Diana
authors.initials: D
authors.lastname: Schindler
authors.forename: Edwin
authors.initials: E
authors.lastname: Weber