title: 5,11,17,23-Tetra-tert-butyl-25,26,27,28-tetra-kis[2-(2-chloro-ethoxy)eth-oxy]-2,8,14,20-tetra-sulfonyl-calix[4]arene.
abstract: Mol-ecules of the title compound, C(56)H(76)Cl(4)O(16)S(4), have crystallographic C(2) symmetry and adopt a 1,3-alternate conformation where the four -OCH(2)CH(2)OCH(2)CH(2)Cl groups are located alternately above and below the virtual plane (R) defined by the four bridging S atoms. The dihedral angles between the plane (R) and the phenolic rings are 72.85 (7) and 74.57 (7)°. An unusual 24-membered macrocyclic ring is formed in the crystal structure with an array of eight intra-molecular C-H⋯O hydrogen bonds between the ether arm H atoms and the sulfonyl O atoms. In the supra-molecular structure, the mol-ecular components are linked into infinite zigzag one-dimensional chains by a combination of four inter-molecular C-H⋯O hydrogen bonds, forming R(2) (2)(13), R(2) (2)(16), R(2) (2)(21) and R(2) (2)(26) ring motifs. These chains are augmented into a wave-like two-dimensional network by weak C⋯O inter-actions. One tert-butyl group shows rotational disorder, and one CH(2)CH(2)Cl group is disordered over two orientations; the site-occupation factors are 0.756 (6) and 0.244 (6) for the two tert-butyl groups, and 0.808 (3) and 0.192 (3) for the two CH(2)CH(2)Cl units.
authors.affiliation: Department of Chemistry, Shandong Normal University, Jinan 250014, People's Republic of China.
authors.forename: Ling
authors.initials: L
authors.lastname: Hu
authors.forename: Yang
authors.initials: Y
authors.lastname: Liu
authors.forename: Jiang-Ping
authors.initials: JP
authors.lastname: Ma
authors.forename: Dian-Shun
authors.initials: DS
authors.lastname: Guo