title: 5,11,17,23,29,35-Hexa-tert-butyl-37,38,39,40,41,42-hexa-kis-(eth-oxy-carbonyl-meth-oxy)calix[6]arene acetonitrile disolvate.
abstract: In the title compound, C(90)H(120)O(18)·2CH(3)CN, the calix[6]arene has a 1,2,3-alternate conformation and possesses inversion symmetry. It crystallizes as an acetonitrile disolvate, with a half-mol-ecule of calix[6]arene and one mol-ecule of solvent in the asymmetric unit. In the crystal, the two solvent mol-ecules are enclosed in voids between the calix[6]arene mol-ecules. They form weak C-H⋯O hydrogen bonds involving an O atom of the lower rim substituent. The cavity of the calix[6]arene itself is enclosed by two opposite phenol rings, which are turned into the cavity due to the presence of a C-H⋯π inter-action. The calix[6]arene mol-ecule exhibits disorder of one substituent on its lower rim [occupancy ratio 0.897 (3):0.103 (3)].
authors.forename: Michaela
authors.initials: M
authors.lastname: Pojarová
authors.forename: Michal
authors.initials: M
authors.lastname: Dušek
authors.forename: Jan
authors.initials: J
authors.lastname: Budka
authors.forename: Ivana
authors.initials: I
authors.lastname: Císařová
authors.forename: Emanuel
authors.initials: E
authors.lastname: Makrlík