title: 2,4-dihydroxy-1,3-bis(methoxycarbonylmethoxy)calix[4]arene and 1,3-bis(ethoxycarbonylmethoxy)-2,4-dihydroxycalix[4]arene chloroform solvate.
abstract: The two title calix[4]arene compounds, C34H32O8, (I), and C36H36O8*CH3Cl, (II), respectively, which differ only in the size of the alkyl function on the pendant ester group, are compared. Compound (I) forms a novel supramolecular array, whilst (II) fails to do so due to accommodating a chloroform guest molecule in the lower-rim cavity.
authors.affiliation: Department of Chemistry, University of Southampton, Southampton SO17 1BJ, England. s.j.coles@soton.ac.uk
authors.forename: Simon J
authors.initials: SJ
authors.lastname: Coles
authors.forename: Christopher W
authors.initials: CW
authors.lastname: Hall
authors.forename: Michael B
authors.initials: MB
authors.lastname: Hursthouse