Abstract:
Cocrystallization of C-methylcalix[4]resorcinarene 1 with
4,4’-bipyridine 2 in the presence of 4-bromobiphenyl (4-brbp) yields a
molecular solid, of composition 3d.(4-brbp), [where 3d = 1.2(2)], in
which 1 assembles with 2 to form a one-dimensional hydrogen-bonded
polymer 3d that includes two copies of the biphenyl, within elliptical
cavities of dimensions similar to11 x 7 x 6 Angstrom, as guests. The
framework 3d represents a third architectural isomer of three previously
reported supramolecular isomers of the parent material 3.