Ps. Wheatley et al., Four interpenetrating three-dimensional frameworks in the hydrogen-bonded structure of 5-hydroxyisophthalic acid-4,4 '-trimethylenedipyridine (1/1), ACT CRYST C, 55, 1999, pp. 1486-1489
The 1:1 adduct of 5-hydroxyisophthalie acid and 4,4'-trimethylenedipyridine
is a salt, [HNC5H4(CH2)(3)C5H4N](+).[HOC6H3(COOH)COO](-) (C13H15N2+. C8H5O
5-). The anions are linked into C(7) chains by means of O-H ... O hydrogen
bonds [O ... O 2.734 (2) Angstrom and O-H ... O 176 degrees], and these cha
ins are linked by the cations via O-H ... N and N-H ... O hydrogen bonds [O
... N 2.620(2) Angstrom, O-H ... N 175 degrees, N ... O 2.748(2) Angstrom
and N-H ... O 176 degrees] into four identical but independent interpenetra
ting three-dimensional frameworks.