Aj. Lough et al., Centrosymmetric molecular strings in the hydrogen-bonded structure of 4,4 '-bipyridyl-4,4 '-thiodiphenol (3/2), ACT CRYST C, 55, 1999, pp. 1890-1892
The title compound, 3C(10)H(8)N(2). 2C(12)H(10)O(2)S. contains five-compone
nt molecular strings lying across centres of inversion and containing alter
nating 4,4'-bipyridyl and 4,4'-thiodiphenol units; the molecular components
are linked by just two types of O-H ... N hydrogen bonds [O ... N 2.736(2)
and 2.683(2) Angstrom; O-H ... N 162 and 169 degrees]. Each string is conn
ected to two neighbouring strings by means of aromatic pi...pi stacking int
eractions across centres of inversion to give continuous chains running par
allel to [10 (1) over bar].