Tenfold Interpenetration of Giant Hexagonal R1212(126) Nets in the Hydrogen-Bonded Structure of 1,1,1-Tris(4-hydroxyphenyl)ethane–4,4'-Bipyridyl (2/3)

In the 2:3 adduct of 1,1,1-tris(4-hydroxyphenyl)ethane [or ethane-1,1,1-triyltris(4-phenol)] and 4,4′-bipyridyl, 2C20H18O3.3C10H8N2, the components are linked by O—H⋯N hydrogen bonds [N⋯O 2.780 (2), 2.745 (2) and 2.731 (2) A] into puckered two-dimensional nets built from giant hexagons, each involving six units of each component. There are ten such independent nets, all multiply interwoven, within the structure.