2,2 '-Biphenol-1,4-diazabicyclo[2.2.2]octane (2/1), a three-dimensional framework built from O-H center dot center dot center dot O, O center dot center dot center dot N, N-H center dot center dot center dot O and C-H centerdot center dot center dot pi(arene) hydrogen bonds

In the 2:1 adduct of 2,2'-biphenol and 1,4-diazabicyclo[2.2.2]octane, 2C(12 )H(10)O(2). C6H12N2, there are eight molecules of the biphenol and four mol ecules of the amine in the asymmetric unit, and several of these components exhibit orientational disorder even at 100 K. Each biphenol unit contains an intramolecular O-H ... O hydrogen bond [O ... O range for the ordered co mponents 2.594(6) to 2.668(5) Angstrom]. Each of the amines is hydrogen bon ded to two biphenol units [O ... N range for the ordered components 2.521(7 ) to 2.594(6) Angstrom], so forming four independent three-molecule aggrega tes. These aggregates are further linked by an extensive series of C-H ...p i(arene) interactions into a continuous three-dimensional framework.