Pairwise-Interlocked Chains in 4,4'-Sulfonyldiphenol-2,2'-Bipyridyl (1/1)

In the hydrogen-bonded structure of the title complex, O₂S(C₆H₄OH)₂.C₁₀H₈N₂ or C₁₂H₁₀O₄S.C₁₀H₈N₂, the bis-phenol molecules are linked into C(8) chains by means of O-H...O=S hydrogen bonds and the 2,2'-bipyridyl units, which act as single acceptors only, are pendent from these chains by means of O-H...N hydrogen bonds. Pairs of these chains, related by centres of inversion, are mutually interlocked via their pendent arms.

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