Inclusion Complex of (S)-1,3-Butanediol with (S,S)-(+)-trans-2,3-Bis(hydroxydiphenylmethyl)-1,4-dioxaspiro[4.4]nonane

(S)-1,3-Butanediol (guest), C₄H₁₀O₂, was found to be resolved from the racemate by inclusion crystallization with (S, S)-(+)-trans-2,3-bis(hydroxydiphenylmethyl)-1,4-dioxaspiro[4.4]nonane (host), C₃₃H₃₂O₄. The unit cell of the crystal contains two pairs of host and guest molecules. There are four crystallographically independent hydrogen bonds, which form a belt-like structure along the b axis of the unit cell. The inclusion complex appears to be stabilized by hydrogen bonds and van der Waals interactions.

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