Host–Guest Complexes of Furan-2,5-diylbis(diphenylmethanol): Structures of the 2:1 Adducts with Dimethylformamide, Dimethyl Sulfoxide and Pyridine

In the isomorphous 2:1 adducts of furan-2,5-diylbis(diphenylmethanol), (I), with dimethylformamide, (DMF), [2(C₃₀H₂₄O₃):1(C₃H₇NO)], (II) and with dimethylsulfoxide, (DMSO), [2(C₃₀H₂₄O₃):1(C₂H₆OS)], (III), the centrosymmetric molecular aggregate consists of two molecules of the diol, linked via O-H...O hydrogen bonds involving only the hydroxyl oxygen atoms, and one molecule of either DMF or DMSO disordered across other centres of inversion and linked to the diol dimer by O-H...O hydrogen bonds. In the 2:1 adduct with pyridine, [2(C₃₀H₂₄O₃):1(C₅H₅N)], (IV), the molecular aggregate is similar in structure to those in (II) and (III), but with detailed differences in the hydrogen-bonding scheme within the diol dimer.

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