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A very good host: The guest acid molecules of hydrothermally synthesized V(O)(bdc)(H2bdc)0.71 (bdc=benzenedicarboxylate) are removed to give high-quality single crystals of V(O)(bdc) (1). On absorption of guest molecules from the liquid phase, 1 undergoes crystal-to-crystal transformations (aniline: 2; thiophene: 3; acetone: 4). Furthermore, complex 1 also selectively absorbs thiophene and dimethyl sulfide from methane.
Wang et al. (Wed,) studied this question.