Abstract
The inclusion of small molecules, such as amines, into hydrogen-bonded assemblies is an important task for a selective enclathration of substance mixtures. Here we report on a convenient method to entrap a simple monoamine by using the acidic nature of a silanol hydroxyl group. In detail, the co-crystallisation of triphenylsilanol and pyrrolidine leading to a defined host–guest compound (1) with a 4:1 stoichiometric composition is presented. The addition of acetic acid to a mixture of the silanol and the amine resulted in the formation of co-crystals (2) comprising the three substances in a 1:1:1 ratio. The structural features, especially in terms of hydrogen-bonding interactions are discussed for both compounds.
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