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Solution-mediated and single-crystal to single-crystal transformations of cucurbit[6]uril host–guest complexes with dopamine

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Abstract

Host–guest complexation between cucurbit[6]uril and dopamine results in concomitant crystallization of two morphologically distinct supramolecular isomers. Form I appears as prismatic crystals and crystallizes in the P212121 space group. Form II appears as needles and crystallizes in the R[3 with combining macron] space group. Form I is unstable in solution and spontaneously converts into form II. Additionally, form II undergoes single-crystal to single-crystal dehydration at room temperature mediated by an alteration of the host–guest hydrogen bonding pattern and collective reorganization of dopamine guest molecules.

Graphical abstract: Solution-mediated and single-crystal to single-crystal transformations of cucurbit[6]uril host–guest complexes with dopamine

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Submitted
04 Nov 2019
Accepted
19 Dec 2019
First published
20 Dec 2019

CrystEngComm, 2020, Advance Article
Article type
Communication

Solution-mediated and single-crystal to single-crystal transformations of cucurbit[6]uril host–guest complexes with dopamine

O. Danylyuk, M. Worzakowska, J. Osypiuk-Tomasik, V. Sashuk and K. Kedra-Krolik, CrystEngComm, 2020, Advance Article , DOI: 10.1039/C9CE01743G

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