Abstract
Colloidal bismuth therapeutics have been used for hundreds of years, yet remain mysterious. Here we report an X-ray pair distribution function (PDF) study of the solvolysis of bismuth disalicylate, a model for the metallodrug bismuth subsalicylate (Pepto-Bismol). This reveals catalysis by traces of water, followed by multistep cluster growth. The ratio of the two major species, {Bi9O7} and {Bi38O44}, depends on exposure to air, time, and the solvent. The solution-phase cluster structures are of significantly higher symmetry in comparison to solid-state analogues, with reduced off-center Bi3+ displacements. This explains why such "magic-size"clusters can be both stable enough to crystallize and sufficiently labile for further growth.
| Original language | English |
|---|---|
| Pages (from-to) | 16332-16336 |
| Number of pages | 5 |
| Journal | Journal of the American Chemical Society |
| Volume | 143.2021 |
| Issue number | 40 |
| Early online date | 28 Sept 2021 |
| DOIs | |
| Publication status | Published - 13 Oct 2021 |
Bibliographical note
Copyright © 2021 American Chemical SocietyUN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
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