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Flexible molecular materials

Stressed out crystals

Molecular crystals have recently started to shake their inflexible reputation. Now, copper(II) acetylacetonate needles have been shown to be very flexible, and their mechanical deformation has been assessed through materials constants using methods customarily reserved for non-molecular materials.

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Figure 1: Structure of bis(acetylacetonate)copper(II), Cu(acac)2.
Figure 2: Stretching and bending of the flexible needle-shaped crystals of Cu(acac)2.

dpa picture alliance / Alamy Stock Photo.

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Correspondence to Bart Kahr or Michael D. Ward.

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Kahr, B., Ward, M. Stressed out crystals. Nature Chem 10, 4–6 (2018). https://doi.org/10.1038/nchem.2913

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