Tetrafluoro(aryl)sulfanylated Bicyclopentane Crystals That Self-Destruct upon Cooling DOI

Abbey N. Ragan,

Yannick Kraemer, Subash K. Chaudhary

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер 147(2), С. 1463 - 1473

Опубликована: Янв. 6, 2025

Whereas single crystals of organic compounds that respond to heat or light have been reported and studied in detail, studies on crystalline elicit an extreme mechanical response upon cooling very low temperatures are relatively rare the chemical literature. A tetrafluoro(aryl)sulfanylated bicyclopentane synthesized our laboratory was discovered exhibit such behavior; i.e., jumped forcefully disintegrated below ∼193 K. Accordingly, origin this low-temperature thermosalient effect investigated through NMR, SC-XRD, PXRD, microscopy, DSC, Raman, Brillouin experiments. To surprise, DSC experiments suggest phenomenon can neither be attributed solely a transformation nor phase transition entire material. Rather, XRD, provide evidence built-up strain released from crystal self-destruction may associated with microstructure occurs another material (i.e., impurity) crystal. This study demonstrates molecular structural changes impurity phases (which not necessarily visible by X-ray diffraction) significant impact behavior bulk Thus, role considered more heavily future mechanistic mechanically responsive crystals.

Язык: Английский

Tetrafluoro(aryl)sulfanylated Bicyclopentane Crystals That Self-Destruct upon Cooling DOI

Abbey N. Ragan,

Yannick Kraemer, Subash K. Chaudhary

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер 147(2), С. 1463 - 1473

Опубликована: Янв. 6, 2025

Whereas single crystals of organic compounds that respond to heat or light have been reported and studied in detail, studies on crystalline elicit an extreme mechanical response upon cooling very low temperatures are relatively rare the chemical literature. A tetrafluoro(aryl)sulfanylated bicyclopentane synthesized our laboratory was discovered exhibit such behavior; i.e., jumped forcefully disintegrated below ∼193 K. Accordingly, origin this low-temperature thermosalient effect investigated through NMR, SC-XRD, PXRD, microscopy, DSC, Raman, Brillouin experiments. To surprise, DSC experiments suggest phenomenon can neither be attributed solely a transformation nor phase transition entire material. Rather, XRD, provide evidence built-up strain released from crystal self-destruction may associated with microstructure occurs another material (i.e., impurity) crystal. This study demonstrates molecular structural changes impurity phases (which not necessarily visible by X-ray diffraction) significant impact behavior bulk Thus, role considered more heavily future mechanistic mechanically responsive crystals.

Язык: Английский

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