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Alloxan under pressure–squeezing an extremely dense molecular crystal structure

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Abstract

The crystal structure of the small organic molecule, alloxan, has been explored using high-pressure neutron diffraction; its already efficiently-packed structure provides a ‘chemical head-start’ on the pressure experiment. At the highest pressure measured, alloxan reaches a density of 2.36 g cm−3—unprecedented for a C, H(D), N, O-containing organic material of appreciable molecular weight. Its crystal structure is stable until ca. 6.5 GPa above which the sample starts to undergo amorphisation.

Graphical abstract: Alloxan under pressure–squeezing an extremely dense molecular crystal structure

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Article information


Submitted
03 Apr 2020
Accepted
01 May 2020
First published
01 May 2020

Chem. Commun., 2020, Advance Article
Article type
Communication

Alloxan under pressure–squeezing an extremely dense molecular crystal structure

N. P. Funnell, C. L. Bull, C. J. Ridley, S. Parsons and J. P. Tellam, Chem. Commun., 2020, Advance Article , DOI: 10.1039/D0CC02418J

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