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Preparation and crystal structure of a trihydrate of paracetamol

✍ Scribed by Pamela A. McGregor; David R. Allan; Simon Parsons; Colin R. Pulham

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
76 KB
Volume
91
Category
Article
ISSN
0022-3549

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✦ Synopsis

This work reports the preparation and crystal structure of a trihydrate of paracetamol. Crystals were grown by slow cooling of an aqueous solution of paracetamol to 08C. Single-crystal X-ray diffraction shows that the trihydrate crystallizes in the orthorhombic crystal system, space group Pbca, Z ¼ 8, a ¼ 7.3324( 16), b ¼ 12.590(3), c ¼ 22.636(6) A ˚, V ¼ 2089.7(9) A ˚3. The crystals of the trihydrate dehydrate rapidly at 208C to give anhydrous paracetamol as its monoclinic form.

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