Issue 7, 2009

Crystal structures with a challenge: high-pressure crystallisation of ciprofloxacin sodium salts and their recovery to ambient pressure

Abstract

Two novel sodium salts of the antibiotic ciprofloxacin were crystallised at pressures of 0.25 and 0.6 GPa and subsequently recovered to ambient pressure. The structures are the first reported examples of ciprofloxacin chelating a Group IA monovalent cation. Ambient-pressure crystallisation of the same solution used for high-pressure experiments, yielded crystals of the known hexahydrate. In a parallel study, the previously unknown structure of anhydrous ciprofloxacin was determined from powder diffraction data. The structures are described and compared using the XPac method.

Graphical abstract: Crystal structures with a challenge: high-pressure crystallisation of ciprofloxacin sodium salts and their recovery to ambient pressure

Supplementary files

Article information

Article type
Paper
Submitted
22 Dec 2008
Accepted
02 Mar 2009
First published
25 Mar 2009

CrystEngComm, 2009,11, 1396-1406

Crystal structures with a challenge: high-pressure crystallisation of ciprofloxacin sodium salts and their recovery to ambient pressure

F. P. A. Fabbiani, B. Dittrich, A. J. Florence, T. Gelbrich, M. B. Hursthouse, W. F. Kuhs, N. Shankland and H. Sowa, CrystEngComm, 2009, 11, 1396 DOI: 10.1039/B822987B

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