Picture of neon light reading 'Open'

Discover open research at Strathprints as part of International Open Access Week!

23-29 October 2017 is International Open Access Week. The Strathprints institutional repository is a digital archive of Open Access research outputs, all produced by University of Strathclyde researchers.

Explore recent world leading Open Access research content this Open Access Week from across Strathclyde's many research active faculties: Engineering, Science, Humanities, Arts & Social Sciences and Strathclyde Business School.

Explore all Strathclyde Open Access research outputs...

Cephalexin: a channel hydrate

Kennedy, A.R. and Okoth, M.O. and Sheen, D.B. and Sherwood, J.N. and Teat, S.J. and Vrcelj, R.M. (2003) Cephalexin: a channel hydrate. Acta Crystallographica Section C: Crystal Structure Communications, 59 (11). o650-o652. ISSN 0108-2701

Full text not available in this repository. Request a copy from the Strathclyde author

Abstract

The antibiotic cephalexin [systematic name: d-7-(2-amino-2-phenyl­acet­amido)-3-methyl-8-oxo-5-thia-1-aza­bi­cyclo­[4.2.0]oct-2-ene-2-carboxyl­ic acid] forms a range of isomorphic solvates, with the maximum hydration state of two water mol­ecules formed only at high relative humidities. The water content of the structure reported here (C16H17N3O4S·1.9H2O) falls just short of this configuration, having three independent cephalexin mol­ecules, one of which is disordered, and 5.72 observed water mol­ecules in the asymmetric unit. The facile nature of the cephalexin solvation/desolvation process is found to be facilitated by a complex channel structure, which allows free movement of solvent in the crystallographic a and b directions.