Received 22 October 2013
In the structure of the title complex, [Cs(C8H4Cl3O2)(H2O)]n, the caesium salt of the commercial herbicide fenac [(2,3,6-trichlorophenyl)acetic acid], the irregular eight-coordination about Cs+ comprises a bidentate O:Cl-chelate interaction involving a carboxylate-O atom and an ortho-related ring-substituted Cl atom, which is also bridging, a triple-bridging carboxylate-O atom and a bridging water molecule. A two-dimensional polymer is generated, lying parallel to (100), within which there are water-carboxylate O-HO hydrogen-bonding interactions.
For background information on the herbicide fenac, see: O'Neil (2001). For the structure of fenac, see: White et al. (1979). For examples of caesium complexes involving coordinating carbon-bound Cl, see: Levitskaia et al. (2000); Smith (2013).
Data collection: CrysAlis PRO (Agilent, 2012); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SIR92 (Altomare et al., 1993); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008) within WinGX (Farrugia, 2012); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: PLATON.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2781 ).
The author acknowledges financial support from the Science and Engineering Faculty and the University Library, Queensland University of Technology.
Agilent (2012). CrysAlis PRO. Agilent Technologies Ltd., Yarnton, England.
Altomare, A., Cascarano, G., Giacovazzo, C. & Guagliardi, A. (1993). J. Appl. Cryst. 26, 343-350.
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.
Levitskaia, T. G., Bryan, J. C., Sachleben, R. A., Lamb, J. D. & Moyer, B. A. (2000). J. Am. Chem. Soc. 122, 554-562.
O'Neil, M. J. (2001). Editor. The Merck Index, 13th ed., p. 360. Whitehouse Station, NJ, USA: Merck & Co. Inc.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Smith, G. (2013). Acta Cryst. E69, m22-m23.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.
White, A. H., Raston, C. L., Kennard, C. H. L. & Smith, G. (1979). Cryst. Struct. Commun. 8, 63-67.