Received 25 May 2009
The 5-chloro-8-hydroxyquinolinium cation in the the title ion pair, C9H7ClNO+·NO3-, is approximately coplanar with the nitrate anion [dihedral angle = 16.1 (1)°]. Two ion pairs are hydrogen bonded (2 × O-HO and 2 × N-HO) about a center of inversion, generating an R44(14) ring.
The 8-hydroxyquinolinium cation has been isolated as a number of salts; for the 8-hydroxyquinolinium chloride hydrate, see: Skakle et al. (2006). For the crystal structure of 5-chloro-8-hydroxyquinoline, see: Banerjee & Saha (1986).
Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT (Bruker, 2008); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: publCIF (Westrip, 2009).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: TK2465 ).
I thank the University of Malaya for supporting this study.
Banerjee, T. & Saha, N. N. (1986). Acta Cryst. C42, 1408-1411.
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Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Skakle, J. M. S., Wardell, J. L. & Wardell, S. M. S. V. (2006). Acta Cryst. C62, o312-o314.
Westrip, S. P. (2009). publCIF. In preparation.