Received 22 April 2010
In the title molecular salt, C18H21N2O4+·NO3-, the dihedral angle between the two pyridine rings is 61.24 (8)°. In the crystal, the cation and anion are linked by intermolecular N-HO hydrogen bonds.
Data collection: APEX2 (Bruker, 2004); cell refinement: SAINT-Plus (Bruker, 2001); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5413 ).
Bruker (2001). SAINT-Plus and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2004). APEX2. Bruker AXS Inc., Madison, Wisconsin, USA.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Zhang, X. T., Lu, C. Z., Zhang, Q. Z., Lu, S. F., Yang, W. B., Liu, J. C. & Zhuang, H. H. (2003). Eur. J. Inorg. Chem. pp. 1181-1185.