Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 1 (January 2012)

organic compounds

Acta Cryst. (2012). E68, o124-o125    [ doi:10.1107/S160053681105286X ]

2-Amino­pyridinium 2-meth­oxy­carbonyl-4,6-dinitro­phenolate

D.-L. Wu and Z.-J. Xiao

Abstract: In the title mol­ecular salt, C5H7N2+·C8H5N2O7-, the 2-amino­pyridinium cation is essentially planar, with a maximium deviation of 0.015 (1) Å, while the 2-meth­oxy­carbonyl-4,6-dinitro­phenolate anion is slightly twisted away from planarity, with a maximium deviation of 0.187 (1) Å. Deprotonation of the hy­droxy O atom was observed. The cation and anion are connected by four bifurcated N-H...(O,O) hydrogen bonds, forming a mol­ecular proton-transfer adduct. The dihedral angle between the pyridinium ring in the cation and the benzene ring in the anion is 3.65 (6)°. Every adduct connects to six neighboring adducts by N-H...O and C-H...O hydrogen bonds, yielding extended layers parallel to the bc plane. There is a weak [pi]-[pi] inter­action between the benzene rings of two neighboring anions; the inter­planar spacing and the centroid-centroid separation are 3.309 (1) and 3.69 (1) Å, respectively.

htmldisplay filedownload file

Hyper-Text Markup Language (HTML) file
[ doi:10.1107/S160053681105286X/ez2268sup0.html ]
Supplementary materials

cmldisplay filedownload file

Chemical Markup Language (CML) file
[ doi:10.1107/S160053681105286X/ez2268Isup3.cml ]
Supplementary material


To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.

The download button will force most browsers to prompt for a file name to store the data on your hard disk.

Where possible, images are represented by thumbnails.

 bibliographic record in  format

  Find reference:   Volume   Page   
  Search:     From   to      Advanced search

Copyright © International Union of Crystallography
IUCr Webmaster