Acta Crystallographica Section C

Crystal Structure Communications

Volume 69, Part 10 (October 2013)


organic compounds



Acta Cryst. (2013). C69, 1152-1156    [ doi:10.1107/S0108270113020891 ]

2-Amino-5-iodo­pyridinium bromide hemihydrate and 2-amino-5-iodo­pyridinium chloride monohydrate

M. Polson, M. M. Turnbull and J. L. Wikaira

Abstract: The hydro­bromide and hydro­chloride salts of 2-amino-5-iodo­pyridine were prepared from aqueous solutions. The hydro­bromide salt, C5H6IN2+·Br-·0.5H2O, crystallizes as a hemihydrate, and exhibits hydrogen bonding and [pi]-stacking which stabilize the crystal structure. The hydro­chloride salt, C5H6IN2+·Cl-·H2O·0.375HCl, crystallized as the hydrate and exhibits similar hydrogen bonding and [pi]-stacking in the lattice. The most interesting feature of the hydrochloride salt is the presence of an additional fractional HCl molecule which introduces disorder in the location of the water molecule. The additional proton from the fractional HCl molecule is accounted for by the presence of a partial hydronium ion on one of the water sites.

Formula: C5H6IN2+·Br-·0.5H2O and C5H6IN2+·Cl-·H2O·0.375HCl

Keywords: crystal structure; 2-amino-5-iodo­pyridinium salts; hydrogen bonding; partial occupancy.


cmldisplay filedownload file

Chemical Markup Language (CML) file (2.8 kbytes)
[ doi:10.1107/S0108270113020891/yf30451sup4.cml ]
Supplementary material


Notes:

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