Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2012 Oct 1;68(Pt 10):o2983-4.
doi: 10.1107/S1600536812039578. Epub 2012 Sep 22.

2,6-Dimethyl-pyridinium bromide

Salim F Haddad  1 , Basem F Ali, Rawhi Al-Far
Affiliations

2,6-Dimethyl-pyridinium bromide

Salim F Haddad et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The asymmetric unit of the title salt, C(7)H(10)N(+)·Br(-), comprises two 2,6-dimethyl-pyridinium cations and two bromide anions. One cation and one anion are situated in general positions, while the other cation and the other anion lie on a crystallographic mirror plane parallel to (010). Each pair of ions inter-act via N-H⋯Br and C-H⋯Br hydrogen bonding, generating motifs depending on the cation and anion involved. Thus, the cation and the anion on the mirror plane generate infinite chains along the c axis, while the other ionic pair leads to sheets parallel to the ac plane. In the overall crystal packing, both motifs alternate along the b axis, with a single layer of the chain motif sandwiched between two double layers of the sheet motif. The sheets and chains are further connected via aryl π-π inter-actions [centroid-centroid distances = 3.690 (2) and 3.714 (2) Å], giving a three-dimensional network.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
The asymmetric unit of the title compound. Displacement ellipsoids are drawn at the 30% probability level.
Fig. 2.
Fig. 2.
Partial view of the crystal packing showing the sheet motifs parallel to (010). Hydrogen bonds are shown as dashed lines.
Fig. 3.
Fig. 3.
Another view of the crystal packing showing the infinite chains runnig along the c axis, with the involved N–H···Br and C–H···Br interactions showed as dashed lines.
Fig. 4.
Fig. 4.
A view of the overall crystal packing showing single layers of the chain motif sandwiched between double layers of the sheet type motif.
See this image and copyright information in PMC

References

    1. Agilent (2011). CrysAlis PRO Agilent Technologies, Yarnton, Oxfordshire, England.
    1. Ahmadi, R., Dehghan, L., Amani, V. & Khavasi, H. R. (2008). Acta Cryst. E64, m1237. - PMC - PubMed
    1. Allen, F. H., Hoy, V. J., Howard, J. A. K., Thalladi, V. R., Desiraju, G. R., Wilson, C. C. & McIntyre, G. J. (1997). J. Am. Chem. Soc. 119, 3477–3480.
    1. Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19.
    1. Amani, V., Rahimi, R. & Khavasi, H. R. (2008). Acta Cryst. E64, m1143–m1144. - PMC - PubMed