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Volume 68 
Part 12 
Page m1499  
December 2012  

Received 6 November 2012
Accepted 13 November 2012
Online 17 November 2012

Key indicators
Single-crystal X-ray study
T = 293 K
Mean [sigma](C-C) = 0.014 Å
R = 0.050
wR = 0.102
Data-to-parameter ratio = 29.5
Details
Open access

Bis(2,4-dimethylpyridinium) tetrabromidomercurate(II)

aFaculty of Science and IT, Al-Balqa'a Applied University, Salt, Jordan,bDepartment of Chemistry, The University of Jordan, Amman 11942, Jordan, and cDepartment of Chemistry, Al al-Bayt University, Mafraq 25113, Jordan
Correspondence e-mail: bfali@aabu.edu.jo

The asymmetric unit of the title compound, (C7H10N)2[HgBr4], consists of one cation and one half-anion, bisected by a twofold rotation axis passing through the metal atom. The anion exhibits a distorted tetrahedral arrangement about the HgII atom. In the crystal, the cations and anions are linked by N-H...Br hydrogen-bonding interactions along [010]. Cation-cation [pi]-[pi] stacking and Br...Br intermolecular interactions are absent.

Related literature

For intermolecular interactions, see: Desiraju (1997[Desiraju, G. R. (1997). Chem. Commun. pp. 1475-1482.]). For related structures, see: Al-Far & Ali (2007[Al-Far, R. & Ali, B. F. (2007). Acta Cryst. C63, m137-m139.]); Ali & Al-Far (2007[Ali, B. F. & Al-Far, R. (2007). Acta Cryst. C63, m451-m453.]); Ali et al. (2008[Ali, B. F., Al-Far, R. H. & Haddad, S. F. (2008). Acta Cryst. E64, m751-m752.]). For structures containing the [HgBr4]2- anion, see: Gowda et al. (2009[Gowda, B. T., Foro, S., Terao, H. & Fuess, H. (2009). Acta Cryst. E65, m946.]); Li et al. (2009[Li, S.-J., Chen, A.-H., Zheng, Z.-Y., Liu, S.-W. & Liu, Q.-X. (2009). Acta Cryst. E65, m1652.]). For standard bond lengths in the cation, see: Allen et al. (1987[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.]).

[Scheme 1]

Experimental

Crystal data
  • (C7H10N)2[HgBr4]

  • Mr = 736.51

  • Monoclinic, C 2/c

  • a = 20.022 (5) Å

  • b = 7.7985 (9) Å

  • c = 17.651 (3) Å

  • [beta] = 129.12 (3)°

  • V = 2138.1 (11) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 14.67 mm-1

  • T = 293 K

  • 0.44 × 0.40 × 0.18 mm

Data collection
  • Agilent Xcalibur Eos diffractometer

  • Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011[Agilent (2011). CrysAlis PRO. Agilent Technologies, Yarnton, England.]) Tmin = 0.002, Tmax = 0.072

  • 5366 measured reflections

  • 2895 independent reflections

  • 1454 reflections with I > 2[sigma](I)

  • Rint = 0.036

Refinement
  • R[F2 > 2[sigma](F2)] = 0.050

  • wR(F2) = 0.102

  • S = 1.01

  • 2895 reflections

  • 98 parameters

  • H-atom parameters constrained

  • [Delta][rho]max = 1.45 e Å-3

  • [Delta][rho]min = -1.54 e Å-3

Table 1
Selected bond lengths (Å)

Hg1-Br1 2.5767 (11)
Hg1-Br2 2.6160 (11)

Table 2
Hydrogen-bond geometry (Å, °)

D-H...A D-H H...A D...A D-H...A
N1-H1A...Br2i 0.86 2.45 3.286 (7) 163
Symmetry code: (i) [x, -y, z+{\script{1\over 2}}].

Data collection: CrysAlis PRO (Agilent, 2011[Agilent (2011). CrysAlis PRO. Agilent Technologies, Yarnton, England.]); cell refinement: CrysAlis PRO; data reduction: CrysAlis PRO; program(s) used to solve structure: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BX2429 ).


Acknowledgements

The structure was determined at the Hamdi Mango Center for Scientific Research at the University of Jordan, Amman, Jordan. RA-F would like to thank Al-Balqa'a Applied University (Jordan) for financial support (sabbatical leave).

References

Agilent (2011). CrysAlis PRO. Agilent Technologies, Yarnton, England.
Al-Far, R. & Ali, B. F. (2007). Acta Cryst. C63, m137-m139.  [CSD] [CrossRef] [details]
Ali, B. F. & Al-Far, R. (2007). Acta Cryst. C63, m451-m453.  [CSD] [CrossRef] [details]
Ali, B. F., Al-Far, R. H. & Haddad, S. F. (2008). Acta Cryst. E64, m751-m752.  [CSD] [CrossRef] [details]
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.
Desiraju, G. R. (1997). Chem. Commun. pp. 1475-1482.  [CrossRef]
Gowda, B. T., Foro, S., Terao, H. & Fuess, H. (2009). Acta Cryst. E65, m946.  [CSD] [CrossRef] [details]
Li, S.-J., Chen, A.-H., Zheng, Z.-Y., Liu, S.-W. & Liu, Q.-X. (2009). Acta Cryst. E65, m1652.  [CSD] [CrossRef] [details]
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]


Acta Cryst (2012). E68, m1499  [ doi:10.1107/S1600536812046788 ]

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