3,3-Dimethyl-1,1-(propane-1,3-di­yl)diimidazol-1-ium tetra­bromido­cadmate(II)

Zhuang, L.; Zheng, C.; Wang, C.; Yuan, A.; Wang, G.

doi:10.1107/S1600536810031211

Volume 66
Part 9
Pages m1080-m1081
September 2010

Received 14 July 2010
Accepted 4 August 2010
Online 11 August 2010

Key indicators
Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.019 Å
R = 0.062
wR = 0.144
Data-to-parameter ratio = 18.5
Details

3,3-Dimethyl-1,1-(propane-1,3-diyl)diimidazol-1-ium tetrabromidocadmate(II)

Ling-hua Zhuang,^a Chun-ling Zheng,^b Chang-sheng Wang,^b Ai-lin Yuan ^b and Guo-wei Wang ^b ^*

^aDepartment of Applied Chemistry, College of Science, Nanjing University of Technology, Nanjing 210009, People's Republic of China, and ^bDepartment of Light Chemical Engineering, College of Food Science and Light Industry, Nanjing University of Technology, Nanjing 210009, People's Republic of China
Correspondence e-mail: kingwell2004@sina.com.cn

The title compound, (C₁₁H₁₈N₄)[CdBr₄], was prepared by an anion exchange. The dihedral angle between the two planar imidazolium rings in the cation is 74.4 (4)°. The crystal packing is stabilized by weak intermolecular C-HBr hydrogen bonds between the cation and the tetrahedral anion, building up a three-dimensionnal network.

Related literature

For the properties and applications of ionic liquids, see: Welton (1999); Nicholas et al. (2004); Yu et al. (2007). For dicationic ionic liquids, see: Jared et al. (2005); Liang et al. (2008); Song et al. (2009); Geng et al. (2010). For related structures, see: Jared et al. (2005); Liang et al. (2008). For bond-length data, see: Allen et al. (1987).

Experimental

Crystal data

(C₁₁H₁₈N₄)[CdBr₄]
M_r = 638.33
Monoclinic, P 2₁ /c
a = 8.5050 (17) Å
b = 15.876 (3) Å
c = 13.836 (3) Å
= 96.07 (3)°
V = 1857.7 (6) Å³
Z = 4
Mo K radiation
= 9.78 mm^-1
T = 293 K
0.20 × 0.10 × 0.10 mm

Data collection

Enraf-Nonius CAD-4 diffractometer
Absorption correction: scan (North et al., 1968) T_min = 0.245, T_max = 0.442
3383 measured reflections
3383 independent reflections
1874 reflections with I > 2(I)
3 standard reflections every 200 reflections intensity decay: 1%

Refinement

R[F² > 2(F²)] = 0.062
wR(F²) = 0.144
S = 0.95
3383 reflections
183 parameters
H-atom parameters constrained
_max = 0.72 e Å^-3
_min = -0.77 e Å^-3

Table 1
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C7-H7ABr2	0.97	2.67	3.515 (15)	145
C1-H1CBr3ⁱ	0.96	2.93	3.819 (13)	155
C4-H4ABr3ⁱⁱ	0.93	2.70	3.606 (11)	164
C5-H5BBr3ⁱⁱⁱ	0.97	2.84	3.765 (11)	161
C8-H8ABr4^iv	0.93	2.86	3.699 (12)	151
Symmetry codes: (i) -x+1, -y, -z+1; (ii) x-1, y, z; (iii) $[x-1, -y+{\script{1\over 2}}, z-{\script{1\over 2}}]$ ; (iv) $[-x+1, y+{\script{1\over 2}}, -z+{\script{3\over 2}}]$ .

Data collection: CAD-4 Software (Enraf-Nonius, 1989); cell refinement: CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEPIII (Burnett & Johnson, 1996), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: DN2593 ).

Acknowledgements

This work was supported by the Foundation for Young Teachers Scholarship of Nanjing University of Technology, Jiangsu, China (grant No. 39729005). The authors also thank the Centre of Testing and Analysis, Nanjing University, for the data collection.

References

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metal-organic compounds