Bis(cyanido-κC)bis­(cyclo­hexyl­amine-κN)mercury(II)

Ejaz; Khan, I.U.; Harrison, W.T.A.

doi:10.1107/S1600536810001042

Volume 66
Part 2
Page m238
February 2010

Received 4 January 2010
Accepted 8 January 2010
Online 30 January 2010

Key indicators
Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.038 Å
R = 0.061
wR = 0.193
Data-to-parameter ratio = 19.7
Details

Bis(cyanido-C)bis(cyclohexylamine-N)mercury(II)

Ejaz,^a Islam Ullah Khan ^a ^* and William T. A. Harrison ^b

^aMaterials Chemistry Laboratory, Department of Chemistry, GC University, Lahore 54000, Pakistan, and ^bDepartment of Chemistry, University of Aberdeen, Meston Walk, Aberdeen AB24 3UE, Scotland
Correspondence e-mail: iuklodhi@yahoo.com

In the title compound, [Hg(CN)₂(C₆H₁₃N)₂], the Hg^II ion adopts an extremely distorted HgC₂N₂ tetrahedral coordination. The crystal packing is influenced by weak N-HN hydrogen bonds between the amino groups and the cyanide N atoms, resulting in chains of molecules propagating in [110]. Both cyclohexylamine molecules adopt chair conformations.

Related literature

For related structures, see: Ejaz et al. (2009); Cingolani et al. (1987).

Experimental

Crystal data

[Hg(CN)₂(C₆H₁₃N)₂]
M_r = 450.98
Triclinic, $[P \overline 1]$
a = 7.9283 (4) Å
b = 9.1791 (5) Å
c = 12.2722 (6) Å
= 93.972 (3)°
= 99.179 (3)°
= 97.258 (3)°
V = 870.95 (8) Å³
Z = 2
Mo K radiation
= 8.83 mm^-1
T = 293 K
0.31 × 0.23 × 0.15 mm

Data collection

Bruker Kappa APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2007) T_min = 0.171, T_max = 0.351
16082 measured reflections
3385 independent reflections
2830 reflections with I > 2(I)
R_int = 0.041

Refinement

R[F² > 2(F²)] = 0.061
wR(F²) = 0.193
S = 1.10
3385 reflections
172 parameters
H-atom parameters constrained
_max = 3.17 e Å^-3
_min = -1.98 e Å^-3

Table 1
Selected geometric parameters (Å, °)

Hg1-C13	2.076 (17)
Hg1-C14	2.084 (17)
Hg1-N2	2.404 (12)
Hg1-N1	2.426 (14)

C13-Hg1-C14	145.6 (7)
C13-Hg1-N2	100.1 (6)
C14-Hg1-N2	107.0 (7)
C13-Hg1-N1	101.5 (6)
C14-Hg1-N1	102.3 (7)
N2-Hg1-N1	83.4 (5)

Table 2
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
N1-H2N3ⁱ	0.90	2.37	3.21 (2)	155
N2-H3N3ⁱ	0.90	2.48	3.31 (2)	154
N2-H4N4ⁱⁱ	0.90	2.37	3.22 (2)	157
Symmetry codes: (i) -x, -y, -z+1; (ii) -x+1, -y+1, -z+1.

Data collection: APEX2 (Bruker, 2007); cell refinement: SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2295 ).

Acknowledgements

IUK thanks the Higher Education Commission of Pakistan for its financial support under the project `Strengthening of Materials Chemistry Laboratory at GCUL'.

References

Bruker (2007). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Cingolani, A., Lorenzotti, A., Lobbia, G. G., Leonesi, D., Bonati, F. & Bovio, B. (1987). Inorg. Chim. Acta, 132, 167-176.
Ejaz, Sahin, O. & Khan, I. U. (2009). Acta Cryst. E65, m1457.
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.

metal-organic compounds