Bis[5-(pyridin-2-yl)pyrazine-2-carbo­nitrile-κ2N4,N5]silver hexa­fluorido­phosphate

Wang, Z.J.

doi:10.1107/S1600536811051403

Volume 68
Part 1
Page m5
January 2012

Received 26 November 2011
Accepted 29 November 2011
Online 3 December 2011

Key indicators
Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.004 Å
R = 0.032
wR = 0.090
Data-to-parameter ratio = 16.7
Details

Bis[5-(pyridin-2-yl)pyrazine-2-carbonitrile-²N⁴,N⁵]silver hexafluoridophosphate

Zi Jia Wang ^a ^*

^aDepartment of Chemistry, Capital Normal University, Beijing 100048, People's Republic of China
Correspondence e-mail: wanchqing@yahoo.com.cn

In the mononuclear title complex, [Ag(C₁₀H₆N₄)₂]PF₆, two [kappa] ²N,N'-chelating 5-(pyridin-2-yl)pyrazine-2-carbonitrile ligands surround the Ag^I atom, forming a distorted N₄ tetrahedral coordination geometry. The mononuclear units are interconnected through [pi] - [pi] interactions [centroid-centroid distances = 3.801 (2) and 3.979 (3) Å] and the hexafluoridophosphate anions are embedded within the interstices. C [triple bond] N [pi] interactions [Ncentroid = 3.519 (2) Å] and C-H.N hydrogen-bonding interactions also occur.

Related literature

For coordination complexes with pyridyl-based ligands, see: Boudalis et al. (2003); Dunne et al. (1997); Huang et al. (2007); Wang et al. (2009). For a related complex with 5-(2-pyridyl)pyrazine-2-carbonitrile, see: Wang et al. (2010).

Experimental

Crystal data

[Ag(C₁₀H₆N₄)₂]PF₆
M_r = 617.22
Triclinic, $[P \overline 1]$
a = 8.8989 (9) Å
b = 9.1711 (10) Å
c = 14.0804 (15) Å
= 77.023 (2)°
= 86.926 (2)°
= 84.809 (2)°
V = 1114.5 (2) Å³
Z = 2
Mo K radiation
= 1.05 mm^-1
T = 293 K
0.38 × 0.30 × 0.30 mm

Data collection

Bruker APEXII CCD area-detector diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2007) T_min = 0.861, T_max = 1.000
8106 measured reflections
5438 independent reflections
4544 reflections with I > 2(I)
R_int = 0.017

Refinement

R[F² > 2(F²)] = 0.032
wR(F²) = 0.090
S = 1.04
5438 reflections
325 parameters
H-atom parameters constrained
_max = 0.71 e Å^-3
_min = -0.37 e Å^-3

Table 1
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C11-H11AN7ⁱ	0.93	2.47	3.201 (2)	135
Symmetry code: (i) x+1, y, z.

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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BT5734 ).

Acknowledgements

The author is grateful for financial support from the Science and Technology program, Beijing Municipal Education Commission.

References

Boudalis, A. K., Dahan, F., Bousseksou, A., Tuchagues, J. P. & Perlepes, J. P. (2003). Dalton Trans. pp. 3411-3418.
Bruker (2007). APEX2, SADABS and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Dunne, S. J., Summers, L. A. & von Nagy-Felsobuki, E. I. (1997). Coord. Chem. Rev. 165, 1-92.
Huang, Y. G., Gong, Y. Q., Jiang, F. L., Yuan, D. Q., Wu, M. Y., Gao, Q., Wei, W. & Hong, M. C. (2007). Cryst. Growth Des. 7, 1385-1389.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.
Wang, Z.-J., Zhang, F. & Wan, C.-Q. (2010). Acta Cryst. E66, m1232-m1233.
Wang, Y., Zhao, X. Q., Shi, W., Cheng, P., Liao, D. Z. & Yan, S. P. (2009). Cryst. Growth Des. 9, 2137-2145.

metal-organic compounds

Bis[5-(pyridin-2-yl)pyrazine-2-carbonitrile-2N4,N5]silver hexafluoridophosphate