catena-Poly[bis­(μ3-2-methyl-3,5-dinitro­benzoato)disilver(I)]

Danish, M.; Tahir, M.N.; Ghafoor, S.; Ahmad, N.; Nisa, M.

doi:10.1107/S1600536811022483

Volume 67
Part 7
Pages m938-m939
July 2011

Received 28 May 2011
Accepted 10 June 2011
Online 18 June 2011

Key indicators
Single-crystal X-ray study
T = 296 K
Mean (C-C) = 0.004 Å
R = 0.031
wR = 0.071
Data-to-parameter ratio = 15.5
Details

catena-Poly[bis(₃-2-methyl-3,5-dinitrobenzoato)disilver(I)]

Muhammad Danish,^a M. Nawaz Tahir,^b ^* Sabiha Ghafoor,^c Nazir Ahmad ^c and Mehwish Nisa ^c

^aDepartment of Chemistry, University of Gujrat, Hafiz Hayat Campus, Gujrat, Pakistan,^bDepartment of Physics, University of Sargodha, Sargodha, Pakistan, and ^cDepartment of Chemistry, University of Sargodha, Sargodha, Pakistan
Correspondence e-mail: dmntahir_uos@yahoo.com

In the title coordination polymer, [Ag₂(C₈H₅N₂O₆)₂]_n, the silver ion is coordinated to three O atoms from three different anions in an approximate T-shape with one bond much longer than the other two. The polyhedral connectivity leads to [100] chains containing alternating centrosymmetric four-rings and eight-rings, with a short d¹⁰d¹⁰ AgAg interaction [2.8846 (4) Å] across the latter. The nitro groups are oriented at dihedral angles of 21.2 (5) and 64.3 (3)° with respect to the aromatic ring of the ligand. A C-HO interaction occurs in the crystal.

Related literature

For background and related structures, see: Danish, Ghafoor, Ahmad et al. (2011); Danish, Ghafoor, Tahir et al. (2011); Danish, Tahir et al. (2011); Tahir et al. (1996, 2009); Ülkü et al. (1996). For graph-set notation, see: Bernstein et al. (1995).

Experimental

Crystal data

[Ag₂(C₈H₅N₂O₆)₂]
M_r = 333.01
Monoclinic, P 2₁ /n
a = 5.7073 (3) Å
b = 11.9204 (6) Å
c = 14.5117 (7) Å
= 90.493 (2)°
V = 987.24 (9) Å³
Z = 4
Mo K radiation
= 2.06 mm^-1
T = 296 K
0.32 × 0.24 × 0.22 mm

Data collection

Bruker Kappa APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2005) T_min = 0.560, T_max = 0.630
9039 measured reflections
2406 independent reflections
1786 reflections with I > 2(I)
R_int = 0.037

Refinement

R[F² > 2(F²)] = 0.031
wR(F²) = 0.071
S = 1.02
2406 reflections
155 parameters
H-atom parameters constrained
_max = 0.37 e Å^-3
_min = -0.47 e Å^-3

Table 1
Selected geometric parameters (Å, °)

Ag1-O2ⁱ	2.190 (2)
Ag1-O1	2.227 (2)
Ag1-O1ⁱⁱ	2.502 (2)

O2ⁱ-Ag1-O1	162.11 (8)
O2ⁱ-Ag1-O1ⁱⁱ	117.90 (8)
O1-Ag1-O1ⁱⁱ	76.52 (8)
Symmetry codes: (i) -x-1, -y, -z; (ii) -x, -y, -z.

Table 2
Hydrogen-bond geometry (Å, °)

D-HA	D-H	HA	DA	D-HA
C5-H5O5ⁱⁱⁱ	0.93	2.34	3.227 (4)	159
Symmetry code: (iii) -x+1, -y, -z+1.

Data collection: APEX2 (Bruker, 2009); cell refinement: SAINT (Bruker, 2009); 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 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5898 ).

Acknowledgements

The authors acknowledge the provision of funds for the purchase of the diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Ex-Vice Chancellor, University of Sargodha, Pakistan.

References

Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555-1573.
Bruker (2005). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Bruker (2009). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA.
Danish, M., Ghafoor, S., Ahmad, N., Starosta, W. & Leciejewicz, J. (2011). Acta Cryst. E67, m519.
Danish, M., Ghafoor, S., Tahir, M. N., Ahmad, N. & Nisa, M. (2011). Acta Cryst. E67, m168-m169.
Danish, M., Tahir, M. N., Ghafoor, S., Ahmad, N. & Nisa, M. (2011). Acta Cryst. E67, m734-m735.
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565.
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837-838.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.
Tahir, M. N., Atakol, O. & Tariq, M. I. (2009). Acta Cryst. E65, m580.
Tahir, M. N., Ülkü, D. & Muvsumov, E. M. (1996). Acta Cryst. C52, 593-595.
Ülkü, D., Tahir, M. N. & Movsumov, E. M. (1996). Acta Cryst. C52, 2678-2680.