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Volume 68 
Part 12 
Page i93  
December 2012  

Received 17 November 2012
Accepted 23 November 2012
Online 30 November 2012

Key indicators
Single-crystal X-ray study
T = 298 K
Mean [sigma](Mo-O) = 0.003 Å
Disorder in main residue
R = 0.022
wR = 0.058
Data-to-parameter ratio = 13.1
Details
Open access

Na2MoO2As2O7

aLaboratoire de Matériaux et Cristallochimie, Faculté des Sciences de Tunis, Université de Tunis ElManar, 2092 ElManar II Tunis, Tunisia
Correspondence e-mail: faouzi.zid@fst.rnu.tn

Disodium molybdenum dioxide diarsenate, Na2MoO2As2O7, has been synthesized by a solid-state reaction. The structure is built up from MoAs2O12 linear units sharing corners to form a three-dimensional framework containing tunnels running along the a-axis direction in which the Na+ cations are located. In this framework, the AsV atoms are tetrahedrally coordinated and form an As2O7 group. The MoVI atom is displaced from the center of an octahedron of O atoms. Two Na+ cations are disordered about inversion centres. Structural relationships between different compounds: A2MoO2As2O7 (A = K, Rb), AMOP2O7 (A = Na, K, Rb; M = Mo, Nb) and MoP2O7 are discussed.

Related literature

For background to the physico-chemical properties of related compounds, see: Daidouh et al. (1997[Daidouh, A., Veiga, M. L. & Pico, C. (1997). J. Solid State Chem. 130, 28-24.]); Troup & Clearfield (1977[Troup, J. M. & Clearfield, A. (1977). Inorg. Chem. 16, 3311-3313.]); Guesdon et al. (1990[Guesdon, A., Borel, M. M., Leclaire, A., Grandin, A. & Raveau, B. (1990). J. Solid State Chem. 89, 83-87.]). For details of structurally related compounds, see: Averbuch-Pouchot (1988[Averbuch-Pouchot, M. T. (1988). Acta Cryst. C44, 2046-2048.], 1989[Averbuch-Pouchot, M. T. (1989). J. Solid State Chem. 79, 296-299.]); Zid et al. (1998[Zid, M. F., Driss, A. & Jouini, T. (1998). J. Solid State Chem. 141, 500-507.], 2003[Zid, M. F., Driss, A. & Jouini, T. (2003). Acta Cryst. E59, i65-i67.]); Ledain et al. (1996[Ledain, S., Leclaire, A., Borel, M. M., Provost, J. & Raveau, B. (1996). J. Solid State Chem. 124, 24-28.]); Gueho et al. (1992[Gueho, C., Borel, M. M., Grandin, A., Leclaire, A. & Raveau, B. (1992). Z. Anorg. Allg. Chem. 615, 104-108.]); Fakhfakh et al. (1994[Fakhfakh, M., Oyetola, S., Jouini, N., Verbaere, A. & Piffard, Y. (1994). Mater. Res. Bull. 29, 97-105.]); Linde et al. (1980[Linde, S. A., Gorbunova, Yu. E., Lavrov, A. V. & Tananaev, I. V. (1980). Dokl. Akad. Nauk SSSR, 250, 96-99.]); Leclaire et al. (1988[Leclaire, A., Borel, M. M., Grandin, A. & Raveau, B. (1988). Eur. J. Solid State Inorg. Chem. 25, 323-328.]). For the preparation, see: Zid & Jouini (1996[Zid, M. F. & Jouini, T. (1996). Acta Cryst. C52, 1334-1336.]); Zid et al. (1997[Zid, M. F., Driss, A. & Jouini, T. (1997). J. Solid State Chem. 133, 386-390.], 1998[Zid, M. F., Driss, A. & Jouini, T. (1998). J. Solid State Chem. 141, 500-507.]); Hajji et al. (2004[Hajji, M., Zid, M. F., Driss, A. & Jouini, T. (2004). Acta Cryst. C60, i76-i78.]); Hajji & Zid (2006[Hajji, M. & Zid, M. F. (2006). Acta Cryst. E62, i114-i116.]); Jouini et al. (2012[Jouini, R., Zid, M. F. & Driss, A. (2012). Acta Cryst. E68, i24.]); Ben Hlila et al. (2009[Ben Hlila, S., Zid, M. F. & Driss, A. (2009). Acta Cryst. E65, i11.]). For bond-valence sums, see: Brown & Altermatt (1985[Brown, I. D. & Altermatt, D. (1985). Acta Cryst. B41, 244-247.]).

Experimental

Crystal data
  • Na2MoO2As2O7

  • Mr = 435.76

  • Monoclinic, P 21 /c

  • a = 7.1130 (7) Å

  • b = 12.056 (2) Å

  • c = 9.8030 (9) Å

  • [beta] = 100.48 (2)°

  • V = 826.63 (18) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 9.66 mm-1

  • T = 298 K

  • 0.56 × 0.32 × 0.21 mm

Data collection
  • Enraf-Nonius CAD-4 diffractometer

  • Absorption correction: [psi] scan (North et al., 1968[North, A. C. T., Phillips, D. C. & Mathews, F. S. (1968). Acta Cryst. A24, 351-359.]) Tmin = 0.037, Tmax = 0.134

  • 2280 measured reflections

  • 1790 independent reflections

  • 1711 reflections with I > 2[sigma](I)

  • Rint = 0.019

  • 2 standard reflections every 120 min intensity decay: 1.2%

Refinement
  • R[F2 > 2[sigma](F2)] = 0.022

  • wR(F2) = 0.058

  • S = 1.25

  • 1790 reflections

  • 137 parameters

  • [Delta][rho]max = 0.83 e Å-3

  • [Delta][rho]min = -0.75 e Å-3

Data collection: CAD-4 EXPRESS (Duisenberg, 1992[Duisenberg, A. J. M. (1992). J. Appl. Cryst. 25, 92-96.]; Macícek & Yordanov, 1992[Macícek, J. & Yordanov, A. (1992). J. Appl. Cryst. 25, 73-80.]); cell refinement: CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo, 1995[Harms, K. & Wocadlo, S. (1995). XCAD4. University of Marburg, Germany.]); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: DIAMOND (Brandenburg, 1998[Brandenburg, K. (1998). DIAMOND. University of Bonn, Germany.]); software used to prepare material for publication: WinGX (Farrugia, 2012[Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.]).


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: BR2214 ).


References

Averbuch-Pouchot, M. T. (1988). Acta Cryst. C44, 2046-2048.  [CrossRef] [details]
Averbuch-Pouchot, M. T. (1989). J. Solid State Chem. 79, 296-299.  [ChemPort]
Ben Hlila, S., Zid, M. F. & Driss, A. (2009). Acta Cryst. E65, i11.  [CrossRef] [details]
Brandenburg, K. (1998). DIAMOND. University of Bonn, Germany.
Brown, I. D. & Altermatt, D. (1985). Acta Cryst. B41, 244-247.  [CrossRef] [ISI] [details]
Daidouh, A., Veiga, M. L. & Pico, C. (1997). J. Solid State Chem. 130, 28-24.  [CrossRef] [ChemPort]
Duisenberg, A. J. M. (1992). J. Appl. Cryst. 25, 92-96.  [CrossRef] [ChemPort] [ISI] [details]
Fakhfakh, M., Oyetola, S., Jouini, N., Verbaere, A. & Piffard, Y. (1994). Mater. Res. Bull. 29, 97-105.  [CrossRef] [ChemPort]
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.  [ISI] [CrossRef] [ChemPort] [details]
Gueho, C., Borel, M. M., Grandin, A., Leclaire, A. & Raveau, B. (1992). Z. Anorg. Allg. Chem. 615, 104-108.  [CrossRef] [ChemPort]
Guesdon, A., Borel, M. M., Leclaire, A., Grandin, A. & Raveau, B. (1990). J. Solid State Chem. 89, 83-87.  [CrossRef] [ISI]
Hajji, M. & Zid, M. F. (2006). Acta Cryst. E62, i114-i116.  [CrossRef] [details]
Hajji, M., Zid, M. F., Driss, A. & Jouini, T. (2004). Acta Cryst. C60, i76-i78.  [CrossRef] [details]
Harms, K. & Wocadlo, S. (1995). XCAD4. University of Marburg, Germany.
Jouini, R., Zid, M. F. & Driss, A. (2012). Acta Cryst. E68, i24.  [CrossRef] [details]
Leclaire, A., Borel, M. M., Grandin, A. & Raveau, B. (1988). Eur. J. Solid State Inorg. Chem. 25, 323-328.  [ChemPort]
Ledain, S., Leclaire, A., Borel, M. M., Provost, J. & Raveau, B. (1996). J. Solid State Chem. 124, 24-28.  [CrossRef] [ChemPort]
Linde, S. A., Gorbunova, Yu. E., Lavrov, A. V. & Tananaev, I. V. (1980). Dokl. Akad. Nauk SSSR, 250, 96-99.  [ChemPort]
Macícek, J. & Yordanov, A. (1992). J. Appl. Cryst. 25, 73-80.  [CrossRef] [ISI] [details]
North, A. C. T., Phillips, D. C. & Mathews, F. S. (1968). Acta Cryst. A24, 351-359.  [CrossRef] [details]
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Troup, J. M. & Clearfield, A. (1977). Inorg. Chem. 16, 3311-3313.  [CrossRef] [ChemPort] [ISI]
Zid, M. F., Driss, A. & Jouini, T. (1997). J. Solid State Chem. 133, 386-390.  [ISI] [CrossRef] [ChemPort]
Zid, M. F., Driss, A. & Jouini, T. (1998). J. Solid State Chem. 141, 500-507.  [ISI] [CrossRef] [ChemPort]
Zid, M. F., Driss, A. & Jouini, T. (2003). Acta Cryst. E59, i65-i67.  [CrossRef] [details]
Zid, M. F. & Jouini, T. (1996). Acta Cryst. C52, 1334-1336.  [CrossRef] [details]


Acta Cryst (2012). E68, i93  [ doi:10.1107/S1600536812048167 ]

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