[Journal logo]

Volume 69 
Part 2 
Page i14  
February 2013  

Received 15 January 2013
Accepted 22 January 2013
Online 31 January 2013

Key indicators
Single-crystal X-ray study
T = 298 K
Mean [sigma](As-O) = 0.002 Å
R = 0.022
wR = 0.058
Data-to-parameter ratio = 12.5
Details
Open access

Na3Al(AsO4)2

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

The structure of the title compound trisodium aluminium bis(arsenate), Na3Al(AsO4)2, is built up from AlO4 and AsO4 corner-sharing tetrahedra, forming an undulating two-dimensional framework parallel to (100). The layers are constituted of large Al6As6O36 rings made up from six AlO4 and AsO4 tetrahedra in which two sodium cations are situated, the third sodium cation being located in the interlayer space. The structural relationships between the title compound and Na3Fe(PO4)2, NaAlCo(PO4)2 and Al5Co3(PO4)8 are discussed.

Related literature

For open-framework structures, see: Colomban (1986[Colomban, Ph. (1986). Solid State Ionics, 21, 97-115.]); Brunet et al. (2003[Brunet, F., Bagdassarov, N. & Miletich, R. (2003). Solid State Ionics, 159, 35-47.]); Alamo & Roy (1984[Alamo, J. & Roy, R. (1984). J. Am. Ceram. Soc. 67, 78-80.]); Delmas et al. (1987[Delmas, C., Cherkaoui, F., Nadiri, A. & Hagenmuller, P. (1987). Mater. Res. Bull. 22, 631-639.]). For details of the preparation, see: Driss & Jouini (1994[Driss, A. & Jouini, T. (1994). J. Solid State Chem. 112, 277-280.]); Masquelier et al. (1995[Masquelier, C., D'Yvoire, F. & Collin, G. (1995). J. Solid State Chem. 118, 33-42.]). For closely related structures, see: Belkhiria et al. (1998[Belkhiria, M. S., Laaribi, S., Ben Hadj Amara, A. & Ben Amara, M. (1998). Ann. Chim. Sci. Mat. 23, 117-120.]); Chen et al. (1997[Chen, X.-A., Zhao, L., Li, Y., Guo, F. & Chen, B.-M. (1997). Acta Cryst. C53, 1754-1756.]); Bennet & Marcus (1988[Bennet, J. M. & Marcus, B. K. (1988). Stud. Surf. Sci. Catal. 37, 269-279.]). For bond-valence calculations, see: Brown & Altermatt (1985[Brown, I. D. & Altermatt, D. (1985). Acta Cryst. B41, 244-247.]).

Experimental

Crystal data
  • Na3Al(AsO4)2

  • Mr = 373.79

  • Monoclinic, P 21 /c

  • a = 6.5948 (7) Å

  • b = 11.8018 (9) Å

  • c = 9.4692 (8) Å

  • [beta] = 96.52 (1)°

  • V = 732.23 (12) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 9.44 mm-1

  • T = 298 K

  • 0.28 × 0.18 × 0.12 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 = 0.15, Tmax = 0.32

  • 2484 measured reflections

  • 1596 independent reflections

  • 1484 reflections with I > 2[sigma](I)

  • Rint = 0.032

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

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

  • wR(F2) = 0.058

  • S = 1.09

  • 1596 reflections

  • 128 parameters

  • [Delta][rho]max = 0.81 e Å-3

  • [Delta][rho]min = -1.02 e Å-3

Table 1
Selected bond lengths (Å)

Al1-O2i 1.771 (2)
Al1-O4 1.755 (2)
Al1-O6ii 1.769 (2)
Al1-O8iii 1.755 (2)
As1-O1 1.654 (2)
As1-O2 1.732 (2)
As1-O5iv 1.649 (2)
As2-O3 1.655 (2)
As2-O4v 1.723 (2)
As2-O6 1.734 (2)
As2-O7 1.655 (2)
Symmetry codes: (i) -x+1, -y+1, -z+1; (ii) [x, -y+{\script{1\over 2}}, z+{\script{1\over 2}}]; (iii) [-x+1, y-{\script{1\over 2}}, -z+{\script{1\over 2}}]; (iv) x+1, y, z; (v) [-x+1, y+{\script{1\over 2}}, -z+{\script{1\over 2}}].

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 publication routines (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: VN2065 ).


References

Alamo, J. & Roy, R. (1984). J. Am. Ceram. Soc. 67, 78-80.  [CrossRef]
Belkhiria, M. S., Laaribi, S., Ben Hadj Amara, A. & Ben Amara, M. (1998). Ann. Chim. Sci. Mat. 23, 117-120.  [CrossRef] [ChemPort]
Bennet, J. M. & Marcus, B. K. (1988). Stud. Surf. Sci. Catal. 37, 269-279.
Brandenburg, K. (1998). DIAMOND. University of Bonn, Germany.
Brown, I. D. & Altermatt, D. (1985). Acta Cryst. B41, 244-247.  [CrossRef] [ISI] [details]
Brunet, F., Bagdassarov, N. & Miletich, R. (2003). Solid State Ionics, 159, 35-47.  [CrossRef] [ChemPort]
Chen, X.-A., Zhao, L., Li, Y., Guo, F. & Chen, B.-M. (1997). Acta Cryst. C53, 1754-1756.  [CrossRef] [details]
Colomban, Ph. (1986). Solid State Ionics, 21, 97-115.  [CrossRef] [ChemPort]
Delmas, C., Cherkaoui, F., Nadiri, A. & Hagenmuller, P. (1987). Mater. Res. Bull. 22, 631-639.  [CrossRef] [ChemPort]
Driss, A. & Jouini, T. (1994). J. Solid State Chem. 112, 277-280.  [CrossRef] [ChemPort]
Duisenberg, A. J. M. (1992). J. Appl. Cryst. 25, 92-96.  [CrossRef] [ChemPort] [ISI] [details]
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.  [ISI] [CrossRef] [ChemPort] [details]
Harms, K. & Wocadlo, S. (1995). XCAD4. University of Marburg, Germany.
Macícek, J. & Yordanov, A. (1992). J. Appl. Cryst. 25, 73-80.  [CrossRef] [ISI] [details]
Masquelier, C., D'Yvoire, F. & Collin, G. (1995). J. Solid State Chem. 118, 33-42.  [CrossRef] [ChemPort] [ISI]
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]


Acta Cryst (2013). E69, i14  [ doi:10.1107/S1600536813002213 ]

This is an open-access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.