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Volume 67 
Part 2 
Page i8  
February 2011  

Received 29 November 2010
Accepted 23 December 2010
Online 12 January 2011

Key indicators
Single-crystal X-ray study
T = 290 K
Mean [sigma](Al-O) = 0.004 Å
R = 0.033
wR = 0.093
Data-to-parameter ratio = 17.5
Details
Open access

[Al(H2O)6][Cr(OH)6Mo6O18]·10H2O

aState Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
Correspondence e-mail: wulx@jlu.edu.cn

The title compound, [Al(H2O)6][Cr(OH)6Mo6O18]·10H2O, hexaaquaaluminium hexahydroxidooctadecaoxidomolybdochromate(III) decahydrate, crystallizes isotypically with its gallium analogue [Ga(H2O)6][Cr(OH)6Mo6O18].10H2O. In the structure of the title compound, both the [Al(H2O)6]3+ cation and the Anderson-type [Cr(OH)6Mo6O18]3- anion lie on centres of inversion. The anion is composed of seven edge-sharing octahedra, six of which are MoO6 octahedra that are arranged hexagonally around the central Cr(OH)6 octahedron. The anions are linked to each other by O-H...O hydrogen bonds into infinite chains along [100]. These chains are further connected with the [Al(H2O)6]3+ cations through O-H...O hydrogen bonds into sheets parallel to (01[\overline{1}]). O-H...O hydrogen bonds involving all the lattice water molecules finally link the sheets into a three-dimensional network.

Related literature

For background literature on polyoxometalates, see: An et al. (2005[An, H. Y., Li, Y. G., Wang, E. B., Xiao, D. R., Sun, C. Y. & Xu, L. (2005). Inorg. Chem. 44, 6062-6070.]); Shivaiah et al. (2003[Shivaiah, V., Nagaraju, M. & Das, S. K. (2003). Inorg. Chem. 42, 6604-6606.]). The isotypic gallium analogue was reported by Kaziev et al. (2002[Kaziev, G. Z., Qiguones, S. O., Bel'skii, V. K., Zavodnik, V. E., Osminkina, I. V. & de Ita, A. (2002). Russ. J. Inorg. Chem. 47, 335-340.]).

Experimental

Crystal data
  • [Al(H2O)6][Cr(OH)6Mo6O18]·10H2O

  • Mr = 1332.92

  • Triclinic, [P \overline 1]

  • a = 6.809 (5) Å

  • b = 11.267 (7) Å

  • c = 11.596 (9) Å

  • [alpha] = 101.26 (3)°

  • [beta] = 97.02 (3)°

  • [gamma] = 101.81 (3)°

  • V = 841.7 (10) Å3

  • Z = 1

  • Mo K[alpha] radiation

  • [mu] = 2.63 mm-1

  • T = 290 K

  • 0.12 × 0.12 × 0.11 mm

Data collection
  • Rigaku R-AXIS RAPID diffractometer

  • Absorption correction: multi-scan (ABSCOR; Higashi, 1995[Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.]) Tmin = 0.745, Tmax = 0.770

  • 8257 measured reflections

  • 3801 independent reflections

  • 3346 reflections with I > 2[sigma](I)

  • Rint = 0.037

Refinement
  • R[F2 > 2[sigma](F2)] = 0.033

  • wR(F2) = 0.093

  • S = 1.10

  • 3801 reflections

  • 217 parameters

  • 24 restraints

  • H-atom parameters constrained

  • [Delta][rho]max = 0.89 e Å-3

  • [Delta][rho]min = -0.86 e Å-3

Table 1
Hydrogen-bond geometry (Å, °)

D-H...A D-H H...A D...A D-H...A
OH3-H3...OT1i 0.85 1.85 2.681 (4) 167
OH1-H1...OB2i 0.85 2.10 2.944 (4) 172
OH2-H2...OW5ii 0.85 1.82 2.665 (5) 178
OW3-H8...OT4iii 0.85 1.83 2.628 (5) 156
OW3-H9...OW7iii 0.85 1.81 2.632 (5) 163
OW1-H4...OW7 0.85 2.01 2.730 (5) 142
OW1-H5...OW4iv 0.85 1.74 2.577 (5) 167
OW2-H6...OB3v 0.85 1.72 2.559 (4) 171
OW2-H7...OW6 0.85 1.88 2.728 (5) 178
OW4-H10...OB1vi 0.85 1.94 2.737 (5) 156
OW5-H12...OT1vii 0.86 2.15 3.002 (6) 179
OW5-H13...OW6viii 0.85 1.99 2.842 (6) 180
OW6-H14...OW5v 0.85 2.04 2.800 (6) 149
OW6-H15...OT3iii 0.85 2.45 3.091 (6) 133
OW7-H16...OT3iii 0.85 2.13 2.878 (5) 146
OW7-H17...OW8 0.85 1.98 2.759 (5) 152
OW8-H18...OT1ix 0.85 2.19 2.902 (5) 141
OW8-H18...OT6x 0.85 2.62 3.241 (5) 131
OW8-H19...OW8xi 0.85 2.56 3.283 (6) 144
Symmetry codes: (i) -x+1, -y, -z; (ii) -x, -y+1, -z; (iii) -x+1, -y+1, -z+1; (iv) x-1, y, z; (v) -x, -y+1, -z+1; (vi) x+1, y, z+1; (vii) -x+1, -y+1, -z; (viii) x, y, z-1; (ix) x, y, z+1; (x) -x, -y, -z+1; (xi) -x+1, -y, -z+1.

Data collection: RAPID-AUTO (Rigaku, 1998[Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.]); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002[Rigaku/MSC (2002). CrystalStructure. Rigaku/MSC Inc., The Woodlands, Texas, USA.]); 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: PLATON (Spek, 2009[Spek, A. L. (2009). Acta Cryst. D65, 148-155.]); software used to prepare material for publication: SHELXL97.


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2434 ).


Acknowledgements

This work was supported financially by the National Basic Research Program of China (2007CB808003) and the National Natural Science Foundation of China (20973082, 20921003, 20703019).

References

An, H. Y., Li, Y. G., Wang, E. B., Xiao, D. R., Sun, C. Y. & Xu, L. (2005). Inorg. Chem. 44, 6062-6070.  [ISI] [CrossRef] [PubMed] [ChemPort]
Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan.
Kaziev, G. Z., Qiguones, S. O., Bel'skii, V. K., Zavodnik, V. E., Osminkina, I. V. & de Ita, A. (2002). Russ. J. Inorg. Chem. 47, 335-340.
Rigaku (1998). RAPID-AUTO. Rigaku Corporation, Tokyo, Japan.
Rigaku/MSC (2002). CrystalStructure. Rigaku/MSC Inc., The Woodlands, Texas, USA.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Shivaiah, V., Nagaraju, M. & Das, S. K. (2003). Inorg. Chem. 42, 6604-6606.  [ISI] [CSD] [CrossRef] [PubMed] [ChemPort]
Spek, A. L. (2009). Acta Cryst. D65, 148-155.  [ISI] [CrossRef] [details]


Acta Cryst (2011). E67, i8  [ doi:10.1107/S1600536810053936 ]

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