The Mg member of the isotypic series MTe6O13

Shirkhanlou, M.; Weil, M.

doi:10.1107/S1600536813003875

Volume 69
Part 3
Page i18
March 2013

Received 7 February 2013
Accepted 8 February 2013
Online 13 February 2013

Key indicators
Single-crystal X-ray study
T = 295 K
Mean (Mg-O) = 0.002 Å
R = 0.017
wR = 0.034
Data-to-parameter ratio = 46.4
Details

The Mg member of the isotypic series MTe₆O₁₃

Mahdi Shirkhanlou ^a and Matthias Weil ^a ^*

^aInstitute for Chemical Technologies and Analytics, Division of Structural Chemistry, Vienna University of Technology, Getreidemarkt 9/164-SC, A-1060 Vienna, Austria
Correspondence e-mail: mweil@mail.zserv.tuwien.ac.at

MgTe₆O₁₃, magnesium hexatellurate(IV), is isotypic with the structures of divalent first-row transition metal analogues MTe₆O₁₃ (M = Mn, Fe, Co, Ni and Zn). The asymmetric unit contains one Mg, two Te and five O atoms of which the Mg and one O atom lie on a threefold rotation axis. The structure is made up from slightly distorted [MgO₆] octahedra (isolated from each other), distorted [TeO₄] bisphenoids and [TeO_4 + 1] tetragonal pyramids sharing corners and edges. This arrangement leads to the formation of a dense three-dimensional structure.

Related literature

The title compound is isotypic with its Co, Mn, Ni (Irvine et al., 2003), Fe (van der Lee & Astier, 2007; van der Lee, 2013) and Zn (Nawash et al., 2007) analogues. For other phases in the system Mg-Te-O, see: Trömel & Ziethen-Reichnach (1970). For structure determinations of MgTe₂O₅ and Mg₂Te₃O₈, see: Weil (2005) and Lin et al. (2013), respectively. The crystal chemistry of oxotellurates(IV) has been reviewed by Zemann (1971).

Experimental

Crystal data

MgTe₆O₁₃
M_r = 997.91
Trigonal, $[R \overline 3]$
a = 10.1676 (2) Å
c = 18.9701 (3) Å
V = 1698.39 (5) Å³
Z = 6
Mo K radiation
= 15.38 mm^-1
T = 295 K
0.22 × 0.14 × 0.09 mm

Data collection

Bruker APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Bruker, 2012) T_min = 0.437, T_max = 0.749
50742 measured reflections
2875 independent reflections
2764 reflections with I > 2(I)
R_int = 0.044

Refinement

R[F² > 2(F²)] = 0.017
wR(F²) = 0.034
S = 1.36
2875 reflections
62 parameters
_max = 1.17 e Å^-3
_min = -1.40 e Å^-3

Table 1
Structural data of isotypic MTe₆O₁₃ compounds (Å, Å³) in space group R $[\overline{3}]$

M²⁺	a	c	V
Mg^a	10.1676 (2)	18.9701 (3)	1698.39 (5)
Mn^b	10.2505 (5)	19.2195 (9)	1748.89 (14)
Fe^c	10.16630 (10)	18.9330 (3)	1694.63 (4)
Co^b	10.1641 (5)	18.9814 (9)	1698.23 (14)
Ni^b	10.1522 (5)	18.8669 (9)	1684.30 (14)
Zn^d	10.1283 (9)	18.948 (3)	1683.3 (3)
Notes: (a) this work; (b) Irvine et al. (2003); (c) van der Lee & Astier (2007); (d) Nawash et al. (2007).

Table 2
Selected bond lengths (Å)

Mg1-O5	2.0676 (12)
Mg1-O2ⁱ	2.1596 (12)
Te1-O3	1.8524 (12)
Te1-O2	1.9324 (11)
Te1-O1	2.1314 (2)
Te1-O2ⁱⁱ	2.1842 (11)
Te2-O5	1.8489 (11)
Te2-O4	1.9186 (11)
Te2-O4ⁱⁱⁱ	2.0286 (12)
Te2-O3	2.2118 (12)
Te2-O5^iv	2.5908 (12)
Symmetry codes: (i) $[-y+{\script{1\over 3}}, x-y+{\script{2\over 3}}, z-{\script{1\over 3}}]$ ; (ii) $[-x+{\script{2\over 3}}, -y+{\script{1\over 3}}, -z+{\script{1\over 3}}]$ ; (iii) -y+1, x-y+1, z; (iv) -x+1, -y+1, -z.

Data collection: APEX2 (Bruker, 2012); cell refinement: SAINT (Bruker, 2012); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ATOMS for Windows (Dowty, 2008); software used to prepare material for publication: publCIF (Westrip, 2010).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PJ2001 ).

Acknowledgements

The X-ray centre of the Vienna University of Technology is acknowledged for financial support and for providing access to the single-crystal diffractometer.

References

Bruker (2012). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Dowty, E. (2008). ATOMS for Windows. Shape Software, Kingsport, Tennessee, USA.
Irvine, J. T. S., Johnston, M. G. & Harrison, W. T. A. (2003). Dalton Trans. pp. 2641-2645.
Lee, A. van der (2013). Personal communication.
Lee, A. van der & Astier, R. (2007). J. Solid State Chem. 180, 1243-1249.
Lin, W.-F., Xing, Q.-J., Ma, J., Zou, J.-P., Lei, S.-L., Luo, X.-B. & Guo, G.-C. (2013). Z. Anorg. Allg. Chem. 639, 31-34.
Nawash, J. M., Twamley, B. & Lynn, K. G. (2007). Acta Cryst. C63, i66-i68.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Trömel, M. & Ziethen-Reichnach, H. (1970). Z. Anorg. Allg. Chem. 378, 238-244.
Weil, M. (2005). Acta Cryst. E61, i237-i239.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.
Zemann, J. (1971). Monatsh. Chem. 102, 1209-1216.

inorganic compounds