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Volume 64 
Part 1 
Page i4  
January 2008  

Received 22 November 2007
Accepted 7 December 2007
Online 12 December 2007


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© International Union of Crystallography 2008

Key indicators
Single-crystal X-ray study
T = 293 K
Mean [sigma](C-C) = 0.016 Å
R = 0.033
wR = 0.079
Data-to-parameter ratio = 28.9
Details

Octadecabromidobis(dicarbido)decadysprosium, [Dy10Br18(C2)2]

Kathrin Dauba and Gerd Meyera*

aInstitut für Anorganische Chemie, Universität zu Köln, Greinstrasse 6, D-50939 Köln, Germany
Correspondence e-mail: gerd.meyer@uni-koeln.de

Single crystals of [Dy10Br18(C2)2] were obtained during the reaction of DyBr3 with dysprosium metal and graphite in a sealed tantalum container. In the crystal structure, the Dy atoms form dimers of edge-sharing octahedra, each encapsulating a C2 unit. The metal atoms are surrounded by Br atoms above the cluster edges and vertices, respectively. The dimers are connected to each other by Br atoms, leading to a three-dimensional network. [Dy10Br18(C2)2] is isotypic with its iodido analogue [Dy10I18(C2)2].

Related literature

Details of ternary and quaternary halides of the rare earth elements have been compiled by Meyer & Wickleder (2000[Meyer, G. & Wickleder, M. S. (2000). Handbook on the Physics and Chemistry of Rare Earths, Vol. 28, edited by K. A. Gscheidner Jr & L. Eyring, pp. 53-129. Amsterdam: Elsevier.]). Bromides with the formula [RE10Br18(C2)2], where RE is Gd, Tb or Er, have been studied by Liess (1996[Liess, H. (1996). Dr. rer. nat. dissertation, University of Hannover, Germany, pp. 59-64.]), Mattausch et al. (2002[Mattausch, H., Oeckler, O. & Simon, A. (2002). Z. Kristallogr. New Cryst. Struct. 217, 458.]) and Uhrlandt et al. (1994[Uhrlandt, S., Artelt, H. M. & Meyer, G. (1994). Z. Anorg. Allg. Chem. 620, 1532-1536.]). Recently, the first dysprosium compound belonging to this structural family, [Dy10I18(C2)2], was reported by Mattausch et al. (2007[Mattausch, H., Hoch, C. & Simon, A. (2007). Z. Naturforsch. Teil B 62, 148-154.]). [Dy10Br18(C2)2] is obtained by reduction of DyBr3 with dysprosium and graphite. For the synthesis of the starting material DyBr3, see Meyer et al. (1987[Meyer, G., Dötsch, S. & Staffel, T. (1987). J. Less-Common Met. 127, 155-160.]).

Experimental

Crystal data

  • [Dy10Br18(C2)2]

  • Mr = 3111.42

  • Monoclinic, P 21 /c

  • a = 9.7399 (12) Å

  • b = 16.3398 (15) Å

  • c = 13.2469 (19) Å

  • [beta] = 120.869 (9)°

  • V = 1809.6 (4) Å3

  • Z = 2

  • Mo K[alpha] radiation

  • [mu] = 40.24 mm-1

  • T = 293 (2) K

  • 0.20 × 0.20 × 0.20 mm
Data collection

  • Stoe IPDSII diffractometer

  • Absorption correction: numerical [X-RED (Stoe & Cie, 2001[Stoe & Cie (2001). X-AREA (Version 1.15) and X-RED (Version 1.22). Stoe & Cie, Darmstadt, Germany.]) and X-SHAPE (Stoe & Cie, 1999[Stoe & Cie (1999). X-SHAPE. Version 1.06. Stoe & Cie, Darmstadt, Germany.])] Tmin = 0.015, Tmax = 0.063

  • 23768 measured reflections

  • 3935 independent reflections

  • 2989 reflections with I > 2[sigma](I)

  • Rint = 0.096
Refinement

  • R[F2 > 2[sigma](F2)] = 0.033

  • wR(F2) = 0.079

  • S = 1.01

  • 3935 reflections

  • 136 parameters

  • [Delta][rho]max = 2.44 e Å-3

  • [Delta][rho]min = -1.75 e Å-3

Data collection: X-AREA (Stoe & Cie, 2001[Stoe & Cie (2001). X-AREA (Version 1.15) and X-RED (Version 1.22). Stoe & Cie, Darmstadt, Germany.]); cell refinement: X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997[Sheldrick, G. M. (1997). SHELXS97 and SHELXL97. University of Göttingen, Germany.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997[Sheldrick, G. M. (1997). SHELXS97 and SHELXL97. University of Göttingen, Germany.]); molecular graphics: DIAMOND (Brandenburg, 2005[Brandenburg, K. (2005). DIAMOND. Version 3.0d. Crystal Impact GbR, Bonn, Germany.]); software used to prepare material for publication: SHELXL97.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2169 ).

Acknowledgements

This work was supported by the Deutsche Forschungsgemeinschaft (DFG) (SFB 608 `Complex transition metal compounds with spin and charge degrees of freedom and disorder').

References

Brandenburg, K. (2005). DIAMOND. Version 3.0d. Crystal Impact GbR, Bonn, Germany.
Liess, H. (1996). Dr. rer. nat. dissertation, University of Hannover, Germany, pp. 59-64.
Mattausch, H., Hoch, C. & Simon, A. (2007). Z. Naturforsch. Teil B 62, 148-154.  [ChemPort]
Mattausch, H., Oeckler, O. & Simon, A. (2002). Z. Kristallogr. New Cryst. Struct. 217, 458.
Meyer, G., Dötsch, S. & Staffel, T. (1987). J. Less-Common Met. 127, 155-160.  [CrossRef] [ChemPort]
Meyer, G. & Wickleder, M. S. (2000). Handbook on the Physics and Chemistry of Rare Earths, Vol. 28, edited by K. A. Gscheidner Jr & L. Eyring, pp. 53-129. Amsterdam: Elsevier.
Sheldrick, G. M. (1997). SHELXS97 and SHELXL97. University of Göttingen, Germany.
Stoe & Cie (1999). X-SHAPE. Version 1.06. Stoe & Cie, Darmstadt, Germany.
Stoe & Cie (2001). X-AREA (Version 1.15) and X-RED (Version 1.22). Stoe & Cie, Darmstadt, Germany.
Uhrlandt, S., Artelt, H. M. & Meyer, G. (1994). Z. Anorg. Allg. Chem. 620, 1532-1536.  [CrossRef] [ChemPort]

Acta Cryst (2008). E64, i4  [ doi:10.1107/S1600536807066111 ]