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Volume 69 
Part 1 
Page m37  
January 2013  

Received 27 November 2012
Accepted 4 December 2012
Online 12 December 2012

Key indicators
Single-crystal X-ray study
T = 193 K
Mean [sigma](C-C) = 0.004 Å
R = 0.030
wR = 0.064
Data-to-parameter ratio = 28.3
Details
Open access

2,2,7,7,12,12,17,17-Octamethyl-21,22,23,24-tetrathia-2,7,12,17-tetragermapentacyclo[16.2.1.13,6.18,11.113,16]tetracosa-3,5,8,10,13,15,18,20-octaene

aLaboratoire Hétérochimie Fondamentale et Appliquée, UMR CNRS 5069, Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex 9, France, and bUniversité de Toulouse, UPS, Institut de Chimie de Toulouse FR2599, 118 route de Narbonne, 31062 Toulouse Cedex 9, France
Correspondence e-mail: castel@chimie.ups-tlse.fr

The title compound, [Ge4(CH3)8(C4H2S)4], crystallizes with one-half molecule in the asymmetric unit, the whole molecule being generated by inversion symmetry. The dihedral angle between adjacent thiophene rings is 72.84 (14)°. In the crystal, molecules are linked by C-H...[pi] interactions, leading to the formation of chains along [100].

Related literature

For a review concerning aryl- and heteroarylgermanes, see: Spivey & Diaper (2003[Spivey, A. C. & Diaper, C. M. (2003). Sci. Synth. 5, 149-157.]). For syntheses and structures of heteroarylgermanes, see: Hockemeyer, Castel et al. (1997[Hockemeyer, J., Castel, A., Riviere, P., Satgé, J., Ryder, K. G., Drury, A., Davey, A. P. & Blau, W. J. (1997). Appl. Organomet. Chem. 11, 513-521.]); Barrau et al. (1997[Barrau, J., Rima, G., Akkari, A. & Satgé, J. (1997). Inorg. Chim. Acta, 260, 11-15.]); König & Rödel (1997[König, B. & Rödel, M. (1997). Chem. Ber. 130, 421-423.]). For properties of heteroarylgermanes, see: Hockemeyer, Valentin et al. (1997[Hockemeyer, J., Valentin, B., Castel, A., Riviere, P., Satgé, J., Cardin, C. J. & Teixeira, S. (1997). Main Group Met. Chem. 20, 775-781.]). For a description of the Cambridge Structural Database, see: Allen (2002[Allen, F. H. (2002). Acta Cryst. B58, 380-388.]).

[Scheme 1]

Experimental

Crystal data
  • [Ge4(CH3)8(C4H2S)4]

  • Mr = 739.22

  • Monoclinic, P 21 /c

  • a = 6.6211 (4) Å

  • b = 12.6668 (7) Å

  • c = 18.3413 (11) Å

  • [beta] = 90.698 (4)°

  • V = 1538.14 (16) Å3

  • Z = 2

  • Mo K[alpha] radiation

  • [mu] = 4.15 mm-1

  • T = 193 K

  • 0.20 × 0.06 × 0.02 mm

Data collection
  • Bruker APEXII diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2006[Bruker (2006). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.741, Tmax = 0.922

  • 34763 measured reflections

  • 4222 independent reflections

  • 3102 reflections with I > 2[sigma](I)

  • Rint = 0.065

Refinement
  • R[F2 > 2[sigma](F2)] = 0.030

  • wR(F2) = 0.064

  • S = 1.01

  • 4222 reflections

  • 149 parameters

  • H-atom parameters constrained

  • [Delta][rho]max = 0.44 e Å-3

  • [Delta][rho]min = -0.37 e Å-3

Table 1
Hydrogen-bond geometry (Å, °)

Cg1 is the centroid of the S1/C3-C6 ring.

D-H...A D-H H...A D...A D-H...A
C10-H10...Cg1i 0.95 2.82 3.606 (4) 141
Symmetry code: (i) x+1, y, z.

Data collection: APEX2 (Bruker, 2006[Bruker (2006). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: APEX2 and SAINT (Bruker, 2006[Bruker (2006). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); data reduction: SAINT; 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: SHELXTL (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); software used to prepare material for publication: SHELXTL and publCIF (Westrip, 2010[Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.]).


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2536 ).


Acknowledgements

This work was supported financially by the Centre National de la Recherche Scientifique (CNRS), by Université Paul Sabatier (UPS) and by the Agence Nationale de la Recherche (ANR-08-CSOG-00). GC is grateful to the ANR for a PhD grant.

References

Allen, F. H. (2002). Acta Cryst. B58, 380-388.  [ISI] [CrossRef] [details]
Barrau, J., Rima, G., Akkari, A. & Satgé, J. (1997). Inorg. Chim. Acta, 260, 11-15.  [CrossRef] [ChemPort] [ISI]
Bruker (2006). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Hockemeyer, J., Castel, A., Riviere, P., Satgé, J., Ryder, K. G., Drury, A., Davey, A. P. & Blau, W. J. (1997). Appl. Organomet. Chem. 11, 513-521.  [CrossRef] [ChemPort]
Hockemeyer, J., Valentin, B., Castel, A., Riviere, P., Satgé, J., Cardin, C. J. & Teixeira, S. (1997). Main Group Met. Chem. 20, 775-781.  [CrossRef]
König, B. & Rödel, M. (1997). Chem. Ber. 130, 421-423.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Spivey, A. C. & Diaper, C. M. (2003). Sci. Synth. 5, 149-157.  [ChemPort]
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.  [ISI] [CrossRef] [ChemPort] [details]


Acta Cryst (2013). E69, m37  [ doi:10.1107/S1600536812049720 ]

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