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Volume 69 
Part 6 
Page m329  
June 2013  

Received 23 January 2013
Accepted 9 May 2013
Online 18 May 2013

Key indicators
Single-crystal X-ray study
T = 223 K
Mean [sigma](C-C) = 0.004 Å
R = 0.021
wR = 0.054
Data-to-parameter ratio = 18.5
Details
Open access

cis-Tetrakis([mu]-N-phenylacetamidato)-[kappa]4N:O;[kappa]4O:N-bis[(benzonitrile-[kappa]N)rhodium(II)](Rh-Rh)

aDepartment of Chemistry, East Tennessee State University, PO Box 70695, Johnson City, TN 37614, USA
Correspondence e-mail: eaglec@etsu.edu

The complex molecule of the title compound, [Rh2{N(C6H5)COCH3}4(C6H5CN)2], exhibits crystallographically imposed centrosymmetry. The four acetamide ligands bridging the dirhodium core are arranged in a 2,2-cis manner, with two N atoms and two O atoms coordinating to the unique RhII atom cis to one another. The Neq-Rh-Rh-Oeq torsion angles on the acetamide bridges vary between 1.62 (4) and 1.78 (4)°. The Rh-Rh bond length is 2.4319 (3) Å. The axial nitrile ligand completes the distorted octahedral coordination sphere and shows a non-linear coordination with an Rh-N-C bond angle of 167.14 (15)°, while the N-C bond length is 1.135 (3) Å.

Related literature

For related structures, see: Bear & Kadish (1987[Bear, J. L. & Kadish, K. M. (1987). Inorg. Chem. 26, 830-836.]); Eagle et al. (2000[Eagle, C. T., Farrar, D. G., Holder, G. N., Pennington, W. T. & Bailey, R. D. (2000). J. Organomet. Chem. 596, 90-94.], 2012[Eagle, C. T., Kpogo, K. K., Zink, L. C. & Smith, A. E. (2012). Acta Cryst. E68, m877.]).

[Scheme 1]

Experimental

Crystal data
  • [Rh2(C8H8NO)4(C7H5N)2]

  • Mr = 948.69

  • Monoclinic, P 21 /n

  • a = 10.2115 (7) Å

  • b = 9.9667 (7) Å

  • c = 21.3672 (16) Å

  • [beta] = 100.971 (7)°

  • V = 2134.9 (3) Å3

  • Z = 2

  • Mo K[alpha] radiation

  • [mu] = 0.82 mm-1

  • T = 223 K

  • 0.49 × 0.35 × 0.16 mm

Data collection
  • Rigaku XtaLAB mini diffractometer

  • Absorption correction: multi-scan (REQAB; Rigaku, 1998[Rigaku (1998). REQAB. Rigaku Corporation, Tokyo, Japan.]) Tmin = 0.689, Tmax = 0.880

  • 21686 measured reflections

  • 4872 independent reflections

  • 4413 reflections with I > 2[sigma](I)

  • Rint = 0.023

Refinement
  • R[F2 > 2[sigma](F2)] = 0.021

  • wR(F2) = 0.054

  • S = 1.03

  • 4872 reflections

  • 264 parameters

  • H-atom parameters constrained

  • [Delta][rho]max = 0.39 e Å-3

  • [Delta][rho]min = -0.34 e Å-3

Data collection: CrystalClear-SM Auto (Rigaku, 2011[Rigaku (2011). CrystalClear-SM Auto. Rigaku Corporation, Tokyo, Japan.]); cell refinement: CrystalClear-SM Auto; data reduction: CrystalClear-SM Auto; program(s) used to solve structure: SIR2004 (Burla et al., 2005[Burla, M. C., Caliandro, R., Camalli, M., Carrozzini, B., Cascarano, G. L., De Caro, L., Giacovazzo, C., Polidori, G. & Spagna, R. (2005). J. Appl. Cryst. 38, 381-388.]); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008[Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.]); molecular graphics: CrystalStructure (Rigaku, 2010[Rigaku (2010). CrystalStructure. Rigaku Corporation, Tokyo, Japan.]); software used to prepare material for publication: CrystalStructure (Rigaku, 2010[Rigaku (2010). CrystalStructure. Rigaku Corporation, Tokyo, Japan.]).


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: MW2103 ).


Acknowledgements

We thank Dr Lee Daniels of Rigaku Americas for his training on the Rigaku XtaLAB diffractometer and his extended help in the completion of the structure determination. Support was provided by a Start Up Grant from ETSU. We thank Johnson Matthey for their generous loan of rhodium trichloride.

References

Bear, J. L. & Kadish, K. M. (1987). Inorg. Chem. 26, 830-836.  [CrossRef] [ISI]
Burla, M. C., Caliandro, R., Camalli, M., Carrozzini, B., Cascarano, G. L., De Caro, L., Giacovazzo, C., Polidori, G. & Spagna, R. (2005). J. Appl. Cryst. 38, 381-388.  [ISI] [CrossRef] [ChemPort] [details]
Eagle, C. T., Farrar, D. G., Holder, G. N., Pennington, W. T. & Bailey, R. D. (2000). J. Organomet. Chem. 596, 90-94.  [CrossRef] [ChemPort]
Eagle, C. T., Kpogo, K. K., Zink, L. C. & Smith, A. E. (2012). Acta Cryst. E68, m877.  [CSD] [CrossRef] [details]
Rigaku (1998). REQAB. Rigaku Corporation, Tokyo, Japan.
Rigaku (2010). CrystalStructure. Rigaku Corporation, Tokyo, Japan.
Rigaku (2011). CrystalClear-SM Auto. Rigaku Corporation, Tokyo, Japan.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [ChemPort] [details]


Acta Cryst (2013). E69, m329  [ doi:10.1107/S1600536813012828 ]

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