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Volume 69 
Part 2 
Page m121  
February 2013  

Received 9 January 2013
Accepted 16 January 2013
Online 23 January 2013

Key indicators
Single-crystal X-ray study
T = 223 K
Mean [sigma](C-C) = 0.008 Å
R = 0.051
wR = 0.111
Data-to-parameter ratio = 20.0
Details
Open access

{Bis[N,N'-dicyclohexyl-N'',N''-bis(trimethylsilyl)guanidinato-[kappa]2N,N']neodymium(III)}di-[mu]-chlorido-[bis(tetrahydrofuran-[kappa]O)lithium]

aNingbo Institute of Technology, Zhejiang University, Ningbo 315100, People's Republic of China, and bDepartment of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Correspondence e-mail: chj@nit.zju.edu.cn

In the title monomeric rare earth complex, [LiNd(C19H40N3Si2)2Cl2(C4H8O)2], the [(Me3Si)2NC(NCy)2]2Nd+ (Me is methyl, Cy is cyclohexyl) and Li(THF)2+ units (THF is tetrahydrofuran) are connected by two bridging Cl atoms. The Nd3+ ion is coordinated by two guanidinate ligands and two Cl atoms, forming a distorted chelating octahedral geometry. The Li+ ion is four-coordinated by two Cl atoms and two O atoms from THF molecules in a distorted tetrahedral geometry.

Related literature

For the synthesis of analogous bis(guanidinato) rare earth complexes, see: Luo et al. (2003[Luo, Y. J., Yao, Y. M., Shen, Q., Yu, K. B. & Weng, L. H. (2003). Eur. J. Inorg. Chem. pp. 318-323.]). For a review of bis(guanidinato) rare earth complexes, see: Trifonov (2010[Trifonov, A. A. (2010). Coord. Chem. Rev. 254, 1327-1347.]).

[Scheme 1]

Experimental

Crystal data
  • [LiNd(C19H40N3Si2)2Cl2(C4H8O)2]

  • Mr = 1099.73

  • Monoclinic, P 21 /c

  • a = 24.1739 (16) Å

  • b = 13.5238 (8) Å

  • c = 18.8108 (13) Å

  • [beta] = 103.215 (2)°

  • V = 5986.8 (7) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 1.07 mm-1

  • T = 223 K

  • 0.40 × 0.40 × 0.30 mm

Data collection
  • Rigaku Saturn diffractometer

  • Absorption correction: multi-scan (REQAB; Jacobson, 1998[Jacobson, R. (1998). REQAB. Private communication to the Rigaku Corporation, Tokyo, Japan.]) Tmin = 0.464, Tmax = 0.752

  • 35442 measured reflections

  • 11104 independent reflections

  • 9767 reflections with I > 2[sigma](I)

  • Rint = 0.051

Refinement
  • R[F2 > 2[sigma](F2)] = 0.051

  • wR(F2) = 0.111

  • S = 1.17

  • 11104 reflections

  • 554 parameters

  • 3 restraints

  • H-atom parameters constrained

  • [Delta][rho]max = 0.74 e Å-3

  • [Delta][rho]min = -1.21 e Å-3

Table 1
Selected bond lengths (Å)

Li1-Cl1 2.336 (7)
Li1-Cl2 2.335 (7)
Li1-O1 1.907 (9)
Li1-O2 1.951 (8)
Nd1-Cl1 2.7621 (11)
Nd1-Cl2 2.7667 (11)
Nd1-N1 2.462 (3)
Nd1-N2 2.405 (3)
Nd1-N4 2.481 (3)
Nd1-N5 2.419 (3)

Data collection: CrystalClear (Rigaku, 2000[Rigaku (2000). CrystalClear and CrystalStructure. Rigaku Corporation, Tokyo, Japan.]); cell refinement: CrystalClear; data reduction: CrystalStructure (Rigaku, 2000[Rigaku (2000). CrystalClear and CrystalStructure. Rigaku Corporation, Tokyo, Japan.]); 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.


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: VN2064 ).


Acknowledgements

The authors thank Yong Zhang of Suzhou University for the data collection.

References

Jacobson, R. (1998). REQAB. Private communication to the Rigaku Corporation, Tokyo, Japan.
Luo, Y. J., Yao, Y. M., Shen, Q., Yu, K. B. & Weng, L. H. (2003). Eur. J. Inorg. Chem. pp. 318-323.  [CSD] [CrossRef]
Rigaku (2000). CrystalClear and CrystalStructure. Rigaku Corporation, Tokyo, Japan.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Trifonov, A. A. (2010). Coord. Chem. Rev. 254, 1327-1347.  [ISI] [CrossRef] [ChemPort]


Acta Cryst (2013). E69, m121  [ doi:10.1107/S160053681300158X ]

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