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Volume 67 
Part 5 
Page m637  
May 2011  

Received 7 April 2011
Accepted 20 April 2011
Online 29 April 2011

Key indicators
Single-crystal X-ray study
T = 293 K
Mean [sigma](C-C) = 0.003 Å
R = 0.015
wR = 0.038
Data-to-parameter ratio = 10.4
Details
Open access

Tetraaqua(nitrato-[kappa]2O,O')bis(pyridinium-4-carboxylate-[kappa]O)europium(III) dinitrate

aCenter of Analysis and Testing, Nanyang Normal University, Nanyang 473061, People's Republic of China,bSchool of Physics and Electronic Engineering, Nanyang Normal University, Nanyang 473061, People's Republic of China,cSchool of Mathematics and Statistics, Nanyang Normal University, Nanyang 473061, People's Republic of China, and dCollege of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang 473061, People's Republic of China
Correspondence e-mail: zhongzhiguo1978@126.com

The asymmetric unit of the title compound, [Eu(NO3)(C6H5NO2)2(H2O)4](NO3)2, consists of one-half of the C2 symmetric coordination cation and one nitrate anion. The eight-coordinated EuIII atom is in a distorted dodecahedral coordination environment. The coordination cations and nitrate anions are connected via O-H...O and N-H...O hydrogen bonds into a three-dimensional network.

Related literature

For photophysical properties of lanthanide(III) coordination compounds, see, for example: Jüstel et al. (1998[Jüstel, T., Nikol, H. & Ronda, C. (1998). Angew. Chem. Int. Ed. 37, 3084-3103.]); Xu et al. (2010[Xu, H., Wei, Y., Zhao, B. M. & Huang, W. (2010). J. Rare Earths, 28, 666-670.]). For potential applications of lanthanide(III) coordination compounds as light-conversion molecular devices, see, for example: Lehn (1990[Lehn, J. M. (1990). Angew. Chem. Int. Ed. 29, 1304-1319.]).

[Scheme 1]

Experimental

Crystal data
  • [Eu(NO3)(C6H5NO2)2(H2O)4](NO3)2

  • Mr = 656.27

  • Monoclinic, C 2/c

  • a = 14.612 (4) Å

  • b = 12.498 (4) Å

  • c = 13.342 (4) Å

  • [beta] = 118.728 (4)°

  • V = 2136.6 (11) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 3.03 mm-1

  • T = 293 K

  • 0.35 × 0.32 × 0.28 mm

Data collection
  • Bruker APEXII CCD diffractometer

  • Absorption correction: multi-scan SADABS (Bruker, 1997[Bruker (1997). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.417, Tmax = 0.484

  • 5224 measured reflections

  • 1881 independent reflections

  • 1847 reflections with I > 2[sigma](I)

  • Rint = 0.017

Refinement
  • R[F2 > 2[sigma](F2)] = 0.015

  • wR(F2) = 0.038

  • S = 1.02

  • 1881 reflections

  • 180 parameters

  • 8 restraints

  • H atoms treated by a mixture of independent and constrained refinement

  • [Delta][rho]max = 0.58 e Å-3

  • [Delta][rho]min = -0.62 e Å-3

Table 1
Hydrogen-bond geometry (Å, °)

D-H...A D-H H...A D...A D-H...A
O1W-H1WB...O7i 0.81 (2) 1.99 (2) 2.790 (2) 175 (3)
O1W-H1WA...O1ii 0.83 (2) 1.87 (2) 2.653 (2) 155 (2)
O2W-H2WB...O1iii 0.83 (2) 1.84 (2) 2.661 (2) 173 (3)
O2W-H2WA...O5 0.82 (2) 2.23 (2) 2.958 (3) 148 (3)
N1-H6...O7iv 0.94 (3) 1.88 (3) 2.814 (3) 179 (3)
Symmetry codes: (i) [x-{\script{1\over 2}}, y-{\script{1\over 2}}, z]; (ii) [-x, y, -z+{\script{1\over 2}}]; (iii) [x-{\script{1\over 2}}, -y+{\script{1\over 2}}, z-{\script{1\over 2}}]; (iv) [-x+{\script{1\over 2}}, y+{\script{1\over 2}}, -z+{\script{1\over 2}}].

Data collection: SMART (Bruker, 1997[Bruker (1997). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 1997[Bruker (1997). SMART, 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.


Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: GK2366 ).


References

Bruker (1997). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Jüstel, T., Nikol, H. & Ronda, C. (1998). Angew. Chem. Int. Ed. 37, 3084-3103.
Lehn, J. M. (1990). Angew. Chem. Int. Ed. 29, 1304-1319.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Xu, H., Wei, Y., Zhao, B. M. & Huang, W. (2010). J. Rare Earths, 28, 666-670.


Acta Cryst (2011). E67, m637  [ doi:10.1107/S1600536811014772 ]

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