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Volume 69 
Part 1 
Page i3  
January 2013  

Received 21 November 2012
Accepted 15 December 2012
Online 22 December 2012

Key indicators
Single-crystal X-ray study
T = 296 K
Mean [sigma](P-O) = 0.005 Å
R = 0.043
wR = 0.078
Data-to-parameter ratio = 16.4
Details
Open access

RbYb(PO3)4

aDepartment of Material Science and Engineering, Yunnan University, Kunming, Yunnan 650091, People's Republic of China
Correspondence e-mail: jzhu@ynu.edu.cn

Rubidium ytterbium(III) tetrakis(polyphosphate), RbYb(PO3)4, was synthesized by solid-state reaction. It adopts structure type IV of the MRE(PO3)4 (M = alkali metal and RE = rare earth metal) family of compounds. The structure is composed of a three-dimensional framework made up from double spiral polyphosphate chains parallel to [10-1] and irregular [YbO8] polyhedra. There are eight PO4 tetrahedra in the repeat unit of the polyphosphate chains. The Rb+ cation is located in channels extending along [100] that are delimited by the three-dimensional framework. It is surrounded by 11 O atoms, defining an irregular polyhedron.

Related literature

For background to applications of condensed rare earth phosphates, see: Malinowski (1989[Malinowski, M. (1989). J. Phys. Condens. Matter, 1, 4673-4686.]); Miyazawa et al. (1979[Miyazawa, S., Koizumi, H., Kubodera, K. & Iwasaki, H. (1979). J. Cryst. Growth, 47, 351-356.]). For the structures of other ytterbium phosphate compounds, see: Rghioui et al. (2002[Rghioui, L., El Ammari, L., Benarafa, L. & Wignacourt, J. P. (2002). Acta Cryst. C58, i90-i91.]); Fang et al. (2008[Fang, M., Cheng, W. D., Xie, Z., Zhang, H., Zhao, D., Zhang, W. L. & Yang, S. L. (2008). J. Mol. Struct. 891, 25-29.]); Hong (1974[Hong, H. Y.-P. (1974). Acta Cryst. B30, 1857-1861.]); Jansen et al. (1991[Jansen, M., Wu, G. Q. & Königstein, K. (1991). Z. Kristallogr. 197, 245-246.]). For an isotypic structure, see: Zhu et al. (2009[Zhu, J., Cheng, W.-D. & Zhang, H. (2009). Acta Cryst. E65, i70.]).

Experimental

Crystal data
  • RbYb(PO3)4

  • Mr = 574.40

  • Monoclinic, P 21 /n

  • a = 10.2022 (15) Å

  • b = 8.7975 (13) Å

  • c = 10.9300 (16) Å

  • [beta] = 106.323 (2)°

  • V = 941.5 (2) Å3

  • Z = 4

  • Mo K[alpha] radiation

  • [mu] = 15.80 mm-1

  • T = 296 K

  • 0.10 × 0.07 × 0.04 mm

Data collection
  • Bruker APEXII CCD diffractometer

  • Absorption correction: multi-scan (SADABS; Bruker, 2008[Bruker (2008). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]) Tmin = 0.725, Tmax = 0.854

  • 9912 measured reflections

  • 2676 independent reflections

  • 2024 reflections with I > 2[sigma](I)

  • Rint = 0.143

Refinement
  • R[F2 > 2[sigma](F2)] = 0.043

  • wR(F2) = 0.078

  • S = 1.00

  • 2676 reflections

  • 163 parameters

  • [Delta][rho]max = 2.95 e Å-3

  • [Delta][rho]min = -2.99 e Å-3

Data collection: APEX2 (Bruker, 2008[Bruker (2008). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.]); cell refinement: SAINT (Bruker, 2008[Bruker (2008). 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.]) and DIAMOND (Brandenburg, 2006[Brandenburg, K. (2006). DIAMOND. Crystal Impact GbR, Bonn, Germany.]); software used to prepare material for publication: 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: WM2707 ).


Acknowledgements

This investigation was supported by the National Natural Science Foundation of China (No. 20901066), the Natural Science Foundation of Yunnan Province (No. 2012FB122), the training program for young academic and technical leaders in Yunnan Province, the training program for young teachers in Yunnan University, and the program for innovative research teams (in science and technology) of the University of Yunnan Province.

References

Brandenburg, K. (2006). DIAMOND. Crystal Impact GbR, Bonn, Germany.
Bruker (2008). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA.
Fang, M., Cheng, W. D., Xie, Z., Zhang, H., Zhao, D., Zhang, W. L. & Yang, S. L. (2008). J. Mol. Struct. 891, 25-29.  [CrossRef] [ChemPort]
Hong, H. Y.-P. (1974). Acta Cryst. B30, 1857-1861.  [CrossRef] [details] [ISI]
Jansen, M., Wu, G. Q. & Königstein, K. (1991). Z. Kristallogr. 197, 245-246.  [CrossRef] [ChemPort]
Malinowski, M. (1989). J. Phys. Condens. Matter, 1, 4673-4686.  [CrossRef] [ChemPort]
Miyazawa, S., Koizumi, H., Kubodera, K. & Iwasaki, H. (1979). J. Cryst. Growth, 47, 351-356.  [CrossRef] [ChemPort]
Rghioui, L., El Ammari, L., Benarafa, L. & Wignacourt, J. P. (2002). Acta Cryst. C58, i90-i91.  [CrossRef] [details]
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.  [CrossRef] [details]
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.  [ISI] [CrossRef] [ChemPort] [details]
Zhu, J., Cheng, W.-D. & Zhang, H. (2009). Acta Cryst. E65, i70.  [CrossRef] [details]


Acta Cryst (2013). E69, i3  [ doi:10.1107/S1600536812050969 ]

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