View PDF Version
 
DOI: 10.1039/A905730G (Paper) Reference Section for: J. Mater. Chem., 1999, 9, 2821-2827

Syntheses, powder neutron diffraction structures and Mössbauer studies of some complex iron oxyfluorides: Sr3Fe2O6F0.87, Sr2FeO3F and Ba2InFeO5F0.68

(Note: The full text of this document is currently only available in the PDF Version )

G. Simon Case, Andrew L. Hector, William Levason, Richard L. Needs, Michael F. Thomas and Mark T. Weller

Abstract

Sr2FeO3F and the novel phases Sr3Fe2O6F0.87 and Ba2InFeO5F0.68 have been prepared and their structures investigated by powder neutron diffraction methods. Sr2FeO3F crystallises with the T* modification of the K2NiF4 structure owing to oxide/fluoride ordering. Sr3Fe2O6F0.87 and Ba2InFeO5F0.68 are mixed valent phases prepared by reaction of anion deficient iron(III) materials with gaseous fluorine. Sr3Fe2O6F0.87 is a Ruddlesden–Popper type material which has been shown by Mössbauer spectroscopy to contain iron(III) and iron(V). Ba2InFeO5F0.68 is the first example of an iron oxyfluoride with a perovskite-type structure.

References

  1. M. Al-Mamouri, P. P. Edwards, C. Greaves and M. Slaski, Nature (London), 1994, 369, 382 CrossRef CAS.
  2. J. B. McChesney, R. C. Sherwood and J. F. Potter, J. Chem. Phys., 1965, 43, 1908.
  3. Y. Takeda, S. Naka, M. Takano, T. Takada and M. Shimada, Bull. Inst. Chem. Res. Jpn., 1978, 13, 61 Search PubMed.
  4. Y. Takeda, Y. Yamaguchi, H. Takei and H. Wattanabe, J. Solid State Chem., 1977, 42, 101.
  5. S. E. Dann, D. B. Currie, M. T. Weller, M. F. Thomas and A. D. Al-Rawas, J. Solid State Chem., 1994, 109, 134 CrossRef CAS.
  6. J. G. Bednorz and K. A. Müller, Z. Phys. B, 1986, 64, 189 CAS.
  7. S. N. Ruddlesden and P. Popper, Acta Crystallogr., 1957, 10, 538; 1958, 11, 54 Search PubMed.
  8. S. E. Dann, D. B. Currie and M. T. Weller, J. Solid State Chem., 1991, 92, 237 CAS.
  9. S. E. Dann, D. B. Currie and M. T. Weller, J. Solid State Chem., 1992, 97, 179 CrossRef CAS.
  10. S. E. Dann, M. T. Weller, D. B. Currie, M. F. Thomas and A. D. Al-Rawwas, J. Mater. Chem., 1993, 3, 1231 RSC.
  11. R. L. Needs and M. T. Weller, J. Solid State Chem., 1998, 139, 422 CrossRef CAS.
  12. W. Rüdorff and D. Krug, Z. Anorg. Allg. Chem., 1964, 329, 211 CrossRef.
  13. B. L. Chamberland, Mater. Res. Bull., 1971, 6, 311 CAS.
  14. G. Demazeau, J. Grannec, A. Marbeuf, J. Poiter and P. Hagenmuller, C. R. Hebd. Seances Acad. Sci., Ser. C, 1969, 269, 987 Search PubMed.
  15. B. L. Chamberland, ch. 4 in Inorganic Solid Fluorides: Chemistry and Physics, ed. P. Hagenmuller, Materials Science and Technology series, Academic Press, Orlando, FL, 1985 Search PubMed.
  16. R. L. Needs, M. T. Weller, U. Scheler and R. K. Harris, J. Mater. Chem., 1996, 6, 1219 RSC.
  17. F. Galasso and W. Darby, J. Phys. Chem., 1962, 66, 1318 CAS.
  18. F. Menil, N. Kinomura, L. Fournes, J. Poitier and P. Hagenmuller, Phys. Status Solidi A, 1981, 64, 261 CAS.
  19. G. Le Flem, R. Colmet, C. Chaumont, J. Claverie and P. Hagenmuller, Mater. Res. Bull., 1976, 11, 389 CAS.
  20. R. L. Needs and M. T. Weller, J. Chem. Soc., Dalton Trans., 1995, 3015 RSC.
  21. C. Greaves, J. L. Kissick, M. G. Francesconi, L. D. Aikens and L. J. Gillie, J. Mater. Chem., 1999, 9, 111 RSC.
  22. C. S. Knee and M. T. Weller, personal communication. Synthesis was carried out by reaction of the component oxides in a vacuum sealed silica tube lined with an alumina crucible at 1000 °C for two days.
  23. Powder Diffraction File, Release 1998, International Centre for Diffraction Data, Swarthmore, PA 19073-3273, USA.
  24. C. Larson and R. B. Von Dreele, GSAS Generalised Structure Analysis System, MS-H805, Los Alamos, NM, 1990 Search PubMed.
  25. G. J. Long, T. E. Cranshaw and G. Longworth, Mössbauer Effect Ref. Data J., 1983, 6, 42 Search PubMed.
  26. R. Greenhalgh and J. R. Riley, Anal. Chim. Acta, 1961, 25, 179 CAS.
  27. L. Köster, H. Rauch and E. Seymann, At. Data Nucl. Tables, 1991, 49, 65 Search PubMed.
  28. F. Galasso and W. Darby, J. Phys. Chem., 1963, 67, 1451 CAS.
  29. Physica C—Crystal Structures of the High-Tc Superconducting Copper Oxides, ed. H. Shaked, P. M. Keane, J. C. Rodriguez, F. F. Owen, R. L. Hitterman and J. D. Jorgensen, Elsevier, Amsterdam, 1994 Search PubMed.
  30. R. L. Needs, M. F. Thomas and M. T. Weller, in preparation.
  31. (a) D. Brown and D. Altermatt, Acta Crystallogr., Sect. B, 1985, 41, 244 CrossRef; N. E. Brese and M. O'Keefe, Acta Crystallogr., Sect. B, 1991, 47, 192 CrossRef; (b) W. A. Dollase, J. Appl. Crystallogr., 1986, 19, 267 CrossRef CAS; A. Murch, Z. Kristallogr., 1932, 81, 285.
  32. L. Fournes, N. Kinomura and F. Menil, C. R. Acad. Sci., Ser. C, 1980, 291, 235 Search PubMed.
  33. R. L. Needs, Ph.D. thesis, University of Southampton, 1997.
  34. R. D. Shannon, Acta Crystallogr., Sect. A, 1976, 32, 751 CrossRef.
Click here to see how this site uses Cookies. View our privacy policy here.