Skip to main content
SpringerLink
Log in

Relationship between 237Np Mössbauer parameters and bond distances in nitrogen coordinated [NpO2(acac)2py]

  • Published:
Hyperfine Interactions Aims and scope Submit manuscript

Abstract

We now report the 237Np Mössbauer spectra for [NpO2(acac)2py] I. The neptunium(VI) ion in I is coordinated by six oxygen atoms and the one nitrogen atom of pyridine. The isomer shift value obtained for I is −40 mm/s, which falls in the range for the Np(VI) oxidation state. The relationship between the isomer shift and Np–O bond distance of the neptunyl group for oxygen coordination compounds is in good agreement with the reported structure of I. It is well known that the mean Np–O bond distance of the neptunium compounds is shorter by 0.01 Å than that of analogous uranium compounds. The good agreement in the 237Np–Mössbauer parameters and the Np–O distance has indicated that the reported analogous [UO2(acac)2py] structure may have some inaccuracies. Therefore, we have re-determined the crystal structure of [UO2(acac)2py]. The U–O bond distance we have obtained is reasonable.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Dunlap, B.D., Kalvius, G.M.: In: Freeman, A.J., Lander, G.H. (eds) Handbook on the Physics and Chemistry of Actinides, pp. 329–434. Elsevier Science Publishers B.V. (1985)

  2. Jové, J., He, L., Proust, J., Pagés, M., Pyykkö, P.: J. Alloys Compd. 177, 285–310 (1991)

    Article  Google Scholar 

  3. Alcock, N.W., Flanders, D.J., Pennington, M.: Acta Crystallogr. C43, 1476–1480 (1987)

    Google Scholar 

  4. Alcock, N.W., Flanders, D.J.: J. Chem. Soc. Dalton Trans. 679–681 (1984)

  5. Saito, T., Wang, J., Kitazawa, T., Takahashi, M., Takeda, M., Nakada, M., Nakamoto, T., Masaki, N.M., Yamashita, T., Saeki, M.: J. Radioanal. Nucl. Chem. 239(2), 319–323 (1999)

    Article  Google Scholar 

  6. Wang, J., Kitazawa, T., Nakada, M., Yamashita, T., Takeda, M.: J. Nucl. Sci. Technol. Suppl. 3, 429–432 (2002)

    Google Scholar 

  7. Nakada, M., Kitazawa, T., Saito, T., Wang, J., Takeda, M., Yamashita, T., Saeki, M.: Bull. Chem. Soc. Jpn. 76, 1375–1378 (2003)

    Article  Google Scholar 

  8. Wang, J., Kitazawa, T., Nakada, M., Yamashita, T., Takeda, M.: Bull. Chem. Soc. Jpn. 75, 253–257 (2002)

    Article  Google Scholar 

  9. Saeki, M., Nakada, M., Nakamoto, T., Yamashita, T., Masaki, N.M., Krot, N.N.: J. Radioanal. Nucl. Chem. 239(2), 221–225 (1999)

    Article  Google Scholar 

  10. Saeki, M.: J. Crystal Soc. Jpn.(Nippon Kessho Gakkaishi) 46, 415–420 (2004)

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba, 274-8510, Japan

    Takeshi Kawasaki, Takafumi Kitazawa & Tatsuru Nishimura

  2. Research Center for Materials with Integrated Properties, Toho University, Miyama, Funabashi, Chiba, 274-8510, Japan

    Takafumi Kitazawa

  3. Department of Materials Science, Tokai Research Establishment, Japan Atomic Energy Research Institute (JAERI), 2-4 Shrane, Tokai mura, Naka-gun, Ibaraki, 319-1195, Japan

    Masami Nakada & Masakatsu Saeki

Authors
  1. Takeshi Kawasaki
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Takafumi Kitazawa
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Tatsuru Nishimura
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Masami Nakada
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Masakatsu Saeki
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Takafumi Kitazawa.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Kawasaki, T., Kitazawa, T., Nishimura, T. et al. Relationship between 237Np Mössbauer parameters and bond distances in nitrogen coordinated [NpO2(acac)2py]. Hyperfine Interact 166, 417–423 (2005). https://doi.org/10.1007/s10751-006-9302-9

Download citation

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10751-006-9302-9

Key words

Search

Navigation