Advertisement

Russian Chemical Bulletin

, Volume 57, Issue 6, pp 1198–1205 | Cite as

Polynuclear mixed-ligand NiII complexes containing pivalate and hexafluoroacetylacetonate ligands: a new single-molecule magnet

  • E. Yu. Fursova
  • O. V. Kuznetsova
  • V. I. Ovcharenko
  • G. V. Romanenko
  • A. S. Bogomyakov
Article

Abstract

The reaction of NiCl2 with excess potassium pivalate (KPiv) in ethanol affords the chainpolymeric compound KNi4(Piv)7(OH)2(EtOH)6. In the solid compound, the tetranuclear nickel fragments alternate with potassium atoms. The use of KNi4(Piv)7(OH)2(EtOH)6 in the reaction with Ni(hfac)2 (hfac is the hexafluoroacetylacetonate anion) gave the first polynuclear mixed-ligand complexes [K2Ni6(Piv)7(hfac)3(OH)4(HPiv)2(Me2CO)2]·1.5C7H16, [Ni6(Piv)4(hfac)4(OH)4(Me2CO)4], [K2Ni8(Piv)8(hfac)4(OH)6(H2O)2(Me2CO)6], [Ni8(Piv)10(hfac)2(OH)2(MeO)2(MeOH)2(HPiv)2]·C6H14, and [Ni16(Piv)10(hfac)6(OH)10(MeO)6(MeOH)8(H2O)6]·C6H14 containing both Piv and hfac as the anionic ligands. The molecular and crystal structures of all these compounds were established, and their magnetic properties were studied. All solids containing simultaneously Piv and hfac ligands tend to undergo ferromagnetic ordering with decreasing temperature. The solid [Ni8(Piv)10(hfac)2(OH)2(MeO)2(MeOH)2(HPiv)2]·C6H14 undergoes cooperative magnetic ordering below T c (2.5 K).

Key words

nickel(iipolynuclear compounds pivalates hexafluoroacetylacetonates X-ray diffraction study magnetic measurements 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    E. Fursova, O. Kuznetsova, G. Romanenko, Yu. Schvedenkov, V. Ovcharenko, J. Clust. Science, 2005, 16, 319.CrossRefGoogle Scholar
  2. 2.
    E. Yu. Fursova, O. V. Kuznetsova, G. V. Romanenko, V. I. Ovcharenko, Izv. Akad. Nauk, Ser. Khim., 2006, 1863 [Russ. Chem. Bull., Int. Ed., 2006, 55, 1933].Google Scholar
  3. 3.
    G. G. Aleksandrov, A. A. Sidorov, I. L. Eremenko, Tez. dokl. XXIII Mezhdunar. Chugaevskoi konf. po koordinatsionnoi khimii [Abstrs. of Papers, XXIII Int. Chugaev Conf. on Coordination Chemistry] (September 4–7, 2007, Odessa), Odessa, 2007, p. 66 (in Russian).Google Scholar
  4. 4.
    A. A. Sidorov, G. G. Aleksandrov, I. L. Eremenko, Tez. dokl. I Mezhdunar. konf. “Fiziko-khimicheskie metody issledovaniya nanoob″ektov v khimii, biologii i meditsine“ [Abstrs. of Papers, I International Conf. “Physicochemical Studies of Nanomaterials in Chemistry, Biology, and Medicine“] (October 3–9, 2007, Tuapse), Tuapse, 2007, p. 18 (in Russian).Google Scholar
  5. 5.
    A. A. Sidorov, G. G. Aleksandrov, I. L. Eremenko, Tez. dokl. III Mezhdunar. konf. “Vysokospinovye molekuly i molekulyarnye magnetiki” [Abstrs. of Papers, III International Conf. “High-Spin Molecules and Molecular Magnets”] (June 13–16, 2006, Ivanovo), Ivanovo, 2006, p. 25 (in Russian).Google Scholar
  6. 6.
    A. A. Sidorov, I. G. Fomina, S. S. Talismanov, G. G. Aleksandrov, V. M. Novotortsev, S. E. Nefedov, I. L. Eremenko, Koord. Khim., 2001, 27, 584 [Russ. J. Coord. Chem., 2001, 27 (Engl. Transl.)].Google Scholar
  7. 7.
    G. Chaboussant, R. Basler, H.-U. Güdel, S. Ochsenbein, A. Parkin, S. Parsons, G. Rajaraman, A. Sieber, A. A. Smith, G. A. Timco, R. E. P. Winpenny, Dalton Trans., 2004, 2758.Google Scholar
  8. 8.
    N. P. Kuz′mina, Zoan An′Tu, A. P. Pisarevskii, L. I. Martynenko, Yu. T. Struchkov, Koord. Khim., 1994, 20, 712 [Russ. J. Coord. Chem., 1994, 20 (Engl. Transl.)].Google Scholar
  9. 9.
    O. S. Manole, A. S. Batsanov, Yu. T. Struchkov, G. A. Timko, L. D. Synzheryan, N. V. Gerbeleu, Koord. Khim., 1994, 20, 231 [Russ. J. Coord. Chem., 1994, 20 (Engl. Transl.)].Google Scholar

Copyright information

© Springer Science+Business Media, Inc.  2008

Authors and Affiliations

  • E. Yu. Fursova
    • 1
  • O. V. Kuznetsova
    • 1
    • 2
  • V. I. Ovcharenko
    • 1
    • 2
  • G. V. Romanenko
    • 1
  • A. S. Bogomyakov
    • 1
  1. 1.International Tomography CenterSiberian Branch of the Russian Academy of SciencesNovosibirskRussian Federation
  2. 2.Novosibirsk State UniversityNovosibirskRussian Federation

Personalised recommendations