V(IV)O-Ln(III) complexes (Ln = La, Eu or Gd) of the compartmental ligand N,N′-bis(3-hydroxysalicylidene)ethylenediamine

Masatomi Sakamoto, Takashi Ishikawa, Yuzo Nishida, Yoshihiko Sadaoka, Akira Matsumoto, Yutaka Fukuda, Masahiro Sakai, Masaaki Ohba, Hiroshi Sakiyama, Hisashi Okawa

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Abstract

Mononuclear oxovanadium(IV) complex VO(H2dhbaen) and heteronuclear oxovanadium(IV)-lanthanide(III) complexes VOLn(dhbaen)(NO3)(H2O)2.5 were synthesized, where H4dhbaen denotes N,N′-bis(3-hydroxysalicylidene)ethylenediamine. IR spectra showed that V(IV)O and Ln(III) ions are located at the endogenous N2O2- and the exogeneous O4-coordination sites of the ligand respectively. Based on circular dichroism (CD) spectra, it was suggested that amino alcohols are specifically bound at the VO-Ln heterometal center, through the nitrogen to the VO-site and through the oxygen to the Ln-site. Magnetic susceptibility measurements in the range 4.2 to 260 K revealed that the magnetic interaction between V(IV)O and Gd(III) ions is almost negligible. The fluorescence intensity of mononuclear Eu(III) complex markedly decreased on forming the heteronuclear V(IV)O-Eu(III) complex.

Original languageEnglish
Pages (from-to)23-27
Number of pages5
JournalJournal of Alloys and Compounds
Volume238
Issue number1-2
DOIs
Publication statusPublished - May 1 1996

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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    Sakamoto, M., Ishikawa, T., Nishida, Y., Sadaoka, Y., Matsumoto, A., Fukuda, Y., Sakai, M., Ohba, M., Sakiyama, H., & Okawa, H. (1996). V(IV)O-Ln(III) complexes (Ln = La, Eu or Gd) of the compartmental ligand N,N′-bis(3-hydroxysalicylidene)ethylenediamine. Journal of Alloys and Compounds, 238(1-2), 23-27. https://doi.org/10.1016/0925-8388(96)02226-8