Syntheses, structures, and magnetic properties of cubane-based cobalt and nickel complexes with ONO-tridentate ligands

Megumi Yoshitake, Momoko Nishihashi, Yasumasa Ogata, Ko Yoneda, Yasunori Yamada, Hiroshi Sakiyama, Akio Mishima, Masaaki Ohba, Masayuki Koikawa

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Three types of cubane-based complexes, [Co4(L1-H)4Cl2(MeOH)2] (1) [H2L1-H = N-(2-hydroxymethylphenyl)salicylideneimine], [Ni4(L1-Bz)4(EtOH)4] (2) [H2L1-Bz = N-(2-hydroxymethylphenyl)-5,6-benzosalicylideneimine], and [Co2Ni(L1-H)2(HL1-H)(CH3COO)2] (3), have been characterized by X-ray crystal structure analyses and magnetic measurements. Homo-metal complexes 1 and 2 are tetranuclear complexes. Complex 1 has a defective double-cubane metal core. The valence state of cobalt ions is assigned to mixed valence Co(II)2Co(III)2. On the contrary, 2 takes a simple cubane core comprised of four [Ni(II)(L1-Bz)] monomer units. Complex 3 has a novel hetero-metal and mixed-valence trinuclear metal core structure. Cryomagnetic studies for 1–3 indicate that ferromagnetic interactions are dominate due to the cubane-based metal core structures.

Original languageEnglish
Pages (from-to)136-142
Number of pages7
JournalPolyhedron
Volume136
DOIs
Publication statusPublished - Nov 4 2017

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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    Yoshitake, M., Nishihashi, M., Ogata, Y., Yoneda, K., Yamada, Y., Sakiyama, H., Mishima, A., Ohba, M., & Koikawa, M. (2017). Syntheses, structures, and magnetic properties of cubane-based cobalt and nickel complexes with ONO-tridentate ligands. Polyhedron, 136, 136-142. https://doi.org/10.1016/j.poly.2017.03.043