The structures and magnetism of trinuclear Ni(II), Co(II) and Mn(II) complexes derived from unsymmetrical compartmental ligands

Harry Adams, David E. Fenton, Laura R. Cummings, Paul E. McHugh, Masaaki Ohba, Hisashi Okawa, Hiroshi Sakiyama, Takuya Shiga

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19 Citations (Scopus)

Abstract

Trinuclear Ni(II), Co(II) and Mn(II) complexes have been prepared from the asymmetric compartmental proligands 2-alkyliminomethyl-4-methyl-6-{[methyl-(2- pyridin-2-yl-ethyl)-amino]-methyl}-phenol(alkyl=ethyl, n-propyl and n-butyl) and 2-[(2-methoxy-ethylimino)-methyl]-4-methyl-6-{[methyl-(2-pyridin-2-yl-ethyl)- amino]-methyl}-phenol, which provide adjacent tridentate N2O and bidentate NO donor sets. The crystal structures of [Ni3(L 6)2(OAc)2(NCS)2]·CH 3OH·H2O, [Co3(L4) 2(OAc)2(NCS)2], and [Mn3(L 7)2(OAc)2(NCS)2]·CH 3OH·H2O were determined and show that the metals provide an isosceles triangle with M1-M2=M 1-M3≈3.2 Å and M2-M3≈5.0 Å. The cryomagnetic properties of the complexes have been studied and indicate a weak antiferromagnetic interaction between the adjacent, M 1M2 and M1M3 ions with little magnetic interaction between the terminal M2M3 ions.

Original languageEnglish
Pages (from-to)3648-3656
Number of pages9
JournalInorganica Chimica Acta
Volume357
Issue number12
DOIs
Publication statusPublished - Sep 10 2004

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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