Mn III(tetra-biphenyl-porphyrin)-TCNE single-chain magnet via suppression of the interchain interactions

Ryuta Ishikawa, Keiichi Katoh, Brian K. Breedlove, Masahiro Yamashita

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


A single-chain magnet (SCM) of [Mn(TBPP)(TCNE)] ·4m-PhCl 2 (1), where TBPP 2- = meso-tetra(4-biphenyl)porphyrinate; TCNE ·- = tetracyanoethenide radical anion; m-PhCl 2 = meta-dichlorobenzene, was prepared via suppression of interchain interactions. 1 has a one-dimensional alternating Mn III(porphrin)-TCNE ·-chain structure similar to those of a family of complexes reported by Miller and co-workers. From a comparison of the static magnetic properties of 1 with other Mn III(porphyrin)-TCNE ·- chains, a magneto-structural correlation between the intrachain magnetic exchange and both the dihedral angle between the mean plane on [Mn(TBPP)(TCNE)] and Mn-N≡C was observed. The ac magnetic susceptibility data of 1 could be fit with the Arrhenius law, indicating that slow magnetic relaxation and ruling out three-dimensional long-range ordering and spin-glass-like behavior. The Cole-Cole plot for 1 was semicircular, verifying that it is an SCM. Therefore, 1 is an ideal single-chain magnet with significantly strong intrachain magnetic exchange interactions beyond the Ising limit.

Original languageEnglish
Pages (from-to)9123-9131
Number of pages9
JournalInorganic chemistry
Issue number16
Publication statusPublished - 2012 Aug 20

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry


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