Synthesis, structure, and magnetic properties of a hexanuclear manganese complex

Chen I. Yang, Yu Jhe Tsai, George Chung, Ting Shen Kuo, Minghuey Shieh, Hui Lien Tsai

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6 Citations (Scopus)

Abstract

The reaction of 1-(2-pyridyl)-3-(p-tolyl)propane-1,3-dione (HL) with [Mn3O(O2CPh)6(H2O)(py)2] in CH2Cl2 affords a mixed-valence Mn3II Mn3III hexanuclear complex [Mn6O2(O2CPh)8L3] (1). Complex 1 contains a [Mn3II Mn3III4 - O)2]11 + core, which is a new structural type in the family of Mn6 complexes. Variable temperature magnetic susceptibility and magnetization measurement of complex 1 have been carried out. The magnetic data indicate that complex 1 has a ground state spin value of S = 7/2 with significant magnetoanisotropy as gauged by the D value of -0.46 cm-1. The frequency dependence of the out-of-phase component in alternating current magnetic susceptibilities for complex 1 indicates the slow magnetic relaxation of a superparamagnetic molecule.

Original languageEnglish
Pages (from-to)1805-1810
Number of pages6
JournalPolyhedron
Volume26
Issue number9-11
DOIs
Publication statusPublished - 2007 Jun 15

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Keywords

  • Hexanuclear manganese complex
  • Magnetic anisotropy
  • Nanoscale magnet
  • Single-molecule magnet
  • Superparamagnet
  • β-diketonate ligand

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Yang, C. I., Tsai, Y. J., Chung, G., Kuo, T. S., Shieh, M., & Tsai, H. L. (2007). Synthesis, structure, and magnetic properties of a hexanuclear manganese complex. Polyhedron, 26(9-11), 1805-1810. https://doi.org/10.1016/j.poly.2006.09.061