Magnetic and theoretical characterization of a ferromagnetic Mn(III) dimer

G Rajaraman, E C Sanudo, M Helliwell, S Piligkos, W Wernsdorfer, G Christou, E K Brechin

Research output: Contribution to journalArticlepeer-review

Abstract

Reaction of 1,1,1-tris(hydroxymethyl)ethane (H(3)thme) with the complex [Mn2O2(bPY)(4)](CIO4)(3) produces the dimeric species [Mn-2(Hthme)(2)(bpy)(2)](CIO4)(2) in high yield. Magnetic measurements in the temperature range 1.8-300 K and in fields up to 7 T reveal weak ferromagnetic exchange between the metal centres with J = + 2.13 cm(-1). A fit of the magnetization data, assuming only the ground state is Populated, gives S = 4, g = 1.71 and D = -0.65 cm(-1). Low temperature single crystal measurements suggest the co-existence of SMM behaviour and strong intermolecular interactions. Density functional calculations also support a weak exchange interaction between the Mn ions. (c) 2005 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)2450-2454
Number of pages5
JournalPolyhedron
Volume24
Issue number16-17
DOIs
Publication statusPublished - 17 Nov 2005

Keywords

  • manganese
  • SMM
  • tripodal ligands
  • magnetism
  • SINGLE-MOLECULE MAGNETS
  • GROUND-STATE
  • CLUSTERS
  • EXCHANGE
  • FAMILY

Fingerprint

Dive into the research topics of 'Magnetic and theoretical characterization of a ferromagnetic Mn(III) dimer'. Together they form a unique fingerprint.

Cite this