A unique 2-D hollow sheet structure and magnetic behavior of a cyanide- and triamine-bridged MnIICrIII ferrimagnet

Wakako Kaneko, Susumu Kitagawa, Masaaki Ohba

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A 2-D cyanide- and triamine-bridged MnIICrIII ferrimagnet, [Mn3(dien)2(H2O)2][Cr(CN)6]2 · 4H2O (1), has been prepared by the combination of Mn2+, diethylenetriamine (dien) co-ligand and [Cr(CN)6]3-. This compound forms a unique 2-D hollow sheet structure constructed by 1-D ribbon networks on the basis of triamine (dien)-bridged trinuclear MnII units. Compound 1 readily looses all lattice water molecules and irreversibly changes to a dehydrated form, [Mn3(dien)2(H2O)2][Cr(CN)6]2 (1a), in the air. Cryomagnetic studies of 1 and 1a reveal an antiferromagnetic interaction between CrIII and MnII ions, and an unusual long-range ferrimagnetic ordering below 30 K (1) and 40 K (1a) with multiple magnetic phase changes below TC. MCD spectra of 1a show a strong Faraday ellipticity associated with the LMCT band of the Cr-CN below 300 nm. Faraday ellipticity is remarkably enhanced below TC in line with the characteristics long-range ferrimagnetic ordering.

Original languageEnglish
Pages (from-to)2252-2258
Number of pages7
JournalPolyhedron
Volume26
Issue number9-11
DOIs
Publication statusPublished - Jun 15 2007
Externally publishedYes

Fingerprint

ferrimagnets
Magnets
Cyanides
cyanides
ellipticity
hollow
Ligands
Molecules
Ions
Air
ribbons
Water
ligands
air
water
molecules
ions
interactions
diethylenetriamine

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

A unique 2-D hollow sheet structure and magnetic behavior of a cyanide- and triamine-bridged MnIICrIII ferrimagnet. / Kaneko, Wakako; Kitagawa, Susumu; Ohba, Masaaki.

In: Polyhedron, Vol. 26, No. 9-11, 15.06.2007, p. 2252-2258.

Research output: Contribution to journalArticle

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