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 language | English |
|---|---|
| Pages (from-to) | 2252-2258 |
| Number of pages | 7 |
| Journal | Polyhedron |
| Volume | 26 |
| Issue number | 9-11 |
| DOIs | |
| Publication status | Published - Jun 15 2007 |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - A unique 2-D hollow sheet structure and magnetic behavior of a cyanide- and triamine-bridged MnIICrIII ferrimagnet
AU - Kaneko, Wakako
AU - Kitagawa, Susumu
AU - Ohba, Masaaki
PY - 2007/6/15
Y1 - 2007/6/15
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=34249699659&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34249699659&partnerID=8YFLogxK
U2 - 10.1016/j.poly.2006.11.037
DO - 10.1016/j.poly.2006.11.037
M3 - Article
AN - SCOPUS:34249699659
VL - 26
SP - 2252
EP - 2258
JO - Polyhedron
JF - Polyhedron
SN - 0277-5387
IS - 9-11
ER -