Back to Search
Start Over
Ferromagnetically coupled single-chain magnets exhibiting a magnetic hysteresis of 0.42 Tesla in cyano-bridged FeIII2M II (M = Ni, Fe) coordination polymers.
- Source :
-
Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2023 Oct 31; Vol. 52 (42), pp. 15510-15517. Date of Electronic Publication: 2023 Oct 31. - Publication Year :
- 2023
-
Abstract
- The synthesis, single-crystal structures and magnetic properties of two new double-zigzag-chain cyano-bridged heterobimetallic {[M <superscript>II</superscript> (Py-NOH) <subscript>2</subscript> ][Fe <superscript>III</superscript> (Tp*)(CN) <subscript>3</subscript> ] <subscript>2</subscript> }·H <subscript>2</subscript> O ([FeIII2M <superscript>II</superscript> ]) (Py-NOH = 4-pyridinealdoxime, Tp* = tris(3,5-dimethylpyrazol-1-yl)borohydride, M = Ni (1), Fe (2)) compounds are reported. The crystal structures of both compounds were determined by single-crystal X-ray diffraction. Complexes 1 and 2 are isostructural, with the crystal structure comprising neutral double-zigzag (4,2-ribbon-like) bimetallic chains. The Fe <superscript>III</superscript> ion is coordinated by three cyanide carbon atoms and three nitrogen atoms of Tp* anions. However, the M <superscript>II</superscript> ion is surrounded by four cyanide nitrogen atoms and two nitrogen atoms from two Py-NOH ligands. The crystal structures and magnetic studies demonstrate that both complexes behave as single-chain magnetics (SCMs) with intrachain ferromagnetic coupling. Furthermore, [FeIII2Ni <superscript>II</superscript> ] exhibits an excellent coercive field of 0.42 T at 1.8 K, among cyano-bridged 3d transition-metal-based SCMs reported thus far. Preliminary theoretical calculations provide a deep understanding of the magnetic properties of [FeIII2Ni <superscript>II</superscript> ].
Details
- Language :
- English
- ISSN :
- 1477-9234
- Volume :
- 52
- Issue :
- 42
- Database :
- MEDLINE
- Journal :
- Dalton transactions (Cambridge, England : 2003)
- Publication Type :
- Academic Journal
- Accession number :
- 37581269
- Full Text :
- https://doi.org/10.1039/d3dt01043k