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Pure trinuclear 4f single-molecule magnets: synthesis, structures, magnetism and ab initio investigation
- Source :
- Chemistry (Weinheim an der Bergstrasse, Germany). 17(8)
- Publication Year :
- 2010
-
Abstract
- A family of linear Dy3 and Tb3 clusters have been facilely synthesized from the reactions of DyCl3, the polydentate 3-methyloxysalicylaldoxime (MeOsaloxH2) ligand with auxiliary monoanionic ligands, such as trichloroacetate, NO3−, OH−, and Cl−. Complexes 1–5 contain a nearly linear Ln3 core, with similar Ln⋅⋅⋅Ln distances (3.6901(4)–3.7304(3) Å for the Dy3 species, and 3.7273(3)–3.7485(5) Å for the Tb3 species) and Ln⋅⋅⋅Ln⋅⋅⋅Ln angles of 157.036(8)–159.026(15)° for the Dy3 species and 157.156(8)–160.926(15)° for the Tb3 species. All three Ln centers are bridged by the two doubly-deprotonated [MeOsalox]2− ligands and two of the four [MeOsaloxH]− ligands through the N,O-η2-oximato groups and the phenoxo oxygen atoms (Dy-O-Dy angles=102.28(16)–106.85(13)°; Tb-O-Tb angles=102.00(11)–106.62(11)°). The remaining two [MeOsaloxH]− ligands each chelate an outer LnIII center through their phenoxo oxygen and oxime nitrogen atoms. Magnetic studies reveal that both Dy3 and Tb3 clusters exhibit significant ferromagnetic interactions and that the Dy3 species behave as single-molecule magnets, expanding upon the recent reports of the pure 4f type SMMs. ispartof: Chemistry - a European Journal vol:17 issue:8 pages:2458-2466 ispartof: location:Germany status: published
- Subjects :
- Models, Molecular
Denticity
Magnetism
Inorganic chemistry
Ab initio
Molecular Conformation
chemistry.chemical_element
Crystallography, X-Ray
Lanthanoid Series Elements
Catalysis
chemistry.chemical_compound
Magnetics
Molecule
dysprosium
single-molecule magnets
ab initio investigation
Molecular Structure
Ligand
Organic Chemistry
General Chemistry
Oxime
Crystallography
chemistry
Ferromagnetism
Dysprosium
Thermodynamics
cluster compounds
magnetic properties
Iron Compounds
Subjects
Details
- ISSN :
- 15213765
- Volume :
- 17
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- Chemistry (Weinheim an der Bergstrasse, Germany)
- Accession number :
- edsair.doi.dedup.....81e169141d72c62a248834f96cd9050e