6533b855fe1ef96bd12b13f0
RESEARCH PRODUCT
Solid-state dinuclear-to-trinuclear conversion in an oxalato-bridged chromium(III)-cobalt(II) complex as a new route toward single-molecule magnets.
Maria Del Pino Déniz-hernándezJesús Ferrando-soriaMiguel JulveRafael Ruiz-garcíaFrancesc LloretCatalina Ruiz‐pérezJulia VallejoIsabel CastroJoan Canosubject
chemistry.chemical_classificationChromiumModels MolecularOxalatesSolid-stateMolecular Conformationchemistry.chemical_elementSalt (chemistry)StereoisomerismStereoisomerismCobaltInorganic ChemistryCrystallographyBipyridinechemistry.chemical_compoundChromiumMagneticschemistryOrganometallic CompoundsMoleculePhysical and Theoretical ChemistryGround stateCobaltdescription
A novel bis(oxalato)chromium(III) salt of a ferromagnetically coupled, oxalato-bridged dinuclear chromium(III)-cobalt(II) complex of formula [CrL(ox)(2)CoL'(H(2)O)(2)][CrL(ox)(2)]·4H(2)O (1) has been self-assembled in solution using different aromatic α,α'-diimines as blocking ligands, such as 2,2'-bipyridine (L = bpy) and 2,9-dimethyl-1,10-phenanthroline (L' = Me(2)phen). Thermal dehydration of 1 leads to an intriguing solid-state reaction between the S = 3/2 Cr(III) anions and the S = 3 Cr(III)Co(II) cations to give a ferromagnetically coupled, oxalato-bridged trinuclear chromium(III)-cobalt(II) complex of formula {[CrL(ox)(2)](2)CoL'} (2). Complex 2 possesses a moderately anisotropic S = 9/2 Cr(III)(2)Co(II) ground state, and it exhibits slow magnetic relaxation behavior at very low temperatures (T(B) < 2.0 K).
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-02-01 | Inorganic chemistry |