| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1310799 | Inorganica Chimica Acta | 2012 | 4 Pages |
In this work, we present a detailed AC magnetic susceptibility investigation of the metamagnet {[Mn(OH)(CH3CO2)2]·CH3CO2H·H2O}∞ (1). Compound 1 was previously reported and the magnetic properties were investigated. The data revealed that the compound is a linear-chain antiferromagnet with a phase transition at TN = 6.1 K to an ordered antiferromagnetic state and a metamagnetic transition at approximately 1000 Oe from the antiferromagnetic phase to a paramagnetic phase. In this new study we report detailed AC susceptibility measurements which reveal frequency dependent data indicative of a slow relaxation process which was not previously described. These additional magnetic data support the conclusion that this compound is a rare example of an antiferromagnetic ordered system that displays magnetic relaxation properties induced by the intrinsic single chain magnet (SCM) properties of the canted homospin chains composing the material.
Graphical abstractDissolution of crystals in a mixture of acetic acid and nitromethane of the Mn-12 acetate single molecule magnet produce MnO2 precipitate along with an “unzipped” chain-form of the Mn(III) acetate moieties that comprise the outer ring in the original molecule which behaves as a canted, homospin single chain magnet.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Decomposition of the SMM Mn-12 acetate produces crystals of a chain compound. ► A chain compound prepared from the SMM Mn-12 acetate exhibits slow relaxation. ► Magnetic ordering in a chain of Mn(III) ions bridged by acetate and hydroxide.
