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Abstract
We report the synthesis and magnetic properties of three hexametallic Mn clusters: [Mn6O2(Et-sao)(6)(O2C-Naphth) (2)(EtOH)(4)(H2O)(2)] (1) (HO2C-Naphth = 1-naphthoic acid, Et-saoH(2) = 2-hydroxyphenylpropanone oxime), [Mn6O2(Et-sao)(6)(O2C-Anthra)(2)(EtOH)(4)(H2O)(2)] center dot 0.66EtOH center dot 0.33H(2)O (HO2C-Anthra = anthracene-- carboxylic acid) (2 center dot 0.66EtOH center dot 0.33H(2)O) and [Mn6O2(Et-sao)(6)(O2CPhC CH)(2)(EtOH)(4)(H2O)(2)] center dot 1.7EtOH center dot 0.3H(2)O (HO2CPhC CH = 4-ethynylbenzoic acid) (3 center dot 1.7EtOH center dot 0.3H(2)O). Clusters 1-3 exhibit ferromagnetic exchange between all six Mn-III centres resulting in S = 12 ground spin states. Ac magnetic susceptibility and single crystal micro-SQUID measurements on 1-3 confirm SMM behaviour with barriers to magnetisation reversal of 60.12 (1), 60.10 (2) and 66.79 (3) K. (c) 2008 Elsevier B. V. All rights reserved.
Original language | English |
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Pages (from-to) | 3420-3426 |
Number of pages | 7 |
Journal | Inorganica Chimica Acta |
Volume | 361 |
Issue number | 12-13 |
DOIs | |
Publication status | Published - 1 Sept 2008 |
Keywords / Materials (for Non-textual outputs)
- clusters
- magnetism
- X-ray structures
- single-molecule magnets
- hysteresis
- manganese
- MANGANESE CARBOXYLATE
- CLUSTERS
- OXIMES
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