Abstract
The synthesis and structural characterization of the two new Mn complexes [Mn18O14(O2CMe)(18)(heP)(4)(hepH)(2)(H2O)(2)](ClO4)(2) (1) and [Mn21O16(O2CMe)(16)(hmp)(6)(hmpH)(2)(pic)(2)(py)(H2O)](ClO4)(4) (3) are presented, together with a detailed study of their magnetic properties. Complex 1 possesses a ground-state spin of S = 13, and the ground-state spin for 3 is estimated to be S = 17/2 or 19/2. Both complexes 1 and 3 are new examples of single-molecule magnets (SMMs), displaying frequency-dependent out-of-phase AC signals, as well as magnetization vs. DC field hysteresis at temperatures below 1 K. Complex 1 straddles the classical/quantum interface by also displaying quantum tunneling of the magnetization (QTM). (C) 2003 Elsevier Science Ltd. All rights reserved.
Original language | English |
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Pages (from-to) | 2267-2271 |
Number of pages | 5 |
Journal | Polyhedron |
Volume | 22 |
Issue number | 14-17 |
DOIs | |
Publication status | Published - 15 Jul 2003 |
Keywords / Materials (for Non-textual outputs)
- hysteresis
- Mn clusters
- quantum tunneling
- single-molecule magnets
- HIGH-SPIN MOLECULES
- OXIDATION-STATE
- MAGNETIZATION
- MANGANESE
- COMPLEXES
- CLUSTER
- FAMILY