1. A new family of octanuclear Cu4Ln4 (Ln = Gd, Tb and Dy) spin clusters
- Author
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Kerwyn G. Alley, Rodolphe Clérac, Colette Boskovic, Arindam Mukherjee, School of Chemistry [Wollongong], University of Wollongong [Australia], Centre de recherches Paul Pascal (CRPP), and Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Lanthanide ,Magnetisme ,010405 organic chemistry ,Chemistry ,[CHIM.MATE]Chemical Sciences/Material chemistry ,010402 general chemistry ,01 natural sciences ,Magnetic susceptibility ,Chimie de coordination ,3. Good health ,0104 chemical sciences ,Inorganic Chemistry ,Structure moléculaire ,Crystallography ,Nuclear magnetic resonance ,Ferromagnetism ,Crystal field theory ,Intramolecular force ,Single-molecule magnet ,Isostructural ,Ground state - Abstract
5 pages; International audience; The reaction of Cu(OAc)2 and Ln(OAc)3 (Ln = Gd, Tb and Dy) with 2-amino-2-methyl-1,3- propanediol (ampdH2) under solvothermal conditions has afforded a new family of isostructural octanuclear Cu4Ln4 complexes with the formula [Cu4Ln4(OAc)12(ampdH)8(OH2)2] (Ln = Gd (1), Tb (2) and Dy(3)) in good yield. Variable temperature magnetic susceptibility measurements reveal weak intramolecular exchange interactions for 1 and 2. Ferromagnetic coupling is observed for 1 and attributed to Cu · · ·Gd interactions. In contrast, the magnetic susceptibility behaviour of 2 arises from a combination of intramolecular exchange interactions and the crystal field splitting of the 7F6 ground state of the TbIII ions.
- Published
- 2008
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