期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 20, 期 44, 页码 14235-14239出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201404393
关键词
dysprosium; magnetism; nickel; single-molecule magnet; X-ray diffraction
资金
- DST [SR/S1/IC-32/2011]
- DST nanomission [SR/NM/NS-1119/2011]
- IIT Bombay
- Australian Research Council
- Australia-India AISRF
Four isostructural [Ni(2)Ln(2)(CH3CO2)(3)(HL)(4)(H2O)(2)](3+)(Ln(3+)=Dy (1), Tb (2), Ho (3) or Lu (4)) complexes and a dinuclear [NiGd(HL)(2)(NO3)(3)] (5) complex are reported (where HL=2-methoxy-6-[(E)-2-hydroxymethyl-phenyliminomethyl]-phenolate). For compounds 1-3 and 5, the Ni2+ ions are ferromagnetically coupled to the respective lanthanide ions. The ferromagnetic coupling in 1 suppresses the quantum tunnelling of magnetisation (QTM), resulting in a rare zero dc field Ni-Dy single-molecule magnet, with an anisotropy barrier U-eff of 19K.
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