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Nickel(II)-Lanthanide(III) Magnetic Exchange Coupling Influencing Single-Molecule Magnetic Features in {Ni(2)Ln(2)} Complexes

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Title Nickel(II)-Lanthanide(III) Magnetic Exchange Coupling Influencing Single-Molecule Magnetic Features in {Ni(2)Ln(2)} Complexes
 
Creator AHMED, N
DAS, C
VAIDYA, S
LANGLEY, SK
MURRAY, KS
SHANMUGAM, M
 
Subject dysprosium
magnetism
nickel
single-molecule magnet
X-ray diffraction
GD-III
DY-III
DILANTHANIDE COMPLEXES
LANTHANIDE COMPLEXES
SLOW RELAXATION
SCHIFF-BASE
NI-II
BEHAVIOR
TB
SPIN
 
Description 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.
 
Publisher WILEY-V C H VERLAG GMBH
 
Date 2014-12-28T12:45:52Z
2014-12-28T12:45:52Z
2014
 
Type Article
 
Identifier CHEMISTRY-A EUROPEAN JOURNAL, 20(44)14235-14239
0947-6539
1521-3765
http://dx.doi.org/10.1002/chem.201404393
http://dspace.library.iitb.ac.in/jspui/handle/100/16589
 
Language English