Nickel(II)–Lanthanide(III) Magnetic Exchange Coupling Influencing Single‐Molecule Magnetic Features in {Ni2Ln2} Complexes |
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| Authors: | Naushad Ahmed Chinmoy Das Shefali Vaidya Dr Stuart K Langley Prof?Dr Keith S Murray Prof?Dr Maheswaran Shanmugam |
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| Institution: | 1. Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, Maharashtra, 400076 (India);2. School of Chemistry, Monash University, Clayton, Victoria‐3800 (Australia) |
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| Abstract: | Four isostructural Ni2Ln2(CH3CO2)3(HL)4(H2O)2]3+(Ln3+=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 Ueff of 19 K. |
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| Keywords: | dysprosium magnetism nickel single‐molecule magnet X‐ray diffraction |
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