An antiferromagnetically coupled dimeric Ni(II) complex anion and its counter cationic monomeric Ni(II) complex, and some other mononuclear transition metal compounds using some neutral ligands

Bhaskar Biswas, Abhijit Pal, G. Rama Krishna, C. Malla Reddy, Floriana Tuna, Rajarshi Ghosh

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Synthesis and single crystal X-ray diffraction studies of four transition metal complexes [Mn(L1)](ClO4)2 (1), [Cu(L 1)](ClO4)2 (2), [Ni2(L 2)(NCS)6][Ni(L1)] (3) and [Mn(bzpy)(NCS) 2] (4) with neutral ligands [L1 = N-(1-pyridin- 2-yl-phenylidene)-N′-[2-({2-[(1-pyridin-2-yl phenylidene)amino]ethyl} amino)ethyl]ethane-1,2diamine, L2 = N-(1-pyridin-2-yl-phenylidene)- N′-[2-({2-[(1-pyridin-2-ylphenylidene)amino]ethyl}piperazine-1yl)ethyl] amine, bzpy = 2-benzoylpyridine] are reported. The trinuclear nickel(II) complex 3 is made of a dinuclear anion and a mononuclear cation. Variable-temperature magnetic susceptibility and variable-field magnetisation studies performed on 3 suggest weak antiferromagnetic coupling (J = -0.7 cm-1) between the twometals of the dinuclear entity, but no magnetic interaction between the anionic and cationic counterparts. © 2011 Elsevier Ltd.
    Original languageEnglish
    Pages (from-to)2032-2037
    Number of pages5
    JournalPolyhedron
    Volume30
    Issue number12
    DOIs
    Publication statusPublished - 2 Aug 2011

    Keywords

    • Magnetism
    • Schiff bases
    • Transition metal ions
    • X-ray structure

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