• K Nag

      Articles written in Journal of Chemical Sciences

    • Structure-function relationship in some macrocyclic dicopper complexes

      K Nag

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      A number of macrocyclic dicopper(II) complexes containing aza-, amino or amido nitrogen and phenolic oxygen donors are described, X-ray crystal structures of several of these compounds are discussed. An account of their electrochemical behaviour and magnetic properties is given. Factors that affect electron transfer behaviour with regard to stabilization of the lso- and mixed-valence species, intramolecular electron transfer, and spin-exchange interactions have been examined in terms of the structural features.

    • Design and properties of phenoxo-bridged binuclear, trinuclear and tetranuclear macrocyclic complexes

      K K Nanda R Das K Venkatsubramanian K Nag

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      Multinuclear complexes derived from binucleating and tetranucleating macro-cyclic ligands of the types tetraaminodiphenol and octaaminotetraphenol are reported. The effect of electronic interactions between metal centres held in close proximity by the macro-cyclic ligands on chemical reactivities, redox and magnetic properties of the complexes is discussed. Systematic changes in the structure and stereochemistry of the metal complexes brought about by variation of the auxiliary axial ligands are examined. A magneto-structural relation for the binuclear nickel (II) complexes implicating linear dependence of spin-exchange integral (J) on Ni-O(phenoxide)-Ni bridge angle or Ni...Ni separation is discussed.

    • Foreword

      D Datta K Nag

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