The Oxamide Macrocyclic Copper, Vanadium Oxide, Manganese Complexes Structure And Nature Of The Study

Molecular magnetism and macrocyclic complexes are active fields of research, have been of considerable interest in recent years. By using oxamido-bridged ligands that can efficiently propagate magnetic exchange, a total of 26 polynuclear macrocyclic complexes have been prepared and structurally determined by X-ray crystallographic methods. All of the complexes have been characterized by means of elemental analyses, IR, electronic spectra and some of them have been characterized by ESR and variable-temperature magnetic properties.1. By using the macrocyclic oxamido-copper complex as a precursor, a hetero-binuclear complex and five hetero-trinuclear complexes have been synthesized and structurally determined by X-ray crystallographic methods. The correlations between magnetic exchange and structure of Cu^II-Mn^II and Cu^II-Co^II have been investigated.2. A new vanadium(IV)-oxo complex ligand with oxamido bridge has been synthesized and based on the precursor ligand, six trinuclear transition metal complexes have been prepared and structurally characterized. Their spectroscopic properties and magnetic properties were also investigated.3. By using the oxamido-bridged vanadium(IV)-oxo complex as a precursor, a series of vanadium(IV)-oxo tetranuclear lanthanide complexes have been prepared and structurally characterized. All the spectroscopic properties have been investigated and some of the magnetic properties have been preliminary discussed.4. A new manganese complex ligand with oxamido bridge has been synthesized and based on the precursor ligand, a homo-trinuclear complex and a hetero-binuclear complex have been synthesized and structurally determined by X-ray crystallographic methods.