This book contains an overview of Macrocyclic Metal Complexes. Macrocyclic complexes of metal has fascinated and raise the attention of researchers due to their ample applications in bioinorganic chemistry for biochemical, industrial and agricultural purpose. Macrocyclic ligand metal complexes are best prepared with the aid of metal ions as 'templates' to direct the steric course of the condensation reaction which ultimately end with ring closure. The text will discuss the versatile application, synthesis ,characterization and biological properties of Macrocyclic complexes. Providing a wide reaching review of this important area, this book will be of interest to undergraduate, post graduate and researchers.