Synthetic approach and structural diversities of pyridylpyrazole derived late transition metal complexes

The proximity of donor atoms in pyridylpyrazole ligand and the ability of such ligand to function in neutral as well as in deprotonated form allow it to produce a varied range of metal complexes. This review will highlight the chemistry of a large extension of pyridylpyrazole ligand derivatives as well as myriad of their complexes with core late transition metals spanning from Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd to Hg, that have received immense attention in the cutting-edge field of research. Emphasis on the synthetic strategy and diverse structural aspects of the promising metal complexes with a brief picture of their optical, magnetic, catalysis, etc. has been illustrated. Notably, this class of metal complexes with a great deal of structural diversity finds very interesting applications in the field of catalysis, supramolecular chemistry and photophysical chemistry. The influence of ligands on the physico-chemical properties of the complexes is ascribed to their varied coordination patterns to the metal centers.