and related ligands in homogeneous catalysis. In particular, it describes the various ways by
which this ligand can stabilised the metal within a complex for homogeneous catalysis. We
surveyed the important transition metal homogenous catalysts containing pyridine and
related ligand acting as backbone for other ligands in homogeneous catalytic reactions
explicitly from 2011 up to early 2014 and summarized their comparative catalytic activities.