Addition of phenyl group in semicarbazide and methyl group adjacent to doner nitrogen in pyridyl ring in ligand pyridine-2-carbonaldehyde-semicarbazone to form MPPSc proved useful with bathochromatic shift of wave-length of maximum absorbance of copper, nickel and cobalt within 373- 398 nm with enhancement in colour reaction toward metal ion as compared 2-pyridinecarboxal-dehyde-semicarbazone [7].