• Chandra Prakash Sinha

All over the world wide intersection which provide to comparative studies on macrocyclic metal Co(II) and Ni(II) complexes with macrocyclic ligand. Consequently due to under the present communication in coordination of our earlier interest. Very recently there has been a phenomenal growth in studies of Co(II) and Ni(II) complexes. The Schiff base ligand, 1,2-diimino bis(p-methoxy o-hydroxy acetophenonyl) ethane—1,2-dione has been prepared by the condensation of p-methoxy o-hydroxy acetophenone and ethane-1,2-diamine at room temperature. The complexes [M(L)(B)2] of a new macrocyclic ligand derived from metal ion catalysed template synthesis of 1,2-diimino bis(p-methoxy o-hydroxy acetophenonyl) ethane—1,2-dione with Co(II) and Ni(II) have been synthesized. Analyses with characterizations have been done on the basis of their elemental analyses, conductivity, magnetic moment, electronic transition and IR spectra. On the basis of electronic spectra and magnetic moment data suggest that the metal complexes have high spin octahedral paramagnetic more stable macrocyclic ring structure. Spectroscopic studies indicate that the coordination occurs with metal ions through two equatorial oxime-amine chelating ligand by neutral poly dentate donor azomethine nitrogen with two oxygen atom of phenolic group while other position of metal ions satisfied by two facial and axial mode of water, ammonia, quinoline ..... etc with Co(II) and Ni(II). The Co(II) and Ni(II) complexes and ligands have been screened for antibacterial, antimicrobial activity and in the applied medicinal chemistry with other area of industries.

Phenolic group, Conductivity, Medicinal Chemistry, Macrocyclic ligand, Facial and axial mode.

"Studies of Co(II) and Ni(II) Complexes with Poly dentate Schiff base ligand.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 10, page no.741-749, October-2018, Available :http://www.jetir.org/papers/JETIR1810A16.pdf

"Studies of Co(II) and Ni(II) Complexes with Poly dentate Schiff base ligand.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 10, page no. pp741-749, October-2018, Available at : http://www.jetir.org/papers/JETIR1810A16.pdf