• Dr. Santosh Kumar Singh

All over the world wide intersection which provide to comparative studies on macrocyclic metal Cr(III) and Fe(II) complexes with macrocyclic ligands. Consequently under the current communication, in coordination of our earlier interest. Very recently there has been a phenomenal growth in studies of Cr(III) and Fe(II) complexes. The complexes of the chelating ligands were synthesized using metal halides. The complexes of a new hydrogen bonded macrocyclic ligand derived from metal ion catalysed template synthesis of 1,2-Diamino-4,5-dinitrobenzene and diacetylmonoxime with Cr(III) and Fe(II) have been synthesized. Analyses with characterizations have been done on the basis of their elemental analyses, conductivity, magnetic moment in addition to spectral data and UV- visible. On the basis of electronic spectra and magnetic moment data suggest that the metal complexes have high spin octahedral paramagnetic extra hydrogen bonded more stable macrocyclic ring structure. Spectroscopic studies indicate that the coordination occurs with metal ions through two equatorial oxime-amine chelating ligands by neutral poly dentate donor azomethine nitrogen while other position of metal ions satisfied by two halides ions in facial and axial mode with Cr(III) and Fe (II) and formed three, five member and one six member extra hydrogen bonded more stable cyclic ring structure of complexes. The Cr(III) and Fe (II) complexes and ligands have been screened for antibacterial, antimicrobial activity and in the applied medicinal chemistry with other area of industries.

Stable ring structure, Conductivity, Medicinal Chemistry, Azomethine, Facial and axial mode.

" Studies on antibacterial and antimicrobial Activity of Macrocyclic Cr(III) and Fe(II) Complexes with Schiff base ligands.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 11, page no.728-735, November-2018, Available :http://www.jetir.org/papers/JETIR1811C12.pdf

" Studies on antibacterial and antimicrobial Activity of Macrocyclic Cr(III) and Fe(II) Complexes with Schiff base ligands.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 11, page no. pp728-735, November-2018, Available at : http://www.jetir.org/papers/JETIR1811C12.pdf