Synthesis, Characterization, And Antibacterial Activities Of Manganese (II), Cobalt(II), Iron (II), Nickel (II) , zinc (II) And Cadmium(II) Mixed- Ligand Complexes Containing Amino Acid(L-Valine) And Saccharin

Abstract

A new six mixed ligand complexes of some transition metal ions Manganese (II), Cobalt(II), Iron (II), Nickel (II) , and non transition metal ion zinc (II) And Cadmium(II) with L-valine (Val H ) as a primary ligand and Saccharin (HSac)  as a secondary ligands  have been prepared. All the prepared complexes have been characterized by molar conductance, magnetic susceptibility infrared, electronic spectral, Elemental microanalysis (C.H.N) and AA . The complexes with the formulas   [M(Val)₂(HSac)₂]

M= Mn (II) , Fe (II) , Co(II) ,Ni(II), Cu (II),Zn(II) and  Cd(II)

L- Val H= (C₅H₁₁NO₂)  , C₇H₅NO₃S

The study shows that these complexes have octahedral geometry; The metal complexes have been screened for their in microbiological activities against bacteria.  Based on the reported results, it may be concluded that the deprotonated ligand  (L-valine) to (valinate ion (Val^-)  by using (Na OH) coordinated to metal ions as bidentate ligand through the oxygen atom of the carboxylate group(-COO^-), and the nitrogen atom of the amine group (NH₂), where the saccharin (H Sac) coordinated as a monodentate through the nitrogen atom.

Keywords: L-Valine , mixed ligand complexes, Saccharin  , spectral studies , Antibacterial activities.