Synthesis and structural studies of new Mannich base ligands and their metal complexes |
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| Authors: | Mohamad Jaber Al-Jeboori Ahlam Jamil Abdul-Ghani Ahmed Jasim Al-Karawi |
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| Institution: | (1) Department of Chemistry, College of Education Ibn Al-Haitham, University of Baghdad, P.O. Box 4150, Baghdad, Iraq;(2) Department of Chemistry, College of Science, University of Baghdad, Jaderiya, Baghdad, Iraq;(3) Department of Chemistry, College of Sciences, Al-Mustansiriya University, P.O. Box 46010, Baghdad, Iraq |
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| Abstract: | The new Mannich bases bis(1,4-diphenylthiosemicarbazide methyl) phosphinic acid H3L1 and bis(1,4-diphenylsemicarbazide methyl) phosphinic acid H3L2 were synthesised from the condensation of phosphinic acid, formaldehyde with 1,4-diphenyl thiosemicarbazide and 1,4-diphenylsemicarbazide,
respectively. Monomeric complexes of these ligands, of general formulae K2CrIII(L
n
)Cl2], K3MnII(L
n
)Cl2] and KM(L
n
)] (M = Co(II), Ni(II), Cu(II), Zn(II) or Hg(II); n = 1, 2), are reported. The mode of bonding and overall geometry of the complexes were determined through physico-chemical
and spectroscopic methods. These studies revealed octahedral geometries for the Cr(III), Mn(II) complexes, square planar for
Co(II), Ni(II) and Cu(II) complexes and tetrahedral for the Zn(II) and Hg(II) complexes. |
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