Synthesis And Characterization of Some New Derivatives of Amino Compounds And Their Complexes with Some Metal Ions.

Abstract

The present work deals mainly with the synthesise of four new ligands bi dentate ligands derived from 4-amino acetophenone and tryptophan. The two new ligands are synthesized by two steps: Step (1): By the reaction of one mole of ammonium thiocyanat with one mole of (chloroacetylchloride), (P-nitrobenzoyl chloride) under reflux for 3hrs in acetone; it gives product. Step (2): By the reaction of the product with one mole of 4-amino acetophenone under reflux for 6hrs in acetone, gives the ligands L1 and L2 which are L1 (ACC) =[N-(4-acetylphenyl) carbamothioyl)-2-chloroacetamide] and L2 (ACN) =[N-((4-acetylphenyl) carbamothioyl)-4-nitrobenzamide]. Also two new ligands are synthesized by two steps: Step (1): By the reaction of one mole of ammonium thiocyanat with one mole of (4-methoxy benzoyl chloride) and (chloro acetyl chloride) under reflux for 3hrs in acetone it gives product. Step (2): By the reaction of the product with one mole of tryptophan under reflux for 6hrs in acetone, gives the ligands L3,L4 which are L3(MTP)=[3-(1H-indol-3-yl)-2-(3-(4-methoxybenzoyl)thiouereido) propanoic acid] and L4(CTP)= [2-(3-(2-chloroacetyl)thioureido)-3-(1H-indol-3-yl)propanoic acid]. Molecular formulas of prepared ligands are L1(ACC)= C11H11O2N2SCl and L2(ACN)= C16H13N3O4S and L3(MTP)= C20H19N3O4S and L4(CTP)= C14H14N3O3SCl. Some of metal complexes were synthesized with prepared and the basis of their reactions with some metal ions (V+4, M+2= Mn, Co, Ni, Cu, Zn, Cd and Hg) to give complexes with molecular formulas [M(ACC)2Cl2], [M(ACN)2Cl2], [M(MTP)2] and [M(CTP)2] when (M+2= Mn, Co, Ni, Cu, Zn, Cd and Hg). [VO(ACC)2]SO4, [VO(ACN)2]SO4, [VO(MTP)2] and [VO(CTP)2]. The ligands and their metal complexes were characterized by spectroscopic techniques such as FT-IR, 1H NMR, 13C NMR, UV-Vis spectra, molar conductivity, magnetic moment and microanalysis techniques(C.H.N.S), flame atomic absorption, melting point, the above data showed the purity of ligands and their metal complexes and were in a good agreement with the theartical values. From above characterizations and results, one can conclude that complexes with ligand(ACC) and (ACN) when (M+2 = Mn, Co, Ni, Cu, Zn, Cd and Hg) have an octahedral geometry shape and the square pyramid shape for complexes for oxo-vandium(IV); While for complexes with ligand (MTP) and (CTP) have tetrahedral shape where the copper(II) complex has taken the square planer geometry shape.