Preparation and characterization of some complexes of trace stress (MO,Se,V) with two amino acids Serine and aspartic acid

Abstract

This project includes Prepration and identification the complexes of amino
acid (Serine and Aspartic acid ) with some ions of trace elements which are needed
the human body such as (Mo⁺⁶ , Se⁺⁴ , Vo⁺² ) and the prepared complexes which are
solid crystals were studies and identification by the following methods .
1- Thermal stability .
2- Solubility (solubility in buffer solution ) .
3- Molar conductivity .
4- Elemental analysis .
5- Determination the percentage rat of the metal in the complexes by spectral of
atomic absorption .
6- The spectral studies (Infrared Spectra , UV-Visible )
7- Determination a quantitative of chloride .
From this identification studies can give the structure formula for the complexes
which were prepared with amino acid .
1) Complexes (Vo+2) that is a pyramid have a structure formula as
[Vo(AA)2] , when AA= Amino acid (Ser ,Asp ) .
2) Hexa coordination has octahedral which given the structure formula
[M(AA)2Cl2 ] when M= (Se⁺⁴ ) .
3) Hexa coordination complexes have octahedral which given the
structure [M(AA)3 ]Cl³ when M= Mo⁺⁶ .

The complex which prepare are soluble crystal solid material in buffer solution
(pH= 6-8 ) , that have a good thermal stability ,and Non-Electrolyte except the
complexes of Molybdenum (VI) with amino acid (Ser , Asp ) are electrolyte as a ratio
(1:3 ) ( Ligand : Ion ) .
The amino acid are behavior bidentate ligands connected with central ion by the
oxygen atom in carboxyl group and the nitrogen atom in amino group (-NH₂ ) .