To Compare Formation And Stability Of complexes Of Some Transition Metal Ions With Amino Acids With Stability Constant.
Journal Title: IOSR Journal of Applied Chemistry (IOSR-JAC) - Year 2018, Vol 11, Issue 3
Abstract
Chemistry ofProteins which are the most complex substances known to man is one of the great challenges in modern science. In the present work peptides of amino acid were used to study metal-ligand stability constants. Various chelates of metal ions like Al(III), Cr(III), Fe(III), Pt(IV) etc. with various chalcones and amino acids were studied for their stability determination. In the present work complexes of transition metal ions like Cu(II) and Ni(II)with peptide; DL- Alanyl-DLAlanine were prepared and progress of their formation and metal-ligand stability constants at 0.1M ionic strength were studied potentiometrically. It was found that for Cu(II) the colourlesssolution changed to blue at about pH 5.0 and for Ni(II) at pH 5.25 the colourless solution changed to orange. The stability was studied from Ƞ (ligand number) values and logK values. It is concluded from results that complex of Cu(II) with DLAlanyl-DL- Alanine is more stable than that for Ni(II).
Authors and Affiliations
Rajesh R. Wankhade
Keywords
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