Investigation of Complexation Behavior of Ninhydrin and Amino Acids Towards Cobalt(II) Ions using Fluorescence Spectroscopy
No Thumbnail Available
Date
2007-08
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
The amino acids (glycine and alanine) and ninhydrin derivatives of shiff base
(ketimine) and Ruhemann’s purple complexes of Co(II) were prepared and studied
using fluorescence and UV/VIS absorption spectroscopy. The Ruhemann’s purple
complex were found to have two emission bands at 420nm (23810cm−1) and 490nm
(20410cm−1). The existence of iso-emission point in the emission spectra of Ruhemann’s
purple complex shows the existence of two structures of the complex at equilibrium.
The fluorescence spectra of glycine ninhydrin shiff base in DMF solution
were found to have also an iso-emission point showing possible two structures. The
emission band lies in ultra violate region and 350nm (28570cm−1) band can be seen
resolved. From the spectra of both complexes the octahedral symmetry group were
suggested for the two complexes
Description
Keywords
Investigation of Complexation Behavior