synthesis and identification of chromium (iii) complex with 2-amino-3-(1-hydrogen-indol-3-yl) propanoic acid ligand

In this study, the ligand 2-amino-3-(1-hydrogen-indol-3-yl) propanoic acid (trp) was used to react with chromium metal ion to prepare complex [cr (trp)2(oh)(h2o)].this compound was synthesized for the first time and identified by elemental analysis, ft-ir, uv-vis, conductivity, and melting point techniques. in the ft-ir spectrum of the complex [cr (trp)2(oh)(h2o)], the vibrational bands of the acetate and nh2 groups have shifted to lower energies than the free ligand. in addition, the presence of the cr-n vibration band at 424 cm-1 is due to the coordination of the ligand to chromium metal. the hexa-coordinated complex of cr with the octahedral geometric structure including [cr (trp)2(oh)(h2o)] is proposed.