Technetium and rhenium complexes of mercaptoacetyl glycine ligands 2. Formation and molecular structure of Re(V) complexes with mercaptoacetyl glycine and mercaptoacetyl glycine ethylester
摘要:
Reaction of [ReOCl4](-) with mercaptoacetyl glycine (MAG(1)) in a 1:1 ratio gives [ReO(MAG(1))Cl](-). Using an excess of the ligand in ethanol, a neutral oxorhenium(V) complex [ReO(MAGEt(1))(2)] is formed where the metal is coordinated by S and N of one ligand, and by S and O (amide group) of the other ligand molecule. The carboxylic groups of both mercaptoacetyl glycine ligands have been esterified with the solvent ethanol. Both complexes were characterized by X-ray crystallography.