Coordination Compounds of Heterocyclic and Derivatives I‐ Synthesis AZO Characterization of Bivalent Metal Chelates with Some Imidazole AZO Dyes

Abstract

and Hg(I1) ions. I t i s concluded t h a t t h e ligands a r e bonded t o t h e metal ion through t h e a-nitrogen atom of t h e a r y l azo group and N-3 of t h e imidazole ring. The apparent formation cons t a n t s of t h e complexes i n solution have been determined.

Preparation, Characterization and Biological Evaluation of some Lanthanide (???) ions Complexes with 3-(1-methyl-2-benzimidazolylazo)-Tyrosine

“…Benzimidazolylazo is a hetrocyclic compounds containing the active azoimine moiety (-N=C-N=N-), this type of organic ligands that contain nitrogen atoms coupled in conjugated system of π-bonds, which have been reacted with metal ions as multidentate ligands [10]. This class of ligands have been used in several applications such as complexion agent, chromogenic reagents, dyes, pharmace and non-linear optics [11][12][13]. The azo components of 2-aminobenzimidazole derivatives tend to show red shift and high tinctorial strength when compared to analogous dyes derived from other type of aromatic system [14].…”

Preparation, Characterization and Biological Evaluation of some Lanthanide (ΙΙΙ) ions Complexes with 3-(1-methyl-2-benzimidazolylazo)-Tyrosine

“…Benzimidazolylazo is a hetrocyclic compounds containing the active azoimine moiety (-N=C-N=N-), this type of organic ligands that contain nitrogen atoms coupled in conjugated system of π-bonds, which have been reacted with metal ions as multidentate ligands [10]. This class of ligands have been used in several applications such as complexion agent, chromogenic reagents, dyes, pharmace and non-linear optics [11][12][13]. The azo components of 2-aminobenzimidazole derivatives tend to show red shift and high tinctorial strength when compared to analogous dyes derived from other type of aromatic system [14].…”