Synthesis and identification of the organic reagent ereochrom black t and its complex with cobalt (lll)‎

الملخص EN

The ligand 1–(4–Hydroxy –3–Naphthalene Azo)–4–Nitro–8–Hydroxy–6–Sulfonic Naphthalene Acid Sodium Salt was synthesized (by the reaction between 3–amino–4– hydroxyl naphthalene and 3 – nitro – 7 – hydroxyl –5– sulfonic naphthalene acid sodium salt) and characterized by FTIR technique, its ionization constants (PKs) were determined.

Synthesis and spectroscopic investigations of its complex with Co (III) in aqueous solution revealed the sole formation of (1: 2) (metal: ligand) complex.

Specral and magnatic studies of the isolated complex indicates octahedral coordination via the N atoms of the azo groups and the O atoms of the hydroxyl groups.

The molar conductivity of the complex was determined in an alcoholic solutions indicates that the complex has high molar conductivity.

The magnetic properties were determined by using Gouy balance which indicates diamagnetic complex.