Synthesis and Characterization of Two Azo Complexes

Abstract

Azo dyes are organic compounds. In this study two complexes were prepared.  The infrared spectrum of the compound under study showed a set of distinct bands that confirm its chemical structure. An absorption band was recorded at 3085 cm⁻¹, attributed to aromatic C–H bond stretching vibrations, proving the presence of aromatic rings in the structure. A clear band also appeared at 1542 cm⁻¹, attributed to aromatic C=C stretching vibrations. A clear band appeared at 1542 cm⁻¹ attributed to aromatic C=C stretching vibrations, strengthening the evidence for the aromatic character of the compound. Also, a band was observed at 1434 cm⁻¹ attributed to the N=N bond stretching vibration, a confirmatory sign of the presence of the azo group characteristic of azo dyes. In addition, the spectrum showed a band at 1380 cm⁻¹ attributed to the N–C bond stretching vibration, indicating the attachment of nitrogen to the aromatic rings. These results are consistent with the spectroscopic references for azo dyes, which typically show bands in approximately the same frequency ranges, supporting the hypothesized structure of the compound and confirming it as a suitable azo aromatic compound for dye applications.