A novel bi-heterocyclic azo derivative is synthesized by the diazo-coupling reaction of 2-amino-3-carbethoxy-4,5-dimethylthiophene and 2-amino-4-phenylthiazole and its ligational behaviour towards Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) salts is investigated. The complexes are characterized on the basis of elemental analyses, molar conductance, magnetic susceptibility measurements, UV-Visible, IR and ¹H NMR spectral data. Spectral data have indicated that the ligand is coordinated to the metal ion in a neutral bidentate manner. On the basis of electronic spectral data and magnetic susceptibility measurements, suitable geometry is proposed for each complex. Thermogravimetric studies of copper(II) complex are used to characterize the complex. The dyeing performance of the azo derivative and its metal complexes is examined on silk fabric. The corrosion inhibition efficiency of the ligand and its metal complex in 0.5 M H₂SO₄ for mild steel coupons is monitored by weight-loss and open circuit potential measurements .

通过2-氨基-3-碳乙氧基-4,5-二甲基噻吩和2-氨基-4-苯基噻唑的重氮偶联反应及其对Mn（II），Co（II）的连接行为合成了一种新型的双杂环偶氮衍生物。 ），Ni（II），Cu（II）和Zn（II）盐进行了研究。根据元素分析，摩尔电导，磁化率测量，UV-可见，IR和¹对复合物进行表征1 H NMR光谱数据。光谱数据表明，配体以中性二齿方式与金属离子配位。在电子光谱数据和磁化率测量的基础上，为每种复合物提出了合适的几何形状。铜（II）配合物的热重研究用于表征配合物。在真丝织物上检查了偶氮衍生物及其金属配合物的染色性能。通过失重和开路电位测量来监测配体及其金属配合物在0.5 MH ₂ SO _4中对低碳钢试样的腐蚀抑制效率。