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Preparation and Characterization of Nickel complex with new azo ligand 1- (6-bromo-benzothiazolyl )-azo]-2-hydroxy-3-naphthoic acid (6-BrBTANA) | ||
| Iraqi National Journal Of Chemistry | ||
| Article 1, Volume 0, Issue 50, 2014, Pages 167-176 | ||
| Authors | ||
| Kassim Hassan Kadhim; Hussein Abd Mohammed; Nada Hassan Hussein | ||
| Abstract | ||
| Abstract A new heterocyclic azo dye 1-[(6-bromo-benzothiazolyl )-azo]-2-hydroxy-3-naphthoic acid (6-BrBTANA) was synthesized by coupling diazotized of(2-amino-6-bromo benzothiazol) (2-ABrBT) with 2-hydroxy-3-naphthoic acid in alkaline alcoholic solution.The organic compound was characterized by elemental analysis and spectrophotometric method such as Infra- red and electronic spectra . A sensitive and selective spectrophotometric method is proposed for the rapid determination of Nickel(II) using (6-BrBTANA), as anew spectrophotometric reagent. The reaction between this reagent and Nickle(II) is instantaneous at max 614 nm and pH=6 to form a violet complex having a molar ratio of 1:2 (Ni – 6-BrBTANA) .The molar absorptivity of the complex is (1.112*104 L.mol-1.cm-1) and the stability constant was found to be 3.33*109 L2.mole-2. The physical and spectral studies of the solid complex indicated octahedral coordination via N and O atoms of azo and hydroxyl group respectievely and N in thiazolyl ring. | ||
| Keywords | ||
| Spectrometry; azo dyes; Thiazolyl azo; nickel | ||
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