Synthesis and study of Hg (II) complex with ligand derived from 4,5-diphenyl imidazole

Muntadher M. AL-Kishwan; Muneer A. AL -Da,amy; Salih H. Kadhim

doi:10.53730/ijhs.v6nS5.9777

Authors

Muntadher M. AL-Kishwan
muntadher.mohammed@s.uokerbala.edu.iq
University of Karbala-College of Education for Pure Science-Chemistry Dept.
Muneer A. AL -Da,amy University of Karbala-College of Education for Pure Science-Chemistry Dept.
Salih H. Kadhim University of Babylon-College of Science-Chemistry Dept.

Keywords:

azo-Schiff, Mercury (II), Spectrophotometric, Imidazole

Abstract

A simple, rapid, sensitive and accurate spectrophotometric-method has been developed for the determination of Mercury (II).using the azo-Schiff reagent 1-(4-(((4,5-dimethyl-1H-imidazol-2-yl)diazenyl)methyl)phenyl)-N-(4-nitrobenzyl)ethan-1-imine(DMIPNI) react with Mercury (II) solution in the pH= 7 and to form Red complex. The complex shows λ_max at 517 nm with a malar absorptivity 2.44 × 10⁵ L.mo1^-1.cm^-1 and Sandell’s sensitivity 8.2184×10^-4 μg.cm^-2 .Beer’s law is obeyed in the concentration range (0.1 – 2 μg.mL^-1) of Hg (II) with an extremely high degree of linearity as indicated by the correlation coefficient value of 0.9994 with detection limit of 0.0119 μg.ml^-1 and The limit of quantification is 0.0398 μg.ml^-1. The nature of complex showed that (M:L) ratio was 1:2 The stability constant of the complex was 2.7368 × 10⁹ mol.L^-1 , This spectrophotometric method is considered to be highly sensitive using a detector (DMIPNI).

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