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Complexes of a newly synthesized tetraoxime with silver(I) in acetonitrile: Study with different analytical techniques

Abdollah Yari, Saba Rashnoo

We are reporting the study of the complexation of a newly synthesized tetera-oxime derivative (2,5,10,13-Tetraazatricyclo[12,2,2,2]icosa- 1(16),6,8,14,17,19-hexene-3,4,11,12,13-tetraone tetraoxime)withAg(I) in acetonitrile. Analytical techniques (IR and UV-Vis), conductometry and potentiometry showed that the ligand reacts selectively towards Ag(I) ion. In addition, the stoichiometry of resulted complexes was investigated by studying their GC-Mass spectra. The results revealed that the mole ratios of the reactants in the complexes were 2:1 and 1:1 (metal:ligand). The stepwise formation constants (K1 and K2) were evaluated (3.2×108 and 4.3×107, respectively) by using a computerized non-linear curve-fitting program.