Synthesis and Characterization of 2,4,6-tris(hydrazino)-s-triazine and its Metal Complexes |
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Authors: | Belete Kebede Negussie Retta V J T Raju Yonas Chebude |
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Institution: | (1) Department of Chemistry, Addis Ababa University, 1176 Addis Ababa, Ethiopia |
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Abstract: | A new multidentate ligand related to s-triazine herbicides 2,4,6-tris(hydrazino)-s-triazine (THSTZ) and its metal complexes
was synthesized. The complexes were investigated by m.s., n.m.r., i.r., u.v.–vis and AA spectroscopic techniques. Furthermore,
carbon, nitrogen, hydrogen, chloride, and metal analyses, conductivity, magnetic susceptibility measurements, and thermal
analyses were carried out. The Co(II), Ni(II), Cu(I), and Zn(II) metal complexes were synthesized in methanolic media. Metal-to-ligand
ratios were found to be 1:1 for Co(II) and Zn(II), 2:1 for Cu(I) and 3:2 for Ni(II) complexes. N.m.r. spectral and thermal
analyses showed the presence of MeOH in all of the complexes. Conductivity measurements suggested that the complexes were
1:2 electrolytes. Ring nitrogens as well as the terminal nitrogens of hydrazine side chains in THSTZ were proposed as metal
binding centres. Magnetic moments of Ni(II) (4.12μB) and Co(II) (4.2μB) indicate tetrahedral and octahedral geometry, respectively. Tetrahedral geometry for Cu(I) and Zn(II) complexes was suggested.
V. J. T. Raju - Previously working as Professor of Chemistry, Osmania University, Hyderbad, India |
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