Synthesis and Characterization of 2,4,6-tris(hydrazino)-s-triazine and its Metal Complexes

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) (4.12l B ) and Co(II) (4.2l B ) indicate tetrahedral and octahedral geometry, respectively. Tetrahedral geometry for Cu(I) and Zn(II) complexes was suggested.

2,5,8‐Trihydrazino‐s‐heptazine: A Precursor for Heptazine‐based Iminophosphoranes

“…and Zn(II). [14] Zn(II) complexes of C 3 N 3 (NHN=C(CH 3 ) 2 ) 3 were investigated for their nonlinear optic (NLO) properties. [15] The industrial application of 2,4,6-trihydrazino-s-triazine as a blowing agent in polymer industry for producing plastic foams is a consequence of its ability to produce gaseous products by thermal decomposition.…”

Novel porous organic triazine‐based polyimide with high nitrogen levels for highly efficient removal of Ni(II) from aqueous solution

“…THSTZ was prepared according to the procedure reported in the literature . Briefly, 0.25 g of cyanuric chloride was added to 40 mL of acetonitrile and a solution of hydrazine hydrate was prepared by dissolving 0.41 g hydrazine hydrate in 30 mL of the same solvent, separately.…”

Studies on Mechanochemistry: Solid Coordination Compounds from Primary Aromatic Amines and Cobalt(II) Chloride Hexahydrate

“…Though the magnetic moment of Co(II)-complex is higher than the theoretical spin-only values for three unpaired electrons, these values can be correlated with the octahedral geometry, wherein the moment due to orbital contribution is considerable. [45][46][47][48]…”