19992-28-0Relevant academic research and scientific papers
Dioxouranium complexes with pentadentate s-triazine Schiff base ligands: Synthesis, crystal structure and optical properties
Pavelek, Lubomír,Ladányi, Vít,Ne?as, Marek,Vallová, Silvie,Wichterle, Kamil
, p. 89 - 96 (2016/12/03)
Using the reactions of 2,4-dihydrazino-(R)-s-triazine (R – methoxy (DHMT)) with salicylaldehyde and o-vanillin ligands 2,4-Bis(2-hydroxybenzylidenehydrazino)-6-methoxy-s-triazin (L1) and 2,4-Bis(2-hydroxy-3-methoxybenzylidenehydrazino)-6-methoxy-s-triazin (L2) were obtained. Using the reaction of 2,4-dihydrazino-(R)-s-triazine (R – amino (DHAT)) with o-vanillin ligand 2,4-Bis(2-hydroxy-3-methoxybenzylidenehydrazino)-6-amino-s-triazine (L3) was obtained. By the reactions of the prepared ligands, derivatives of hydrazo-s-triazine, with uranyl acetate or nitrate, three new complexes were prepared. X-ray diffraction shows that the UO22+ion is in a pentagonal bipyramidal coordination environment. Two oxygen atoms of the UO22+ion occupy the axial positions and three atoms of nitrogen and two atoms of oxygen construct the equatorial plane. The uranyl(VI) complexes were characterized by single-crystal X-ray diffraction, UV–vis, fluorescence and IR spectroscopy. Thermal stabilities of the complexes were investigated using thermogravimetric analysis.
SYNTHESIS OF SOME ESTERS AND AMIDES OF 2-SUBSTITUTED 4,6-BIS(p-CARBOXYPHENOXY)-sym-TRIAZINE
Pyzhov, V. K.,Zaplishnyi, V. N.,Balyan, A. A.,Grigoryan, R. T.,Pogosyan, G. M.
, p. 1057 - 1062 (2007/10/02)
A number of corresponding esters and amides were obtained by the reaction of the chlorides of 2-substituted 4,6-bis(p-carboxyphenoxy)-sym-triazines (CPT) with ethanol and some primary amines in the presence of a hydrogen chloride acceptor.It was observed that hydrazine and hydrazine hydrate have a cleavage effect on the C-O bond of chloride of CPT in the 4 and 6 positions even at 0 deg C.Dihydrazides of CPT were synthesized at -40 deg C.
