Synthesis structural studies of thorium(IV) and dioxouranium(VI) nitrate complexes with some schiff bases derived from pyridine-2-carboxaldehyde and certain amino compounds

Synthesis, Characterization and Antibacterial Activity of 2-Acetyl pyridine -2-furoylhydrazone Complexes with UO2(II), Th(IV), Co(II), Ni(II), Cu(II) and Zn(II)

“…The nitrate complexes (7-10) exhibit a very strong band at the region 1383-1385 cm -1 and medium bands at the region 810-837 cm -1 which are attributed to the Ʋ 3 and Ʋ 2 vibrations, respectively of uncoordinated nitrate ion of D 3 h symmetry (Kamar and Radhakrishnan, 2011). In the spectrum of the Th(IV) nitrate complex(11), non-ligand bands are observed at 1514, 1279, 1025 cm -1 , which assigned Ʋ 4 , Ʋ 1 and Ʋ 2 vibration modes, respectively of a coordinated nitrate ion, since the magnitude of splitting(Ʋ1-Ʋ4)is 235 cm -1 , the nitrate coordinated nitrate ions are in a bidentale fashion (Kuncheria et al, 1989). It is obvious that thorium(IV) nitrate complex (11) containing both ionic and coordinated nitrate ions consistent with conductivity data which suggest 1:2 electrolyte for this complex.…”