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Title: Synthesis and characterization of dioxouranium(VI), thorium(IV), oxozirconium(IV) and oxovanadium(IV) complexes with 1,11-dihydroxy-1,4,5,7,8,11-hexaaza- 2,3,9,10-tetramethyl-1,3,8,10-decatetraene-6- thione and their derivatives with chloroacetic acid
Authors: Dash, D C
Mahapatra, A
Mohapatra, R K
Ghosh, S
Naik, P
Issue Date: Jul-2008
Publisher: CSIR
IPC CodeInt. Cl. ⁸ C07F5/00; C07F7/00; C07F9/00
Abstract: A series of complexes of the type [M(DHTMDT)(NO₃) ո].2H₂O and [VO(DHTMDT)(SO₄)].2H₂O, where DHTMDT is the Schiff’s base, 1,11-dihydroxy-1,4,5,7,8,11-hexaaza- 2,3,9,10-tetramethyl-1,3,8,10-decatetraene- 6-thione derived from thiocarbohydrazide and diacetylmonoxime, have been synthesized. Reactions of the complexes with monochloroacetic acid yield another series of complexes of the type [M(HDBIT)(NO₃)ո].2H₂O and [VO(HDBIT)(SO₄)].2H₂O, where HDBIT is another Schiff’s base, 3-(1'-hydroxy-1',4'-diaza-2',3'- dimethyl-1',3'-butene-4'-yl)-2- (1'-hydroxy-1',4'-diaza-2',3'-dimethyl-1',3'- butene-4'-yl)-imino-4-thiazolidinone obtained after cyclization with chloroacetic acid, M= UO₂(VI), ZrO(IV) and Th(IV), n=2 for UO₂(VI) and ZrO(IV), n=4 for Th(IV). All the complexes are characterized on the basis of elemental analysis, thermal analysis, molar conuctivity, magnetic moment, electronic, infrared, ¹H NMR and ESR spectral studies. The results indicate that the VO(IV) ion is penta coordinated yielding paramagnetic complexes; UO₂(VI), ZrO(IV) ions are hexa coordinated, whereas Th(IV) ion is octa coordinated yielding diamagnetic complexes of above stoichiometry.
Page(s): 1009-1013
ISSN: 0376-4710
Source:IJC-A Vol.47A(07) [July 2008]

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