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KMID : 1059520080520050468
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Journal of the Korean Chemical Society
2008 Volume.52 No. 5 p.468 ~ p.475
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Synthesis and Characterization of Homobinuclear Complexes of UO2(VI), Th(IV), ZrO(IV) and VO(IV) with Schiff-Base Monohydrazone Derivatives
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Dash D. C.
Mohapatra R. K.
Ghosh S.
Naik P.
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Abstract
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A series of homobinuclear complexes of the type [M2(L)(NO3)n(H2O)2], [where M=UO22+, Th4+, ZrO2+, n=2 for UO22+, ZrO2+, n=6 for Th4+] and [(VO)2(L)(SO4)(H2O)], L=1,15-di(o-hydroxyphenyl)-2,3,6,7,9,10,13,14-octaaza-4,5,11,12-tetraphenyl/tetramethyl-pentadeca-1,3,5,10,12,14-hexa-ene-8-thione (optH2/omtH2) have been synthesized in template method from thiocarbohydrazide, benzilmonohydrazone/diacetylmonohydrazone, salicylaldehyde and characterized on the basis of elemental analysis, thermal analysis, molar conductivity, magnetic moment, UV, IR and 1H NMR studies. The results indicate that UO22+ and ZrO2+ ions are hexa-coordinated; Th4+ ion is octa-coordinated yielding diamagnetic complexes whereas the VO2+ ion is penta-coordinated yielding paramagnetic complexes of above composition.
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KEYWORD
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Schiff Base, Template Synthesis, Structure and Thermal Properties, IR and H1-NMR Spectra
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