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Isolation of dithiocarbazate salts as oxinato-complexes of titanium(IV), zirconium(IV) and hafnium(IV)
Authors:Supriya Dey  Gurvinder S Sodhi  Narender K Kaushik
Institution:(1) Department of Chemistry, University of Delhi, 110007 Delhi, India;(2) Present address: Department of Chemistry, S.G.T.B. Khalsa College, University of Delhi, 110007 Delhi, India
Abstract:Summary Ionic chelate complexes of the type, (eegr5-R)2ML]dtz] R=cyclopentadienyl (Cp) or indenyl (C9H7); M=TiIV, ZrIV or HfIV; HL=oxine; dtz=phenyldithiocarbazate (PhNHNHCS2)] have been synthesised and characterised. Conductance measurements indicate that the complexes are 1ratio1 electrolytes. From i.r. and u.v. spectral studies we conclude that the oxinato-group is chelating. Consequently there is tetrahedral coordination around the metal ion.1H and13C N.m.r. studies are consistent with the stoichiometries. X-ray powder diffraction studies have been made for (eegr5-Cp)2ZrL]dtz]. For (eegr5-Cp)2TiL]dtz] and (eegr5-Cp)2ZrL]dtz] thermal (t.g. and d.t.a.) and mass spectral studies have been carried out.
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