Titanyl(IV), zixconyl(!V), hafnyl(IV) and uranyl(Vl) oomplexes
of beniz\u27Dyl hydrazones derti.ved frnm benzoyl hymazdne
and sal1cyla1dehyde (BSH), o-hydro!XY acetopheilOllle (BAH),
o-hydroxy propi0tphenone (BPH) and 2-hydroxy-1-naphthaldehyde
(BNH) are desc·ribed. These complexes were characterised
on the basis oof elemental analyses, electrical conductance and
spectral (IR, UV and visible) data. The tiltany1\u27(!V) complexes
having ·the formula [TiL(OH) (H20) lzO appear ·to have a seven-
coordinat·e geometry, the zirconyl and hafnyl complexes,
[ML(OHh(H20) )4 (M = Zr or HO appear to possess tetrameric
structure in which each metal atom is e.ight-coordina:ted as in
the origin,aJl salt, MOCh.8H20 (M = Zr or Hf) ; whereas uranyl
comple·xes [UO:J.;(H20hh are dimeric having phenoxide brlidges,
•tiu/°\u27u•ti
as revealed by the \u27-o,, r:in:g v~br.ations in the IR
spectra at ca. 845 cm-1, wi.th each metal atom having an eightcoordinated
structure. In all these complexes the benzoyl hydrazones
act as di!ba:sic te1r.dentate (N, o-. o-> chelating agentJs
