Abstract
N-benzoylglycine hydrazide (BzGH) reacts with trivalent lanthanide metal ions forming complexes of the type [Ln(BzGH)2Cl(H2O)2]Cl2·nH2O, where Ln=LaIII, PrIII, NdIII, SmIII, EuIII, GdIII, TbIII, DyIII, or YIII;n=1 or 2. The structures of the complexes have been studied by conductance, magnetic, electronic, i.r.,1H n.m.r. and13C n.m.r. spectral techniques. The nephelauxetic ratio, the bonding parameter, Sinha's parameter and the covalency angular overlap parameter have been calculated from the electronic spectra of PrIII, NdIII and SmIII complexes. Seven-coordination is proposed in the NdIII complex. The i.r. and1H n.m.r. spectral data suggest bidentate BzGH in all the complexes.
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