X. Shen et al., SYNTHESIS AND SPECTRAL INVESTIGATION OF RARE EARTH(III) COMPLEXES OF AMIDO ACID LIGAND DERIVED FROM 2,4-DINITROPHENYLHYDRAZINE, Synthesis and reactivity in inorganic and metal-organic chemistry, 25(4), 1995, pp. 499-509
Fourteen rare earth (III) complexes REL(3) . nH(2)O (where RE = Sc, n
= 5; RE = Y, La, Ce, Sm; Eu, Gd, Tb, Dy, Ho, Er, Yb, n = 6; RE = Pr, N
d, n = 4; HL = phenyl)amino-acetyl-2',4'-dinitrophenylhydrazine), have
been synthesized and characterized by elemental analyses, conductance
measurements, magnetic moments, IR,H-1 NMR, electronic spectra, TG an
d DTA. Their nephelauxetic ratio (beta), bonding parameter (b(1/2), Si
nha's parameter (delta%) and covalency angular overlap parameter (eta)
have been determined for the Pr3+, Nd3+ and Er3+ complexes.