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1,7-Diarylheptanoids; Metal complexes; IR spectra, Mass spectra and Electronic spectra (1)
16 mixed ligand complexes of trivalent lanthanide ions [Pr(III), Nd(III), Sm(III), Eu(III), Gd(III), Dy(III), Er(III) and Yb(III)] with unsaturated 1,3-diketones (HL) derived from acetylacetone and aromatic aldehydes [benzaldehyde, cinnamaldehyde furfural, salicylaldehyde, 2-chlorobenzaldehyde, 2-hydroxy-1-naphthaldehyde, 4-(N,N-dimethyl)aminobenzaldehyde, vanillin and 3,4- dimethoxybenzaldehyde] have been synthesised and characterised by various analytical and spectral techniques. Gd(III) complexes of HL derived from benzaldehyde and furfural, and Yb(III) complex derived from cinnamaldehyde are in agreement with [ML3 (H2O)2 ] stoichiometry. All other complexes conform to [ML2 (NO3 )(H2O)2 ] stoichiometry with bidentate nitrate coordination. (1)
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