Synthesis and1H NMR Study of Rare Earth Complexes with Acyclic Glycols of Different Terminal Groups

Abstract

Abstract: Seventeen new complexes of rare earth perchlorates with diethylene glycol dimethyl ether (EO₂Me₂) and diethylene glycol bis(o-methoxy phenyl) ether [EO₂ (MeOP)₂] were synthesized and characterized by elemental analysis, molar conductivity, XRD, IR, thermal analysis and ¹H NMR.The compositions can be formulated as Ln₃(ClO₄)₉·(EO₂Me₂)₅·18H₂O(Ln = La, Pr, Nd),Ln(ClO₄)₃ .EO₂Me₂·8H₂O (Ln=Sm-Er, Yb.Y) and Ln(ClO₄)₃EO₂ (MeOP)₂·6H₂O (Ln = La,Pr, Nd,Eu,Gd).Their properties, especially NMRand IRspectra, were investigated.The effect of terminal group of acyclic glycol on the compositions and properties of the complexes studied was discussed in detail.Some significant results were obtained.

Key words: Rare earth perchlorates, Acyclic glycol, Complex, Terminal group effect

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CAI Le-zhen, YAO Ke-min, LI Jia-ling, BAO Zheng-cao, SHEN Lian-fang, TIAN Qing-ping. Synthesis and₁H NMR Study of Rare Earth Complexes with Acyclic Glycols of Different Terminal Groups[J]. Chem. J. Chinese Universities, 1992, 13(1): 1.

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Synthesis and₁H NMR Study of Rare Earth Complexes with Acyclic Glycols of Different Terminal Groups

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