Synthesis, Characterization and Properties of Lanthanide Nitrate Complexes with Isonicotinoyl Hydrazone
来源期刊：JOURNAL OF RARE EARTHS2001年第1期
论文作者：高育新 卜显和 刘河 张若桦 陈巍
Abstract: Some light-lanthanide nitrate complexes were obtained by the reaction of lanthanide nitrate with isonicotinoyl hydrazone (HL＝N,N′-diisonicotinoyl-2-hydroxy-5-methyl-isophthalaldehyde dihydrazone) in methanol. The general formula of the complexes is Ln(L)(NO3)2*nH2O(Ln＝La, Ce, Pr, Nd and Sm; n＝0, 1). The complexes were characterized by elemental analyses, conductance, thermal analyses, UV and IR spectra. The results show that the lanthanide ion in each complex is coordinated by oxygen and nitrogen atoms of the ligand (L) and the oxygen atoms of the nitrate. The amide-oxygen atoms of L coordinate to the Ln ions in its keto-form. The magnetic susceptibility of the neodymium complex shows that the magnetic data obey Curie-Weiss law in the range of 75K＜T＜300K.
高育新1，卜显和2，刘河1，张若桦1，陈巍1
(1.Department of Chemistry, Nankai University,;
2.Department of Chemistry, Nankai University,The State Key Laboratory on Rare Earth Materials Chemistry and Applications, Peking University,)
Abstract:Some light-lanthanide nitrate complexes were obtained by the reaction of lanthanide nitrate with isonicotinoyl hydrazone (HL＝N,N′-diisonicotinoyl-2-hydroxy-5-methyl-isophthalaldehyde dihydrazone) in methanol. The general formula of the complexes is Ln(L)(NO3)2*nH2O(Ln＝La, Ce, Pr, Nd and Sm; n＝0, 1). The complexes were characterized by elemental analyses, conductance, thermal analyses, UV and IR spectra. The results show that the lanthanide ion in each complex is coordinated by oxygen and nitrogen atoms of the ligand (L) and the oxygen atoms of the nitrate. The amide-oxygen atoms of L coordinate to the Ln ions in its keto-form. The magnetic susceptibility of the neodymium complex shows that the magnetic data obey Curie-Weiss law in the range of 75K＜T＜300K.
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