高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (7): 1003.

• 论文 • 上一篇    下一篇

稀土Pr(Ⅲ)、Nd(Ⅲ)与2-[(取代苯胺基)羰基]苯甲酸的配合物研究

石进超, 阿米娜, 李恒欣, 杨秉勤   

  1. 西北大学化学系, 西安, 710069
  • 收稿日期:1994-09-12 修回日期:1994-12-28 出版日期:1995-07-24 发布日期:1995-07-24
  • 通讯作者: 石进超,男,52岁,副教授.
  • 作者简介:石进超,男,52岁,副教授.

Studies on the Complexes of Pr(Ⅲ), Nd(Ⅲ) with 2-[(Substituted phenylamino) carbonyl]benzoic Acids

SHI Jin-Chao, A Mi-Na, LI Heng-Xin, YANG Bing-Qin   

  1. Department of Chemistry, Northwest University, Xi'an, 710069
  • Received:1994-09-12 Revised:1994-12-28 Online:1995-07-24 Published:1995-07-24

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被引次数

10

摘要： 报道了配合物Ln(X-P)3·3H2O[其中X=H,2-Cl,4-Br,3-OH,3-NO2,2-OCH3,2-CH3,2,4-二氯,P=2-(COO)C6H4CONHC6H5-nXn,n=1,2;Ln=Pr(Ⅲ),Nd(Ⅲ)]的制备,并用元素分析、红外光谱、电子反射光谱、热重分析进行了表征。结果表明,配位是通过羧酸羟基氧原子和酰胺羰基氧原子进行的,含3分子配位水。通过电子反射光谱数据,对Slater-Condon参量(Fk)、Lande参量(ξ4f)、Nephelauxit比率(β),平均共价参数(δ)、平均成键参数(b1/2)、F4/F2、F6/F2比值进行了计算,对配合物的共价成键情况进行了讨论。

关键词: 稀土配合物, 红外光谱, 电子反射光谱, 热重分析

Abstract: Complexes with the general formula Ln(X-P)3·3H2O[X=H, 2-Cl, 4-Br, 2CH3, 3-NO2, 2-OCH3, 2,4-dichloro, 3-OH; P=2-(COO)C6H4CONHC6H5-nXn, n=1,2; Ln=Pr (Ⅲ), Nd(Ⅱ)] have been synthesized and characterized on the basis of elementry analysis, infrared and reflectance electronic spectra and thermogravimetical methods. The results show that the cpordination occurs by means of two oxygen atoms, one is from the amido and the other from the hydroxyl in the carboxylate. Each complex contains three coordination water molecules. The values of Slater-Condon (F2, F4, F6) interelectronic repulsion and Lande parameter (ξ4f) spin-orbit interaction parameters have been computed from the spectral data. The average values of F4/F2and F6/F2have been found to be 0. 137, 0. 0149[Pr (Ⅲ)] and 0.153, 0.0152 [Nd(Ⅲ)], respectively. By using the spectral data, the nephelauxitic ratio (β), average covalency parameters (δ) and average bonding parameters (b1/2) have been evaluated which indicate weak covalent bonding.

Key words: Rare earth complexes, Infrared spectrometry, Reflectance electronic spectra, Thermogravimetric analysis

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