摘要
报道了配合物Ｅｕ（ＸｎＰ）３·３Ｈ２Ｏ［其中Ｘ＝Ｈ，２－Ｃｌ，３－ＯＨ，４－Ｂｒ，３－ＮＯ２，２－ＯＣＨ３，２－ＣＨ３，２，４－二氯；Ｐ＝２－（ＣＯＯ）Ｃ６Ｈ４ＣＯＮＨＣ６Ｈ５－ｎ－，ｎ＝１，２］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基上氧原子和酰胺羰基氧原子进行的，含３分子水。通过电子反射光谱，对Ｎｅｐｈｅｌａｕｘｅｔｉｃ比率（Ｂ），平均共价参数（δ）和平均成键参数（ｂ１／２）进行了计算，对配合物的共价成键情况进行了讨论。
The complexes with the general formula Eu (Xn-P)3·3H2O [X=-H, 2-Cl, 4-Br, 2-CH3,3-NO2, 2-OCH3, 2, 4-dichloro, 3-OH; P=2-(COO)C6H4CONHC6H5-n; n=1,2] have been synthesized and characterized on the basis of elementary analysis, infrared and reflectance electronic spectra and thermogravimetical methods. The results show that the coordination 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. Nephelauxetic ratio (β), percentage covalency parameter (δ) and bonding parameter (b1/2) of these chelates have been calculated from the reflectance electronic spectra indicating some covalent character in the metal-ligand bond. The relative variation of covalent bonding in the complexes has been discussed.
出处
《中国稀土学报》
CAS
CSCD
北大核心
1996年第2期116-119,共4页
Journal of the Chinese Society of Rare Earths
关键词
配合物
红外光谱
热重分析
稀土元素
铕
苯甲酸
Rare earth complexes, IR spectrometry, Reflectance electronic spectra, Thermogravimetric analysis
