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In this paper, by using point mass model, the normal coordinate lanalysis calculations of La(15-C-5) (NO_3~-)_3 and La (18-C-6) (NO_3~-)_3 are performed to give theoretical results in agreement with frequencies and intensities of infrared and Raman bands. In the calculations, the same force constants with respect to the two molecules are adopted and some internal coordinates which are less important are neglected. Furthermore, the properties of coordination bonds, approximation calculation method and other related problems are discussed. 相似文献
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稀土环己烷酸配合物合成及振动光谱研究 总被引:2,自引:0,他引:2
The solid state complexes of trivalent lanthanid, yttrium and scandium with cyclohexane carboxylic acid have been isolated and characterized by IR and Raman spectroscopy. It was found that there are only chelated carboxylate groups in the scandium complex and that there are the chelated, bridged and chelate-bridged carboxylate groups in other rare earth complexes. The former is a mononuclear complex and the latter is a polynuclear polymer. The RE—O coordinate bonds possess the characters of convalent ionic bond. 相似文献
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铕β-二酮螯合物的振动光谱 总被引:1,自引:0,他引:1
测定了螯合物(2-NTFA)_4Eu(L)H和(TTA)_4Eu(L)H的付里叶红外和拉曼光谱,并讨论了(2-NTFA)_4En(L)H的结构和中性分子L对光谱的影响。 相似文献
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用EHMO方法对钒的2,4-二甲基戊二烯开环夹心化合物及其Lewis碱的加合物做了量子化学计算,说明了它们的磁性、稳定性、戊二烯上的取代甲基和Lewis碱配位体的作用及构型等问题。 相似文献