环戊二烯基三氯化铈的表征

The CharacTerization of CpCeCl3·nTHF3·nTHF(Cp=Cyclopen tadiengl,n=0,1,2,3,THF=tetray drofuran)

通过元素分析、价态分析、紫外光谱和红外光谱分析确认合成了ＣｐＣｅＣｌ３·ｎＴＨＦ（Ｃｐ＝环戊二烯基，ｎ＝０，１，２，３，ＴＨＦ＝四氢呋喃）。利用红外光谱、紫外光谱、磁学和热分析研究了该化合物的化学键性质。实验结果表明铈的ｆ轨道没参与成键，环戊二烯基与铈（Ⅳ）形成了定域的Ｃｅ－Ｃδ键。这种键的热稳定性很高。

Abstract Complex,CpCeCl3·nTHE was pre pared and characterized by elemental and valent analyses,ynfared spectrum(IR)and ultraviolet spectrum(UV).The nature of the band between cerium and cyclopen-tadieny was in vestigated by IR,UV,megnethc susceptibility and thermal analysis.It was suggested that the formation of the bad from cyclopen tadieny to cerillm was not throuhg f orbits of the metal.The localized bond which showed higher thermal stability was obserrde.