17电子钒开环夹心羰基配合物的合成及XRD、IR、EPR研究

Syntheses and Structures of 17-Electron Pentadienyl Vanadium Carbonyl Complexes

以４种甲基取代戊二烯基为配体合成了４个过渡金属钒开环夹心羰基配合物［２，４－（ＣＨ３）２Ｃ５Ｈ５］２ＶＣＯ（１）、［２，３－（ＣＨ３）２Ｃ５Ｈ５］２ＶＣＯ（Ⅱ）、［２－ＣＨ３Ｃ５Ｈ６］２ＶＣＯ（Ⅲ）和［３－ＣＨ３Ｃ５Ｈ６］２ＶＣＯ（Ⅳ），其中Ⅱ、Ⅲ、Ⅳ为新配合物。用Ｘ射线单晶衍射、ＩＲ、ＥＰＲ法对所合成配合物进行了结构表征，发现Ｉ具有两种晶相。

Using four kinds of methyl pentadienyl ligands,carbonyl complexes of open metallocene vanadocenes,[2,4-(CH3)2C5H5]2VCO(I),[2,3-(CH3)2C5H5]2VCO(I)和[2-CH3C5H6]2VCO(Ⅱ)and[3-CH3C5H6]2VCO(Ⅳ)have been synthesized,in which I,Ⅲand Ⅳ are new complexes.I,Ⅱ,Ⅲ and Ⅳ have been characterized by X-ray diffraction,IR and EPR methods, Two kinds of phases of I in solid state have been found.