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３，５－二甲基吡唑（ＨＰｚＭｅ２）在ＴＨＦ溶液中和（Ｃ５Ｈ５）３Ｙ反应，制得了双核钇配合物［（Ｃ５Ｈ５）－Ｙ（η２－ＰｚＭｅ２）（μ－ＰｚＭｅ２）］２（Ｉ）和［Ｙ（η２－ＰｚＭｅ２）２（μ－ＰｚＭｅ２）（μ－ＴＨＦ）］２（Ⅱ），后者揭示了一种合成三吡唑基稀土化合物的新方法．化合物１１的Ｘ射线单晶衍射分析显示，该晶体属三斜晶系，空间群Ｐ１，晶胞参数： ａ＝ １．０７９ ８（１） n ｍ， ｂ＝ １．０８１ ８（１） ｎｍ， ｃ＝ １．１３１３（１） ｎｍ， ａ＝ ７６．９１４（２）°，β= ６８．９４０（２）°， γ＝６０．５１０（２）°，Ｖ＝１．０７１５（２）ｎｍ３，Ｚ＝１．最后的一致性因子Ｒ＝０．０４４ ５．研究表明，由于四重桥结构的位阻太大，Ｍｅ２ＳｉＯ只能单插入化合物Ｉ中的Ｌｎ—Ｎ（桥）键，生成［（Ｃ５Ｈ５）Ｙ－（η２－ＰｚＭｅ２）（μ－ＯＳｉＭｅ２ＰｚＭｅ２）］２（Ⅲ），但不能插入化合物Ⅱ中的 Ｌｎ—Ｎ（桥）键．
(C5H5) -Y (η2-PzMe2) (μ-PzMe2)] 2 (I) was synthesized by the reaction of 3,5-dimethylpyrazole (HPzMe2) And [Y (η2-PzMe2) 2 (μ-PzMe2) (μ-THF)] 2 (Ⅱ) which revealed a new method for the synthesis of trispyrazole based rare earth compounds. The X-ray diffraction analysis of compound 11 showed that the crystal belongs to the triclinic system with space group P1 and unit cell parameters: a = 1.079 8 (1) n m, b = 1.081 8 (1) nm, a = 76.914 (2) °, β = 68.940 (2) °, γ = 60.510 (2) °, V = 1.0715 (2) nm3, Z = 1. The final concordance factor R = 0.044 5. The results show that due to the steric hindrance of tetrabasic bridge, Me2SiO can only insert the Ln-N (bridge) bond in compound I to generate [(C5H5) Y- (η2-PzMe2) (μ-OSiMe2PzMe2)] 2 (III), but not the Ln-N (bridge) bond in compound II.