Ln（η^6—m—C6H4Me）2（AlCl4）3,（Ln=Pr,Er）的合成及Pr配合物的晶体结构

SYNTHESIS OF Ln(η6mC_6H_4Me_2)(AlCl_4) _3, (Ln=Pr, Er)AND THE CRYSTAL STRUCTURE OF Pr COMPLEX

ＬｎＣｌ３（Ｌｎ＝Ｐｒ，Ｅｒ）与ＡｌＣｌ３在二甲苯中反应，合成了η６－（ｍ－Ｍｅ２Ｃ６Ｈ４）Ｌｎ（ＡｌＣｌ４）３这两个新配合物并对其进行了元素分析、红外光谱和质谱的表征。测定了Ｐｒ配合物的晶体结构。该配合物具有扭曲的五角双锥几何构型。二甲苯和一个氯原子处于两个顶点，Ｐｒ配合物属单斜晶系，空间群Ｐ２１／ｎ，晶胞参数为ａ＝９．８７０（３），ｂ＝１６．７９４（８），ｃ＝１６．０２５（７），β＝９４．４０（３）°，Ｖ＝２６４８．５１３，Ｚ＝４。平均Ｐｒ－Ｃ为２．９５（２）。

Reaction of LnCl3(Ln=Pr,Er) with AlCl3 in mxylene gave rise to the corresponding new complexes η6(mMe_2C_6H_4)Ln(AlCl_4)_3 which were characterized by elemental analysis, IR spectra, MS The determination of X-ray diffraction for Pr complex indicates the complex has a distorted pentagonal bipyramid geometry with mxylene in one of apical positions The complex crystallized in monoclinic space group P21/n with unit cell dimensions a=9870(3),b=16794(8), c=16025(7), β=9440(3)°, V=2648513, Z=4 The average distance of PrC is 295(2)。