【摘要】 本文报道标题化合物[Sc（NO₃）₃（OH₂）₃]·（18-冠-6）的合成及其晶体结构.该晶体属正交晶系,空间群为Pna2₁,Z=4.晶格参数为:α=15.300（3）,b=10.879（3）,c=14.052（3）A。可观测的独立反射数目为975个.晶体结构利用Patterson函数法与Fourier迭代法得到.经最小二乘修正,最后的R=0.0739.Sc（Ⅲ）离子同三个双齿配体硝酸根与三个水分子氧配位,构成九配位的配合物.配位多面体是稍有扭曲的单帽四方反棱柱.配位水分子的六个氢原子分别与上下两层冠醚环上的氧原子生成氢键,形成多层夹心分子缔合物.更多还原

【Abstract】 The crystal and molecular structure of the title compound was determined from single crystal X-ray diffraction.The complex crystallizes in the orthorhombic space group Pna2₁ with Z=4.Lattice parameters are:a=15.300（3）,b=10.879（3）,c=14.052（3）A.The structure was solvd by Patterson and Fourier techniques and refind by least-squares to R=0.0739 for 975 reflections.The SC³⁺ ion is 9-coordinate,being bonded to three bidontate nitrate groups and to three water molecules in a cappod square antiprism.There are six hydrogon atoms in three coordinated water molecules,three of them are bonded to three oxygen atoms in the above crown ether ring;the rest of them are bonded to the lewer layer crown ether ring.Thus the complex[Sc（NO₃）₃（OH₂）₃]·（18-Crown-6）forms a muktilayersandwich sttucture.更多还原