【摘要】 在乙腈介质中培养出硝酸钪和苯并-15-冠-5形成的配合物单晶[Sc（NO₃）,（H₂O）₂)。（B15C5）,对其进行了熔点、元素分析、红外光谱、摩尔电导等方面的鉴定。X射线结构分析表明,该晶体属单斜晶系,空间群为P2_1/n,晶胞参数为:α=9.405（6）,b=15.569（8）,c=15.896（2）,β=95.92（1）°,V=2315.5³,,Z=4,D_c=1.53g/cm³,D₀=1.54g/cm³。Sc（Ⅲ）离子同三个双齿硝酸根和两个水分子配位,构成八配位的配合物,并通过氢键与冠醚形成分子缔合物。更多还原

【Abstract】 The single crystal of the complex [Sc(NO3), (H3O)2[·(B15C5) has been prepared and characterized by elemental analyses, 1R spectra and molar conductance. The structure of the complex is determined by X-ray single crystal diffraction analyses. The crystal of the complex is monoclinic, space group P21/n with cell parameters: a = 9.405(6), b=15.569(8), c= 15.896(2) A,β = 95.92(1)°, V = 2315.5A3,Z = 4, Dc = 1.538/cm3, D0 = 1.54g/cm3. The structure has been refined to R = 0.051 and Rw = 0.055 using 3172≥3σ(Ⅰ) observed data. Here the crown is not coordinated to the metal ion but is linked to the [Sc(NO3) 3(H2O)2] molecule by O...H-O bonds. The Sc-O bond lengths are 2.158(3)-2.254(3) A for nitrato-and 2.123(3)-2.143(3) A for water oxygens.更多还原