【摘要】 二甲亚砜硝酸铕Eu（NO₃）₃·4DMSO晶体属单斜晶系。空间群为C_2/c-C⁶_2h。晶胞参数a=14.806（9）,b=10.948（3）,c=15.335（4）,β=108.07（7）°晶胞内分子数z=4。用PW-1100四圆衍射仪收集强度数据,独立衍射点数为2270个。用重原子法解晶体结构。结构参数用全矩阵及方块矩阵最小二乘法修正,最后R因子为0.069。铕离子由10个氧原子配位。铕和配位氧之间的距离:Eu—O_DMSO=2.38,Eu—O_NO3= 2.61。更多还原

【Abstract】 The crystal of dimethyl sulphoxide complex of europium Eu (NO3)3·4DMSO belongs to the monoclinic system. The space group is Cz/c-C2h6. The cnystal parameters are a = 14.806 (9) A, b = 10.948 (3) A, c = 15.335 (4) A and β= 108.07 (7) °. Four molecules are contained in a unit cell, z = 4. The diffraction data have been collected by using PW-1100 four-circle diffractometer, the total number of independent diffractions amounts to 2270. The structure was solved by heavy-atom method, and structure parameters have been refined by means of full-matrix and block-diagonal least square method, R = 0.069. The europium ion in this structure is found to be coordinated by ten oxygen atoms. The distances between the europium and the coordinating oxygens are Eu-ODEMSO=2.38 A, Eu-ONO3=2.61 A.更多还原