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用Phillips PW-1100型单晶四圆衍射仪收集五磷酸铽晶体的三维强度数据.应用重原子法测定了晶体结构.在四圆衍射仪上测得晶胞参数:α=8.721(3)A,b=8.877(2)A,c=12.911(1)A,β=90.52(2)°,Z=4.空间群为C_(2h)~5-P2_1/c.原子坐标参数、标度因子参数及所有原子的各向异性温度因子参数一起进行全矩阵及方块矩阵最小二乘修正,最后R因子为0.075,R_ω=0.079.晶体结构分析结果表明,结构系由阳离子连结阴离子带构成络合物.由氧原子构成阳离子的八配位稍歪扭的正方反棱柱体.Tb-Tb最短距离为5.904A.
The three-dimensional intensity data of terbium pentaphosphate crystals were collected by Phillips PW-1100 single crystal four-circle diffractometer. The crystal structure was determined by the heavy atom method. The cell parameters were measured on a four-circle diffractometer: α = 8.721 (3) A , space group C_ (2h) ~ 5-P2_1 / c. Atomic coordinate parameters, scale factor, b = 8.877 (2) A, c = 12.911 (1) A, β = 90.52 (2) Parameters and all the anisotropic temperature parameters of the atoms together with the full matrix and least square matrix correction matrix, the final R factor of 0.075, R_ω = 0.079. The crystal structure analysis showed that the structure of the cation linked by the anion band to form a complex Oxygen atoms constitute the cation of the octahedral slightly skewed square antiprism Tb the shortest distance of 5.904A.