噻吩甲酰三氟丙酮合铕螯合物(TTA)_4Eu(4—MePy)H的分子结构

题目所指化合物分子式为(C_8H_4O_2F_3S)_4·Eu·(C_6H_7N)H,分子量1130.4,晶体空间群PT,晶胞参数a=16.323;b=12.364;c=11.714;α=108.54,β=90.22,Υ=102.36°;晶胞中有两个分子。由重原子法解出铕原子的位置,用加权傅里叶综合解得粗结构。经块对角矩阵最小二乘修正,偏离因子R=0.046。

Molecular Structure of Picoline - Tetrakis(4,4,4- Trifluoro - 1 - 2' - Thienyl) -1,3- Butanedione)Europium (Ⅲ), (TTA )_4 Eu(4-MePy) H

The molecular structure of picoline-tetrakis (4,4 ,4-trifluoro-1-(2-thienyl)-1 ,3-butanedione) europium (III) is reported. The molecular formula is EuC38H24O8S4F12N. The crystal is triclinic withspsce group P ,a=16.323, b=12.364, c=11.714(A) , α=108.54 ,β=90. 22, γ=102.36(°), and Z=2. The intensity data are collected on a Pw-1100 fourcircle diffractometer. The total number of independent reflections amounts to 6804. The crystal structure has been determined by heavy atom method and refined by block least squares technique for positional parameters and anisotropic temperature factors of nonhy-drogen atoms. The final R factor is 0.046 for 5241 reflexions. All the positions of hydrogen atoms were located by the difference Fourier syntheses.