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C_(63)H_(51)O_7PEu,三斜晶系,空间群,a=12.336(3),b=18.729(5),c=11.502(3),α=95.86(2),β=103.14(2),γ=87.89(2)°,Z=2,D_x=1.39gcm~(-3)。用6989个I>3σ(I)的可观察衍射数据对72个非氢原子的原子坐标和各向异性温度因子进行全矩阵最小二乘精修,最终的偏离因子R=0.055。中心离子Eu(Ⅲ)由七个氧原子配位,配位多面体为畸变的单帽三棱柱体,帽位由TPPO的氧原子占据,Eu—O原子间距在2.305(4)—2.367(4)之间。77K下测定了配合物的高分辨激光激发和发射光谱,结果表明配合物中Eu(Ⅲ)离子有两种格位,一具C_(2v)点对称性,另一具C_s点对称性。具有较低对称性C_s的物种在配合物中占绝对优势。77K下还记录了掺1％铕的配合物Gd(DBM)_3TPPO的发射光谱,结果表明Gd(Ⅲ)离子具有与标题化合物中Eu(Ⅲ)离子相同的格位。
(63) H 51 O_7PEu triclinic space group a = 12.336 (3) b = 18.729 (5) c = 11.502 (3) 2), γ = 87.89 (2) °, Z = 2, D_x = 1.39 gcm -3. Full-matrix least-squares refinement was performed on the atomic coordinates and anisotropic temperature factors of 72 nonhydrogen atoms using 6989 I> 3σ (I) observables. The final deviation factor R = 0.055. The center ion Eu (Ⅲ) is coordinated by seven oxygen atoms and the coordination polyhedron is a distorted single-cap triangular prism. The cap is occupied by the oxygen atoms of TPPO and the Eu-O atomic distances are between 2.305 (4) -2.367 (4) between. The results show that there are two kinds of Eu (Ⅲ) ions in the complex, one with C 2v symmetry and the other with C_s symmetry. Species with lower symmetry C_s are dominant in the complex. The emission spectra of Gd (DBM) _3TPPO doped with 1% europium were also recorded at 77K. The results show that the Gd (Ⅲ) ion has the same lattice position as the Eu (Ⅲ) ion in the title compound.