摘要
标题化合物SmCl_3(THF)_4(M_r=545.2)晶体属正交晶系,空间群为Pdd 2。晶胞参数为a=9.211(4),6=16.436(6),c=29.666(12);V=4491(3) ~3;Z=8,D_c=1.61g.cm^(-3),F(000)=2184,μ_c=30.3cm^(-1)。最终的偏因子R=0.063,R_(to)=0.062。Sm^(3+)与三个Cl^-及四个四氢呋喃分子中氧原子配位,形成一个五角双锥的空间结构,其中二个氯原子分别位于二个顶点位置。分子中有一个通过Sm^(3+)及Cl^-的C_2轴。Sm-Cl及Sm-0的平均键长分别为2.683(5)及2.469(11)。
The crystal and molecular sturcture of SmCl3(THF)4 is reported herein. The complex crystallizes in the orthorhombic space group Fdd2 with a = 9. 211(4), 6 = 16. 436(6), C = 29. 666 (12)(?); V = 4491(3)(?)3; Z = 8, Dc=1,61 g.cm-3, F(000) = 2184, μc=30. 3 cm-1 and Mr = 5465. 2. The final factors R = 0. 063 and Rw = 0. 062. The Sm3+ ion is bonded to three Cl- ions and four oxygen atoms of THF to form a pentagonal bipyramid. Two chlorine atoms are located at the two apices of the pentagonalbipyramid. The whole molecule has a two-fold symmetry axis through the ions Sm3+ and Cl-. The average bond lengths of Sm-Cl and Sm-O are 2. 683(5) A and 2. 469(11)(?) , respectively.
基金
稀土化学和物理开放实验室资助
