The Structure and Properties of the Triaquahexakis(methylthioacetato)dineodymium(III) Polymer, [Nd<sub>2</sub>(C<sub>3</sub>H<sub>5</sub>SO<sub>2</sub>)<sub>6</sub>(H<sub>2</sub>O)<sub>3</sub>]<i><sub>n</sub></i>, and the Same-ligand Complexes of Lanthanoid Elements
作者:Satoshi Kondo、Mamoru Shimoi、Akira Ouchi、Toshio Takeuchi
DOI:10.1246/bcsj.55.2840
日期:1982.9
The crystal and molecular structure of the title complex has been determined by the X-ray diffraction method. The crystal was triclinic, space group P\bar1, a=12.80(1), b=16.65(1), c=8.659(9) Å, α=104.6(1), β=93.7(2), γ=107.5(1)°, Z=2, DX=1.892(3), Dm=1.91(2) Mg m−3, μ(Mo Kα)=3.45 mm−1, and the final R value was 0.051 for 3577 reflections. The coordination number of both neodymium atoms is nine, although the coordinated atoms around one neodymium atom are arrayed in a tri-capped trigonal prism, and those around the other neodymium atom, in a mono-capped tetragonal antiprism. The neodymium atoms are arrayed on a linear chain bridged by the ligand; however, no metal-metal interaction is observed. The corresponding complexes of cerium(III), praseodymium(III), and europium(III) form isomorphous crystals with the title complex, but the complex of lanthanum(III) has the formula of ML3·4.5H2O (HL=(methylthio)acetic acid), and the complexes of dysprosium(III) and ytterbium(III), ML3·2H2O.
标题复合物的晶体和分子结构已通过X射线衍射方法确定。该晶体为三斜晶系,空间群为P\bar1,a=12.80(1) Å,b=16.65(1) Å,c=8.659(9) Å,α=104.6(1)°,β=93.7(2)°,γ=107.5(1)°,Z=2,DX=1.892(3),Dm=1.91(2) Mg m−3,μ(Mo Kα)=3.45 mm−1,最终R值为0.051,对应3577个反射。两种
钕原子的配位数均为九,尽管围绕一个
钕原子的配位原子排列成三帽三角棱柱,而围绕另一个
钕原子的配位原子排列成单帽四角反棱柱。
钕原子通过
配体排列成线性链,但没有观察到
金属-
金属相互作用。
铈(III)、
镨(III)和
铕(III)的相应复合物与标题复合物形成同构晶体,但
镧(III)的复合物具有ML3·4.5H2O的分子式(HL=
(甲硫基)乙酸),而
镝(III)和
镱(III)的复合物为ML3·2H2O。