State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, PR China.
Dalton Trans. 2010 Sep 14;39(34):7960-7. doi: 10.1039/c0dt00305k. Epub 2010 Aug 4.
Systematic explorations of new compounds in the La(3+)-V(4+)/V(5+)-iodate system led to three new lanthanum(III) vanadium iodates, namely, LaVO(IO(3))(5), LaV(2)O(6)(IO(3)), and LaVO(2)(IO(3))(4).H(2)O. LaVO(IO(3))(5) is isostructural with LaTiO(IO(3))(5) and its structure contains a 0D VO(IO(3))(5) anionic unit composed of one VO(6) octahedron linked to five IO(3)(-) groups. Such 0D anionic units are separated by La(3+) ions. LaV(2)O(6)(IO(3)) exhibits a unique 3D framework composed of 1D V(2)O(6) ladder like chains and 2D La(IO(3)) layers. LaVO(2)(IO(3))(4).H(2)O is isostructural with LnMoO(2)(IO(3))(4)(OH) (Ln = La, Nd, Sm, Eu) with a polar space group P2(1), its structure contains a novel 0D VO(2)(IO(3))(4) anionic unit composed of one VO(6) octahedron linked with four IO(3)(-) groups and two terminal O(2-) anions. Such 0D anionic units are separated by La(3+) ions. The structure of LaVO(2)(IO(3))(4).H(2)O can also be described as the 8-MR channels of the 3D La(IO(3))(4) anion being filled by the VO(6) octahedra and lattice water molecules. LaVO(2)(IO(3))(4).H(2)O displays a weak SHG response of about 0.2 times that of KDP. Optical, thermal stability and magnetic susceptibility measurements as well as theoretical calculations have also been performed.
在 La(3+)-V(4+)/V(5+)- 碘酸盐体系中对新化合物的系统探索导致了三种新的镧(III)钒碘酸盐，分别为 LaVO(IO(3))(5)、LaV(2)O(6)(IO(3)) 和 LaVO(2)(IO(3))(4).H(2)O。LaVO(IO(3))(5)与 LaTiO(IO(3))(5) 同构，其结构包含一个由一个 VO(6) 八面体与五个 IO(3)(-) 基团相连组成的 0D VO(IO(3))(5) 阴离子单元。这种 0D 阴离子单元由 La(3+) 离子隔开。LaV(2)O(6)(IO(3)) 呈现出独特的 3D 框架，由 1D V(2)O(6) 梯状链和 2D La(IO(3)) 层组成。LaVO(2)(IO(3))(4).H(2)O 与 LnMoO(2)(IO(3))(4)(OH)（Ln = La、Nd、Sm、Eu）同构，具有极性空间群 P2(1)，其结构包含一个由一个 VO(6) 八面体与四个 IO(3)(-) 基团和两个末端 O(2-) 阴离子相连组成的新颖的 0D VO(2)(IO(3))(4) 阴离子单元。这种 0D 阴离子单元由 La(3+) 离子隔开。LaVO(2)(IO(3))(4).H(2)O 的结构也可以描述为 3D La(IO(3))(4) 阴离子的 8-MR 通道被 VO(6) 八面体和晶格水分子填充。LaVO(2)(IO(3))(4).H(2)O 表现出约 0.2 倍于 KDP 的微弱 SHG 响应。还进行了光学、热稳定性和磁化率测量以及理论计算。
