基于环状阴离子[H6W9O33]6-的担载型含钌多酸的合成、结构与表征

Synthesis, structure and characterization of supported ruthenium-containing polyoxometalate based on cyclic anion [H6W9O33]6-

以Na2WO4·2H2O、RuCl3、二甲基亚砜(DMSO)和Sb2O3为原料,利用水热合成法,得到了一例基于环状阴离子[H6W9O33]^6-的担载型含钌多酸NaH[H6W9O33(Ru(DMSO)3)2]·4.5H2O(1),并用X-射线单晶衍射、元素分析、红外光谱等方法对该化合物进行结构表征.结构分析表明,化合物1为六方晶系,P63/m空间群,其阴离子[H6W9O33(Ru(DMSO)3)2]^2-(1a)是由两个{Ru(DMSO)3}基团分别通过3个Ru-O-W键修饰在环状多酸阴离子[H6W9O33]^6-的两侧构成的.此外,两个{Ru(DMSO)3}基团上所有氧原子都与Na^+离子配位,使得Na^+离子与[H6W9O33(Ru(DMSO)3)2]^2-阴离子交替相连构筑成一维链状结构.

A new ruthenium-supported isopolyoxometalate NaH[H6W9O33 (Ru(DMSO) 3 ) 2 ]·4.5H2O ( 1 ) based on the cyclic polyoxoanion [H6W9O33 ]^6- has been synthesized by hydrothermal condition and then characterized by single-crystal X-ray diffraction, elemental analysis and IR spectroscopy. Compound 1 crystallizes in the hexagonal space group P6 3 /m. The novel polyoxoanion [H6W9O33 (Ru(DMSO)3 ) 2 ]^2-( 1a ) is stabilized by two Ru(DMSO) 3 groups with three Ru-O-W bonds on both sides of the wheel-like polyoxoanion [H6W9O33 ]^6-, which can further construct a one-dimensional chain-like structure connected by Na^+ ions.