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借助水热合成技术获得了一种新的有机-无机复合的硼钒酸盐[H_2en]_4[V_6B_(20)O_(50)H_8(H_2O)]·en·8H_2O(1)(en=乙二胺),并对其进行了红外光谱、热重分析和单晶X射线衍射等表征.化合物1的分子结构包含1个[V_6B_(20)O_(50)H_8(H_2O)]8-多酸阴离子、4个质子化的[H_2en]~(2+)阳离子、1个游离的乙二胺分子和8个结晶水分子.化合物1最有趣的结构特点体现在:夹心型的[V_6B_(20)O_(50)H_8(H_2O)]8-多酸阴离子是由2个呈交错排列的三角形{B_(10)O_(26)}簇和1个六边形的{V_6O_(18)}簇通过12个三重桥氧原子连接而成的,其中两个三角形{B_(10)O_(26)}簇相互旋转的角度为45°.
A new organic-inorganic composite boron vanadate [H 2 nn] 4 [V_6B_ (20) O_ (50) H_8 (H_2O)] · en · 8H_2O was obtained by means of hydrothermal synthesis. Amine) was synthesized and characterized by IR, TG and single crystal X-ray diffraction. The molecular structure of compound 1 contains 1 [V_6B_ (20) O_ (50) H_8 , Four protonated [H2en] ~ (2+) cations, one free ethylenediamine molecule and eight crystal water molecules.The most interesting structural features of compound 1 are as follows: [V_6B_ (20) O_ (50) H_8 (H_2O)] 8-polyanion anion is composed of two staggered triangular {B_ (10) O_ (26)} clusters and one hexagonal {V_6O_ (18) Triple bridge oxygen atom is connected, in which the two triangles {B_ (10) O_ (26)} cluster rotation angle of 45 °.