多酸高取代亚胺化衍生物的区域选择性合成
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摘要
多酸的有机亚胺共价修饰能显著改善多酸自身的结构和电子云分布,从而在材料化学、超分子组装、光电催化等领域有广泛的潜在应用~([1,2])。因为多酸的高取代亚胺衍生物种类繁多,传统的方法条件苛刻,副产物较多,难以分离提纯,因此实现多酸高取代亚胺衍生物一直以来都具有很大的挑战性。本文报道了一种区域选择性合成方法(卦象合成法),获得了系列高取代亚胺衍生物[Mo_6O_(13)(NAr)_3(μ_2-NAr)_3]~(2-),并用单晶XRD确定这些化合物的结构。该卦象合成方法具有较高的收率和选择性,有望实现不同高取代模式的多酸有机亚胺衍生物的可控合成,辅助设计多酸基有机-无机功能晶体材料。
Organoimidoylization of Polyoxometalates(POMs) can dramatically modify the electronic structures of POMs and gives rise to novel "value-adding" properties of the POMs for promising material applications including photo-electronic transformation and catalysis.To date,the preparation of multi-functionalized organoimido derivatives of POMs is generally conducted under strict condition and is time-consuming with limited yields.Herein,a series of regioselective polyorganoimido derivatives of POMs,ocatant-[Mo_6O_(13)(NAr)_3(μ_2-NAr)_3]~(2-)(Ar =phenyl(1),p-methoxyphenyl(2) and p-ethylphenyl(3)),were synthesized with high selectivity and in good yields.The one-octant synthesis protocol here may serve as an idea method to design novel nanoscale POM-based organic-inorganic multi-functional crystal materials.
引文
[1]Hao,J.;Xia,Y.;Wang,L.S.;Ruhlmann,L.;Zhu,Y.L.;Li,Q.;Yin,P.C.;Wei,Y.G.;Guo,H.Y.Angew.Chem.Int.Ed.2008,47,2626-2630.
    [2]Zhang,J.;Xiao,F.P.;Hao,J.and Wei,Y.G.Dalton Trans.,2012,41,3599-3615.

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