A 6-Ti-substituted polyoxometalate, (NH4)5Cs7Na3H2[Cs@(Ti2GeMo10O39)3]·34H2O (1), was synthesized by reacting (NH4)6Mo7O24·4H2O, GeO2, and TiOSO4 through the conventional aqueous method. Polyanion 1a is composed of three Ti2GeMo10} segments linked by Ti–O–Ti linkages and shows a trefoil-shaped structure. Furthermore, one Cs+ cation is encapsulated in the cavity of 1a. Notably, it possesses the highest
通过(NH 4 ) 6 Mo反应合成了6-Ti取代的多
金属氧酸盐,(NH 4 ) 5 Cs 7 Na 3 H 2 [Cs@(Ti 2 GeMo 10 O 39 ) 3 ]·34H 2 O( 1 )。通过常规
水法制备7 O 24 ·4H 2 O、GeO 2和TiOSO 4 。聚阴离子1a由三个通过Ti-O-Ti键连接的Ti 2 GeMo 10 }链段组成,并显示出三叶形结构。此外, 1a的空腔中封装有一个Cs +阳离子。值得注意的是,它在已报道的多
钼酸盐中拥有最多数量的 Ti 中心。此外,作为高效多相催化剂, 1能够在20分钟内转化甲基苯基
硫醚,得到96.4%的相应亚砜,且具有良好的可回收性。