将有机钯络合物Pd(H 2 bpydc)Cl 2(H 2 bpydc = 2,2'-联吡啶-5,5'-二羧酸)固定在多孔金属-有机骨架UiO-67(Zr 6 O 4( OH)4(bpdc)6,bpdc =对-联苯二甲酸)。使用大量不能螯合Pd络合物的H 2 bpdc配体(占混合配体的90 mol%),可以形成在MOF网络中均匀分布的分离的Pd单活性位点。掺杂Pd(II)的UiO-67与母体UiO-67骨架同构,具有较高的表面积和孔体积约。分别为2000 m 2 g -1和0.79 cm 3 g -1。该材料在芳基氯化物的催化转化方面非常高效,显示出比均相Pd对应物明显更高的活性。带有广泛取代基的氯代芳烃的Heck和Suzuki-Miyaura偶联反应可实现高收率。而且,该催化剂是可回收的和可重复使用的,在至少5个循环后给出基本相同的活性。该系统中均相分子Pd催化剂和固体MOF结构的优点的结
The First One-Pot Synthesis of Metal-Organic Frameworks Functionalised with Two Transition-Metal Complexes
作者:Ana E. Platero-Prats、Antonio Bermejo Gómez、Louise Samain、Xiaodong Zou、Belén Martín-Matute
DOI:10.1002/chem.201403909
日期:2015.1.7
The synthesis of a metal–organic framework (UiO‐67) functionalised simultaneously with two different transitionmetalcomplexes (Ir and Pd or Rh) through a one‐pot procedure is reported for the first time. This has been achieved by an iterative modification of the synthesis parameters combined with characterisation of the resulting materials using different techniques, including X‐ray absorption spectroscopy