Abstract
Merging gold(I) cations with polyoxometalate anions results in various interclusters and complexes. Herein, the synthesis of these newly emerging gold(I)/polyoxometalate materials is reviewed. The applications of these promising hybrids in organic catalysis are also summarized and evaluated in terms of the advantages and limitations of the catalysts including efficiency, synergistic effects and recyclability.
Highlights
In the periodic table of elements, gold (Au) is located in the sixth period and belongs to group eleven with copper and silver
The chemistry of gold-POM hybrids is at an early stage, but its development has accelerated during the recent years with the idea to merge the remarkable properties of both entities in the same material
Gold-POM supramolecular intercluster compounds (SICCs) have emerged, but are so far restricted to phosphane gold-oxonium or phosphane gold-ammonium clusters. Their chemistry is facing two challenges: 1) find the suitable conditions to have reproducible experiments which can be scaled up; 2) better understand the formation of the gold clusters to predict their future geometries in the solid state
Summary
In the periodic table of elements, gold (Au) is located in the sixth period (horizontal row) and belongs to group eleven (vertical column) with copper and silver (coinage metals). POMs are versatile solids, which can exhibit a strong acidity when their negative charges are compensated by protons, or oxidative properties.[6] Despite the limitations induced by their low surface area, POMs possess a strong potential for performing molecular design of hybrid materials associated with organic or inorganic molecules.[7] In this area of research, POMs have notably been used to support and stabilize gold nanoparticles for various applications and have been recently reviewed in 2016.[8] in the continuously growing field of POMs, new types of hybrid materials are emerging This Minireview is focused on the synthesis of interclusters and complexes merging gold(I) cations and POM anions, and their applications in gold catalysis
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