Syntheses, structures and catalytic properties of Evans–Showell-type polyoxometalate-based 3D metal–organic complexes constructed from the semi-rigid bis(pyridylformyl)piperazine ligand and transition metals

Abstract

Two 3D Evans–Showell-type POM-based different transition metals–bis-pyrazine–bis-amide complexes act as heterogeneous catalysts for the oxidation of benzyl alcohol.

Two novel supramolecular structures of Evans–Showell type polyoxometalate for heterogeneous and efficient catalytic conversion of different sulfides

“…Inspired by the remarkable performance of the Evans–Showell type POM [Co 2 Mo 10 O 38 H 4 ] 6− in catalyzing oxidation reactions, 41,42 our group has been interested in understanding whether such POM hybrid frameworks can effectively catalyze the oxidation of sulfides as heterogeneous catalysts. In a six-year-old study, Hou used {Co 2 Mo 10 } units to construct several examples of covalently bonded high-dimensional host–guest hybrid compounds with different organic molecules, achieving efficient catalytic conversion of sulfides in about four hours.…”

A Metal‐Organic Complex Constructed from Co(II), Azo‐amide‐pyridyl and Benzenetricarboxylate Mixed Ligands: Efficient Catalysis for Selective Oxidation of Benzyl Alcohols to Benzyl Acids

“…Metal-organic complexes (MOCs) consist of periodically connected metal nodes and organic ligands, [18] which have become one of the most popular heterogeneous catalysts, especially in various catalytic oxidation processes, due to their structural diversity, functional adaptability. [19][20][21] Additionally, metal centers in MOCs are generally considered to be catalytic active sites in these oxidation processes to promote the reaction process. [22][23][24] Sometimes, organic ligands also play a certain role in some organic reactions.…”

Cobalt complexes tuned by Anderson-type polyoxometalates and bis-amide derivative ligands featuring a ‘V’-like connector for efficient ampere sensing and the visible-light catalytic reduction of Cr(vi)

“…In particular, N-donor ligands containing pyridyl, tetrazole, and imidazole groups have become popular candidates in recent years, due to the fact that the multiple N-donors makes it possible for them to play active roles in the construction of versatile structures and stable POM-based frameworks. [26][27][28] Further, the design of amide derivative ligands containing multiple N/O sites enriched the structures and expanded the application of POM-based complexes. For instance, two Evans-type POMbased complexes constructed from two different bis-pyridinebis-amide ligands, synthesized by Li et al showed excellent catalytic oxidation performance.…”