Tandem-like vanadium cluster chains in a polyoxovanadate-based metal–organic framework for efficient catalytic oxidation of sulfides

Abstract

A novel polyoxovanadate-based metal‒organic framework (POV-MOF), [Ni(bix)2]{V4O11} (V-Ni-MOF, bix = 1,4-bis(imidazol-1-ylmethyl)benzene), was successfully synthesized and structurally characterized. Single crystal X-ray diffraction analysis shows that the {V4} clusters in V-Ni-MOF are...

A POM-based porous supramolecular framework for efficient sulfide–sulfoxide transformations with a low molar O/S ratio

“…Moreover, considering the selectivity of MPSO, TOF and the O/S ratio, the catalysts we synthesized, especially catalyst 1, are superior to most of the catalytic systems that have been reported thus far (Tables 1 and S4 †). [51][52][53][54][55][56][57][58] This series of comparative results suggested that designing porous frameworks with more efficient mass transfer channels and as many exposed active sites as possible may be an efficient strategy by which to build more powerful catalysts.…”

Highly efficient multi-site synergistic catalysis of a polyoxovanadate-based metal–organic framework for benzylic C–H bond oxidation

“…Currently, the further development of POMOF catalysts requires a deep understanding of their catalytic mechanisms, which is important for guiding the structural design and functional optimization of POMOF catalysts. [42][43][44] Herein, for achieving a highly efficient catalyst for the oxidation of benzylic C-H bonds and a suitable model for mechanistic studies, we constructed a novel polyoxovanadatebased MOF, [Cu I 2 Cu II (bix) 2 ]{V 4 O 12 } (1, bix ¼ 1,4-bis(imidazole-1-ylmethyl)benzene). The structure of 1 contains three possible active centers in close proximity, V V in the highly oxidized state in the unique U-type {V 4 } cluster, Cu I with redox ability and Cu II with coordination unsaturation.…”

“…Currently, the further development of POMOF catalysts requires a deep understanding of their catalytic mechanisms, which is important for guiding the structural design and functional optimization of POMOF catalysts. 42–44…”

Successive constructions of regular tetra-, hexa- and octanuclear microporous polyoxovanadates(iii) for gas adsorption

“…Polyoxovanadates (POVs), as a prominent branch of polyoxometalates (POMs) with well-defined architectures and versatile physicochemical properties, have been investigated in the fields of catalysis, 1–3 molecular magnetism, 4,5 energy storage, 6,7 biomedicine, 8 etc. Compared with the extensive literature on polyoxomolybdates and polyoxotungstates, a relatively few studies have been concentrated on POVs.…”