A bifunctional POM-based Cu-viologen complex with mixed octamolybdate clusters for rapid oxidation desulfurization and effective photogeneration of hydrogen

Sustainable synthesis of thiosulfonates and disulfides by molybdenum-catalyzed selective oxidation of thiols

“…1f), which was assigned to O–O stretching. 18 Then, 3 would attack the peroxo-species to produce an intermediate E through the nucleophilicity of the S atom, 19 and the resulting intermediate E would convert into a transient radical Mo V intermediate F by performing a radical process, 20 followed by oxidizing to afford product 2 and recover the [ Mo-2 ] catalyst (Fig. 3).…”

Structure-induced selective adsorption of diverse dyes and Cr(vi) photoreduction using two new polyoxometalate-based metal–viologen complexes

“…32) ( BHU-1 ) and H 4 [Cu I 2 Cl 2 (Hbcbpy) 4 ][α-Mo 8 O 26 ][β-Mo 8 O 26 ]·H 2 O (ref. 33) ( BHU-2 ) we reported earlier, BHU-3 and BHU-4 are based on Keggin-type POMs. BHU-3 exhibits a supramolecular structure, containing a “windmill-like” [Cu(Hbcbpy) 4 ] 5+ unit and two [PW 12 O 40 ] 3− anions.…”

“…Therefore, we introduce the electron-deficient viologen ligand HbcbpyCl (1-(4-carboxybenzyl)-4,4′-bipyridinium chloride, Scheme 1) into the Keggin-type POMs system to construct multifunctional POMOCs. As an extension of our work, 32,33 two novel POMOCs H[Cu I (Hbcbpy) 4 (PW 12 O 40 ) 2 ]·7H 2 O ( BHU-3 ) and H[Co II 2 (bcbpy) 3 (H 2 O) 5 (Co III W 12 O 40 )]·6H 2 O ( BHU-4 , bcbpy = 1-(4-carboxybenzyl)-4,4′-bipyridinium) were synthesized and characterized. Compared with [Co II (bcbpy) 2 (θ-Mo 8 O 26 ) 0.5 ]·5H 2 O (ref.…”

Four POM-Viologen Color-Changing Materials with Fast Color Response under Various External Stimuli

“…Polyoxometalates (POMs) can be divided into two categories: isopolyanions, obtained by the condensation of the same inorganic oxometalates, and heteropolyanions, formed by the condensation of different kinds of inorganic oxometalates. − Since Keggin in Britain obtained the famous Keggin structure model through an X-ray powder diffraction experiment in 1934, heteropolyanions have entered the public’s field of vision . In recent years, Keggin-type heteropolyanions have been used in various reactions, such as catalysis, , electrochemistry, , antibacterial activity, , and nanomaterial loading. , Keggin anions own unique properties, such as good chemical configuration, nontoxicity, high applicability, and redox potential .…”