A series of 0D to 3D Anderson-type polyoxometalate-based compounds obtained under ambient and hydrothermal conditions

Abstract

Through using flexible ligands, a series of Anderson POM-based compounds have been obtained under ambient and hydrothermal conditions, respectively.

A series of polyoxometalate compounds by tuning N sites and numbers of ligands: syntheses, characterization and electrochemical sensing, and photocatalytic and supercapacitor properties

“…These two pairs of peaks correspond to two consecutive two-electron redox processes of the CrMo 6 anion. 25 It can be seen that there are two pairs of reversible redox peaks I–I′ and II–II′ in the range of potentials from −50 to +500 mV in 6 –CPE, and the half-wave potentials E 1/2 = ( E pa + E pc )/2 are at +250(I–I′) and +95.5(II–II′) (scan rate: 200 mV s −1 ). These two pairs of peaks correspond to two consecutive two-electron redox processes of the Mo 8 anion.…”

Hydrothermal Reactions of [CoIII(C2O4)(NH3)4]+ and Polyoxomolybdates: Depolymerization of Polyoxomolybdates and in Situ Reduction of Cobalt

“…The anion in 3 was found to be a B-Anderson-type − heteronuclear POM identified as [Co II (OH) 6 ­Mo 6 O 18 ] 4– . The Anderson ion-based compounds are relatively rare when compared with the classical anions, such as Lindquist, Keggin, or Wells-Dawson POM-s, and have been synthesized both under ambient and hydrothermal conditions . It should be noted that all the {Co II/III (OH) 6 ­Mo 6 O 18 } Anderson-type compounds described in the literature were synthesized using cobalt­(II) compoundsusually salts of Co­(II) such as cobalt­(II) acetateas the source of cobalt. − To the best of our knowledge, this is the first instance of a Co­(II) Anderson anion being formed by in situ reduction of Co­(III).…”

POM-based compounds modified by mono- and bis-triazole derivatives: photocatalytic, electrochemical, and supercapacitor properties

“…In the spectra of 1 and 2, the characteristic peaks at 462-927 cm −1 and 466-937 cm −1 are attributed to ν(Mo-O t ) and ν(Mo-O b/c -Mo), respectively. 26 For 3, the characteristic peaks at 472-946 cm −1 are attributed to the Mo-O t and Mo-O b/c -Mo units. 27 For 4, the characteristic peaks at 469-966 cm −1 are attributed to the Mo-O t and Mo-O b/c -Mo units.…”