0000000000494507
AUTHOR
Ira A. Weinstock
Soluble Complexes of Cobalt Oxide Fragments Bring the Unique CO2 Photoreduction Activity of a Bulk Material into the Flexible Domain of Molecular Science
The deposition of metal oxides is essential to the fabrication of numerous multicomponent solid-state devices and catalysts. However, the reproducible formation of homogeneous metal oxide films or of nanoparticle dispersions at solid interfaces remains an ongoing challenge. Here we report that molecular hexaniobate cluster anion complexes of structurally and electronically distinct fragments of cubic-spinel and monoclinic Co3O4 can serve as tractable yet well-defined functional analogues of bulk cobalt oxide. Notably, the energies of the highest-occupied and lowest-unoccupied molecular orbitals (HOMO and LUMO) of the molecular complexes, 1, closely match the valence- and conduction-band (VB…
Visible-Light Water Oxidation by a Polyoxometalate Complexed 275 Iron-Atom Hematite Core
Although metal-oxide nanocrystals are often highly active, rapid aggregation (particularly in water) generally precludes detailed solution-state investigation of their catalytic reactions. This is equally true for visible-light driven water oxidation by hematite α-Fe2O3 nanocrystals, that bridge a conceptual divide between molecular complexes of iron and solid-state hematite photoanodes. We now report that the aqueous solubility and remarkable stability of polyoxometalate- (POM-) complexed 275 iron-atom hematite cores make it possible to investigate visible-light driven water oxidation at this frontier area using the versatile toolbox of solution-state methods typically reserved for molecul…
CSD 2075252: Experimental Crystal Structure Determination
Related Article: Guanyun Zhang, Mark Baranov, Fei Wang, Josep M. Poblet, Sebastian Kozuch, Nitai Leffler, Alexander I. Shames, Juan M. Clemente-Juan, Alevtina Neyman, Ira A. Weinstock|2021|J.Am.Chem.Soc.|143|20769|doi:10.1021/jacs.1c08817