Mechanochemical Polyoxometalate Super-Reduction with Lithium Metal.

ABSTRACT: In this first systematic investigation of mechanochemical polyoxometalate (POM) reduction, (TBA)₃[PMo₁₂O₄₀] was reacted with n equiv of lithium metal (n = 1-24) to generate PMo₁₂/n products which were shown to be mixtures of electron-rich PMo₁₂Li_x species. FTIR analysis revealed the lengthening/weakening of terminal Mo═O bonds with increasing levels of reduction, while EXAFS spectra indicated the onset of Mo-Mo bond formation at n ∼ 8 and a significant structural change at n > 12. Successive Mo^VI reductions were monitored by XANES and XPS, and at n = 24, results were consistent with the formation of at least one Mo^IV

SUBMITTER: Pascual-Borras M 

PROVIDER: S-EPMC11440509 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature