Soft x-ray absorption spectroscopy study of the electronic structures of the MnFe Prussian blue analogs (RbxBay)Mn[3−(

Abstract

The electronic structures of Prussian blue analog (Rb x Ba y )Mn [3−(x+2y) 6 ]. According to the CI cluster model analysis, it is necessary to take into account both the ligand-to-metal charge transfer and the metal-to-ligand charge transfer in describing Fe 2p XAS, while the effect of charge transfer is negligible in describing Mn 2p XAS. The CI cluster model analysis also shows that the trivalent Fe 3+ ions have a strong covalent bonding with the C ≡ N ligands and are under a large crystal-field energy of 10Dq ∼ 3 eV, in contrast to the weak covalency effect and a small 10Dq ∼ 0.6 eV for the divalent Mn 2+ ions.

Role of the Outer Metal of Double Metal Cyanides on the Catalytic Efficiency in Styrene Oxidation

“…The reported catalytic activity in this family of compounds shows a certain dependence on the involved metal (M) [15], an effect that deserves to be studied since it could be used as a way of tuning the catalytic properties of these materials. The outer cations of this type of compound maintain mixed valences [16,17], which can act as mediators in the transfer of electrons [18]. Likewise, all M metals are sited at the pore surface, with the possibility of direct interaction with the reactants molecules in the reaction medium.…”