Binuclear Intermediates in the Reaction between Uranium(VI) and Chromium(II)

Kinetics and mechanism of hexachloroiridate(iv) oxidation of tellurium(iv) in aqueous solutions

“…1), especially at higher energy, seems larger than would be expected for an outer-sphere mechanism. Again, it has been reported previously [10][11][12][31][32][33][34][35] that the entropy of activation tends to be more positive for outer-sphere mechanisms, whereas the values of DS a are more negative for inner-sphere mechanisms. 15,16,[31][32][33][34][35][36][37][38] As is shown in Table 3, it was found that the entropy of activation of the present reaction lies in the range of redox reactions of an inner-sphere nature.…”

“…13 Although the rate-law expression here provides no information on the nature of electron-transfer, whether it is of inner-or outer-sphere nature, some information may be expected by examining the magnitude of the rate constants and the activation parameters. [31][32][33][34][35][36][37][38] If the rate constant of the redox step is greater than that of the rate of substitution, i.e., the transfer of electrons is faster than the rate of proton release, the reaction is of the outer-sphere type. On the other hand, if the release of protons occurs prior to the electron-transfer process, the reaction should be of an inner sphere nature.…”

Cation–cation interaction in crystalline actinide compounds

“…3 As for sodium, magnesium and some lanthanide [e.g., La(III), Ce(III) and Y(III)] cations, they are inactive with respect to NpO 2 . 1,2 Apart from Np(V), CC interactions are characteristic of U(V), 4,5 Pu(V) 6 and Am(V) 7 ions.…”

The Role of Residual Charges in the Interaction between NpO2+ and Th4+ Cations: Spectrophotometric and Computational Studies

“…[1] Even though the oxido moiety is assumed to be chemically inert in these cations, vast literature exists that shows that the pentavalent Np cation (NpO 2 + ) displays a tendency of binding with charged metal ions. [4][5][6] Interestingly, Madic et al reported similar interactions in the case of pentavalent cis-dioxidovanadium(V), VO 2 + , with oxidovanadium(IV), VO 2+ . [3] Similar interactions have been reported for other pentavalent actinide cations such as UO 2 + , PuO 2 + , and AmO 2 + with several other cations.…”