18973-22-3Relevant academic research and scientific papers
The reduction of cobalt(III) by neptunium(V) and the neptunium(V)-chromium(III) complex
Sullivan, James C.,Thompson, Richard C.
, p. 1795 - 1798 (1967)
The rate law for the reaction Np(V) + Co(III) = Np(VI) + Co(II), from 5 to 25° in perchloric acid-lithium perchlorate solutions of constant ionic strength, is -d[Np(V)]/dt = k′[Np(V)] [Co(III)] where k′ = k0e-β[H+]. Under the same co
A kinetic study of the oxidation of formic acid by neptunium(VII) in aqueous perchloric acid solution
Thompson, Mary,Sullivan, James C.
, p. 1707 - 1709 (2007/12/03)
The empirical form of the rate law for the reaction 2NP(VII) + HCOOH = 2Np(VI) + 2H+ + CO2 at constant hydrogen ion concentration is -d[Np(VII)]/dt = k′[Np(VII)] [HCOOH]. At 25° and I = 1.0, k′ = a + b/[H+] where a = 0.4015 M-1 sec-1 and b = 5.38 × 10-2 sec-1. Apparent energies of activation for the respective parameters are 6.44 and 10.5 kcal/mol. There is no solvent deuterium effect on the a parameter but one of 4.2 for b. The respective values of a and b for the reaction with DCOOH (25°, I = 1.0) are 2.64 × 10-2 M-1 sec-1 and 5.10 × 10-3 sec-1 with apparent energies of activation 8.92 and 12.8 kcal/mol. The primary kinetic isotope effects form the basis for the suggestion that the mechanism is similar for the two reaction paths.
