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The complex [Mn,(p-O),(p-O,CMe)L,] [CIO,],-H,O 1 {L = methyl[2-(2-pyridyl)ethyl] (2-pyridyl-methy1)amine) has been synthesised and isolated in the solid state. In MeCN solution complex 1 exhibits absorption spectral features characteristic of the [ Mn,(p-O),(p-O2CMe)I2+ core. Variable-temperature (1 9.8-300 K) solid-state magnetic susceptibility data are consistent with a doublet ground state with J = -144 cm-l. The X-band EPR spectrum at 77 K exhibits a sixteen-line pattern centred at g = 2. This spectrum is attributed to the overlap of hyperfine splitting of two chemically distinct manganese nuclei (/ = $) with one hyperfine coupling constant being roughly twice the magnitude of the other. Cyclic voltammetry of 1 shows a quasi-reversible one-electron oxidation [€; = +1 .O V vs. saturated calomel electrode (SCE)] to the MnIV, species a s well a s an irreversible one-electron reduction (€,,= = -0.10 V vs. SCE) to the Mnl'l, species. Coulometric or perchloric acid oxidation generates the orange MnIV, species. The redox stability and the absorption spectral properties of this oxidised species have been investigated.

Theoretical nuclear reaction codes are crucial for studying cross-section and S-factors of nuclear reactions required for the thermonuclear reaction rate calculations. We analyze two reactions 8Li([Formula: see text])[Formula: see text]B and [Formula: see text]N([Formula: see text])[Formula: see text]O, using both TALYS and EMPIRE codes. We stress that these reactions are highly important for CNO cycle but the extent of involvement of experimental datasets are meager and conflicting. For the first reaction, the trend of experimental data has been predicted satisfactorily by the codes. The reaction rate is also matched with REACLIB calculation. However, in [Formula: see text]N([Formula: see text])[Formula: see text]O, none of the codes could predict the resonant structures in the experimental data at the lower energies. The importance of our work is a sincere attempt to validate the TALYS and EMPIRE predictions for cross-section, S-factor and the reaction rate, simultaneously.