$\underset{\begin{smallmatrix}
EAN=37 \\
(Less\,stable)
\end{smallmatrix}}{\mathop{[Mn{{(CO)}_{6}}]}}\,\xrightarrow{-{{e}^{-}}}\underset{\begin{smallmatrix}
EAN=36 \\
(More\,stable)
\end{smallmatrix}}{\mathop{{{[Mn{{(CO)}_{6}}]}^{+}}}}\,$