Since C$_{\text{s}}$ is unlikely to exhibit a low activation energy for migration the focus is on C$_{\text{i}}$.
Pathways starting from the next most favored configuration, i.e. \cs{} located at position 2, into configuration a and b are investigated, which show activation energies above \unit[2.2]{eV} and \unit[2.5]{eV}.
The respective barriers and structures are shown in Fig.~\ref{fig:051-xxx}.
+Again, the non-magnetic configuration is obtained.
+If not forced by the CRT algorithm, the structures beyond \perc{50} displacement of the transition into configuration a would likewise settle into configuration b.
\begin{figure}[tp]
\begin{center}
\includegraphics[width=0.7\textwidth]{comb_mig_051-xxx_conf.ps}