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}.
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}.