For the bond-length relaxed PES (Fig. and Fig. ), the complement of dissociation processes that occur as configurations approach the symmetric linear SL-4 "fusion" points is idiosyncratic for this chemical system. Approaching the two symmetric linear SL-4-4 configurations, and at this level of calculation, the chloro(fluoro)iodosilane system evolves to 3b comprised of a single collinear [I-H⋯Si + -F⋯Cl -] unit. An analogous scenario occurs approaching symmetric linear SL-4-2 where the system evolves to 3d comprising a single collinear [I -⋯Cl-Si + ⋯H-F] unit. A different scenario occurs approaching the symmetric linear SL-4-3 species where the system evolves to 3c comprised of two collinear fragments [I -⋯F-Si + ] + [H-Cl] at infinite distance.