Our MD simulations enable us to compare time scales for the onset of hydrogen migrations, C-C bond cleavage and C-H bond cleavage as a function of the internal energy. For E int = 5 eV H-migration to "nearest terminal C-atom" is much faster than migration to the "furthest terminal C-atom". However, it is surprising that for E int > 5 eV the time for both H-migrations is almost the same. Considering a range of internal energies from 1.0 eV to 20 eV, the time-scale for the onset of these migrations range from 420 fs to 10 fs respectively. To explore the appearance of multiple fragmentation pathways originating from the same parent dication, we looked at the structures obtained from our MD simulations. Multiple different structures emerged at the end of our simulation time of upto 1 ps and these were then optimized to locate the nearest minimum energy structure. For most of the dications, formed after loss of one or more neutral particles (H/H 2 ), it is observed that the H-atoms are preferentially attached to the terminal C-atoms and not the central carbon atoms. This is due to cleavage of central C-H bond and/or emission of terminal H-atoms as H/H 2 followed by scrambling which drives the central hydrogen atoms to terminal carbon atoms.