“…For the higher hydrocarbon ions reliable data are more difficult to obtain due to the problems discussed previously. However, a concerted attempt has been made and measurements on the whole propane family have been reported; C 3 H þ n (n ¼ 1-8 (Angelova et al, 2004), n ¼ 7 (Ehlerding et al, 2003;Larsson et al, 2004b)), and for the butane family; C 4 H þ n (n ¼ 1-9 (Angelova et al, 2004a), n ¼ 2 (Dannielsson et al, 2008), n ¼ 5 (Mitchell et al, 2003), and n ¼ 9 (Mitchell et al, 2003;Larsson et al, 2005)) and, finally, for a range of bare carbon clusters, C þ m for m ¼ 3-6 (Heber et al, 2006). Due to the increasing complexity of the systems involved, only the degree of C-C fragmentation was considered, that is, channels which involve the cleavage of one or multiple C-H bonds are not explicitly stated in the following equations for the available reaction channels.…”