Fig. 4.

Breakdown curve for the dissociation of decamethonium bromide (M2+·Br−) + (•) at 229 °C. The major fragment arises from loss of CH3Br ((▴), Scheme 1, species III). Minor fragments arising from loss of trimethylamine (○, species II) and subsequent dissociation of species III to species IV (▵) are also seen.