Intracluster reactions in negatively charged aggregates of diquaternary amines - Gemini surfactants with bromide and formate counterions

- Anionic clusters of gemini surfactants with formate or bromide anions made by ESI.
- Homogeneous and mixed anion clusters are present.
- Collision initiates elimination or substitution reactions inside the cluster.
- Anions are mobile inside the cluster.
- Mixed cluster reaction products are a sum of reactions of individual anions.