Unimolecular dissociation characteristics of cationic complexes between nicotinic acid and Cu(II) and Ni(II)

- We have formed and characterized ML(L−H)+ complexes.
- We find preference for metal coordination by the carboxylate group.
- Collisionally induced dissociation gives CO2 loss as the primary product.
- The dissociation patterns are consistent with the known chemistry of Cu2+ and Ni2+.