Hydrogen bonding of the naphthalene radical cation to water and methanol and attachment of the naphthalene ion to extended hydrogen bonding chains

- Unconventional ionic hydrogen bonding between naphthalene ion and water or methanol.
- Binding energies of water and methanol to the naphthalene cation (8 kcal/mol).
- Externally solvated large PAH ions by water and methanol clusters.