Illustrated Glossary of Organic Chemistry

Ion-dipole interaction (dipole-ion interaction): A noncovalent attraction between one pole of a bond dipole and an oppositely-charged ion. The δ+ end of the bond dipole is attracted to an anion, and the δ- end of the bond dipole is attracted to a cation.



Generic ion-dipole interactions.
EN X < EN Y
  
Anion-dipole interaction.   
Cation-dipole interaction.