SEARCH Articles Figures Tables Azines—continued Azines—continued substitution BONDS TO HYDROGEN Bonding continued) Bonds - continued Bonds to Nitrogen Hydrogen bonding (continued Hydrogen bonding nucleophilic substitution Hydrogen bonding substitution Hydrogen continued Hydrogen nitrogen Hydrogen nucleophiles Hydrogen substitution Hydrogen-bonding to azine-nitrogen Nitrogen Substitution Nitrogen hydrogen bonded Nitrogen nucleophile Nitrogen nucleophiles Nitrogen nucleophilic substitution Nitrogen, hydrogenation Nitrogen, substitutional Nitrogen—hydrogen bonds Nucleophilic substitution—continued Nucleophilicity nitrogen nucleophiles