[27.1] amines

Question 1

what are amines?

Answer 1

organic compounds derived from ammonia, NH₃, where one or more H atoms in ammonia have been replaced by a carbon chain or ring

Question 2

describe the 2 types of amines

Answer 2

• aliphatic - N atom is attached to at least one alkyl group (R) eg. CH₃NH₂
• aromatic - N atom is attached to an aromatic ring eg. C₆H₅NH₂

Question 3

describe ammonia and the 3 classifications of amines

Answer 3

• ammonia - N surrounded by 3 Hs and 1 lone pair
• 1ʸ amine - N surrounded by 2 Hs, 1 R group and 1 lone pair
• 2ʸ amine - N surrounded by 1 H, 2 R groups and 1 lone pair
• 3ʸ amine - N surrounded by 3 R groups and 1 lone pair**
• 4ʸ ammonium salts - NOT AMINES - N⁺ surrounded by 4 R groups and a negative ion