medium intensity bands at approximately 3300 cm⁻¹ and 3150 cm⁻¹ for N-H bond stretching (primary amine), a strong and sharp band at 3333-3267 cm⁻¹ for C-H bond stretching (alkyne), a weak to medium intensity band at 2260-2190 cm⁻¹ for C≡C bond stretching (alkyne), and a medium intensity band at 3000-2840 cm⁻¹ for C-H bond stretching (alkane)

medium intensity bands at 3650 cm⁻¹ and 3200 cm⁻¹ for N-H bond stretching (primary amine) , a weak band at 3333-3267 cm⁻¹ for C-H bond stretching (alkyne), a weak to medium intensity band at 3300-2700 cm⁻¹ for C≡C bond stretching (alkyne), and a medium intensity band at 3000-2840 cm⁻¹ for C-H bond stretching (alkane)

weak intensity bands at 3650 cm⁻¹ and 3200 cm⁻¹ for N-H bond stretching (primary amine), a weak band at 3333-3267 cm⁻¹ for C-H bond stretching (alkyne) , a strong intensity band at 2260-2100 cm⁻¹ for C≡C bond stretching (alkyne), and a medium intensity band at 3000-2840 cm⁻¹ for C-H bond stretching (alkane)

strong intensity band at 3500-3300 cm⁻¹ for N-H bond stretching (secondary amine), a weak band at 3333-3267 cm⁻¹ for C-H bond stretching (alkyne), a weak intensity band at 2260-2100 cm⁻¹ for C≡C bond stretching (alkyne), and a strong intensity band at 3000-2840 cm⁻¹ for C-H bond stretching (alkane)