2D NMR

Which NMR experiment is primarily used to determine proton-proton vicinal connectivity in a molecule?

• COSY

• TOCSY

• HSQC

• HMBC

Which NMR experiment is specifically designed to identify long-range proton-carbon connectivity?

• HSQC

• HMBC

• TOCSY

• H2BC

Which NMR experiment is primarily used to determine the connectivity between protons in a spin system

• HMBC

• NOESY

• TOCSY

• COSY

Which NMR experiment is primarily used to determine the connectivity between protons and their directly bonded heteronuclei?

• COSY

• HSQC

• H2BC

• HMBC

Which NMR experiment is used to identify long-range proton-proton connectivity in a molecule?

• COSY

• NOESY

• TOCSY

• HMBC

Which NMR experiment provides information about spatial proximity between protons?

• COSY

• NOESY

• TOCSY

• HSQC

In ¹³C APT (Attached Proton Test, or J-Mod) experiments :

• CH₃ and CH₂ groups are on the same side of the spectrum.

• CH₃ and CH groups are on the same side of the spectrum.

• CH₂ and quaternary carbons ^qC are on the same side of the spectrum.

• Quaternary carbons ^qC are not observed.

In the above COSY spectrum, H₁ is coupled to ?

• H₂

• H₃

• H₄

• H₅