What are the differences between HMQC and HSQC experiments in NMR spectroscopy?

Answer 1

In NMR spectroscopy, HMQC and HSQC experiments are both used to correlate proton and carbon signals in molecules. The main difference between the two experiments lies in the type of nuclei they correlate. HMQC correlates protons with directly bonded carbons, while HSQC correlates protons with directly bonded heteronuclei, such as nitrogen or phosphorus.