Characterizing Intermolecular Multiple-Quantum Coherence Signals Between Spin-1/2 and Spin-3/2 Nuclei

Wen Zhang¹, Shuhui Cai¹, Zhong Chen¹

The intermolecular multiple-quantum coherence (iMQC) signals between ¹H (spin-1/2) and ²³Na (spin-3/2) nuclei were studied theoretically and experimentally using the CRAZED pulse sequence. The results show that no matter which spin is detected, the dependences of the iMQC signal intensities on the RF pulse flip angles follow the same rules and are identical to those for other heteronuclear systems, implying that heteronuclear iMQCs have same properties in liquid NMR.