自旋1/2-自旋1耦合系统的HSQC和HDQC实验的研究

HSQC and HDQC Experiments for Spin 1/2-Spin 1 Coupled Spin System

对自旋1/2-自旋1耦合系统的单量子HSQC和双量子HDQC脉冲序列进行了理论和实验的探讨.研究结果表明,文献提出的HDQC实验中实际上还发生了零量子跃迁,因此该实验应该是多量子HMQC实验.研究结果还表明,HSQC有比HDQC更高的灵敏度.

Pulse sequences for heteronuclear single-quantum coherence（HSQC） and heteronuclear double-quantum coherence（HDQC） experiments for spin 1/2-spin 1 coupled spin systems were evaluated theoretically and experimentally.The results showed that zero-quantum transition occurs in the HDQC experiment.Therefore,this experiment in fact should be an HMQC experiment.The results also showed that HSQC experiment is more sensitive than HDQC experiment.