“On the interference of J(HH) modulation in HSQMBC-IPAP and HMBC-IPAP experiments”, by Josep Saurí and Teodor Parella; Magn. Reson. Chem. 2013. DOI: 10.1002/mrc.3977

The effects of phase signal modulation due to homonuclear proton–proton coupling constants in HSQMBC-IPAP and HMBC-IPAP experiments are experimentally evaluated. An assessment of the reliability ofⁿJ_CH measurement from distorted cross-peaks obtained in IPAP versions of HMBC and HSQMBC experiments is presented. Finally, it is shown that HMBC-COSY experiments could be an excellent complement to HMBC for the measurement of small ⁿJ_CH values.

Pulse Program Code for Bruker:

• HMBC/HMBC-CO IPAP
• HSQMBC/HSQMBC-CO IPAP

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