TY - JOUR A2 - Jackowski, Karol AU - Klika, Karel D. PY - 2014 DA - 2014/04/29 TI - The Application of Simple and Easy to Implement Decoupling Pulse Scheme Combinations to Effect Decoupling of Large Values with Reduced Artifacts SP - 289638 VL - 2014 AB - Of the various problems in decoupling one nucleus type from another using standard decoupling pulse schemes for broadband decoupling, a particular challenge is to effect full, artifact-free decoupling when the size of the coupling constant is very large. Herein it is demonstrated that 1H decoupling of the 31P NMR spectrum of diethyl phosphonate {HP(=O)(OCH2CH3)2} can be accomplished with reduced artifacts despite the large JH,P1 value of 693 Hz by using a combination of decoupling pulse schemes involving continuous-wave (CW) irradiation and either adiabatic-pulse decoupling (APD), MPF decoupling, or traditional composite-pulse decoupling (CPD) schemes such as WALTZ or GARP. The considered strategy is simple, efficient, and easy to implement on most instruments. The best result was attained for a combination of CW and CPD using GARP with a standard pulse width of 60 μs. Altogether, the advantages of the methodology include low power requirements, complete decoupling, tolerance of a range of large J values, large bandwidth for normal-sized J values, and the suppression of sidebands. SN - 1687-9449 UR - https://doi.org/10.1155/2014/289638 DO - 10.1155/2014/289638 JF - International Journal of Spectroscopy PB - Hindawi Publishing Corporation KW - ER -