The Application of Simple and Easy to Implement Decoupling Pulse Scheme Combinations to Effect Decoupling of Large 𝐽 Values with Reduced Artifacts

Figure 8

The ³¹P NMR spectrum of HP(=O)(OCH₂CH₃)₂ indicates the resultant sidebands with decoupling of ¹H by (a) CPD decoupling using WALTZ and CW (PW, 60 μs; PL, 12.4 dB; 𝜈_1/2, 1.35 Hz; DB, 400 Hz; SDB, 150 Hz); (b) CPD decoupling using WALTZ and CW (PW, 45 μs; PL, 11.4 dB; 𝜈_1/2, 1.37 Hz; DB, 2 kHz; SDB, 1 kHz); (c) CPD decoupling using GARP and CW (PW, 60 μs; PL, 10.6 dB; 𝜈_1/2, 1.41 Hz; DB, 1 kHz; SDB, 400 Hz); (d) CPD decoupling using GARP and CW (PW, 45 μs; PL, 10.9 dB; 𝜈_1/2, 1.55 Hz; DB, 700 Hz; SDB, irrelevant); (e) MPF and CW decoupling (PW, 1 ms; PL, 15.8 dB; 𝜈_1/2, 1.50 Hz; DB, 120 Hz; SDB, irrelevant); (f) APD decoupling using CHIRP and CW (PW, 1 ms; PL, 15.2 dB; 𝜈_1/2, 1.48 Hz; DB, 250 Hz; SDB, irrelevant); and (g) CW decoupling (PL, 5 dB; 𝜈_1/2, 3.85 Hz; DB, ~45 Hz; SDB, irrelevant).