Long-lived Nuclear Spin States in Multiple-Spin Systems
نویسندگان
چکیده
a ) 400 MHz 1H-NMR spectrum at 300 K of citric acid; b) typical singlet state pattern obtained for t = 1 ms; c) singlet state pattern obtained for t = 3.5 s. The sequence, originally written for the AX case, was applied to the citric acid, an AA’BB’ four spin system. The CW decoupling was set to 3.5 kHz while the timing optimized to obtain the maximum population of the singlet state at the time point (2) in the pulse sequence. AA’BB’spin system
منابع مشابه
Long-lived nuclear spin states in the solution NMR of four-spin systems.
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