Draw up coherence transfer pathways for the following experiments, and explain how gradients could be used to
Question:
(a) P-type DQF COSY (i.e. p = -1 during t1) (absolute value display).
(b) N-type triple-quantum filtered COSY (i.e. p = +1 during t1) (absolute value display).
(c) N-type COSY (absolute value display).
(d) Double-quantum spectroscopy, intended to give an absorption mode spectrum (i.e. refocusing phase errors due to gradients, and recording separate P- and N-type spectra).
(e) N-type HSQC (absolute value display) for 1H-13C correlation.
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a Ptype DQF COSY We have chosen p 2 in the interval between the last two pulses but it would have been just as acceptable to choose p 2 The pathway wi...View the full answer
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