HMOC (904 (a→b)1z→-y 2hsiSz g T=1/2J (90)Sx 21xSz +2lxSz-2lxSy 12 (b→c) 21Sycos hcosh Decoupling (24)Sz 2lxSxcos nitisin st -2lySysin itcos st The 180 pulse of I-spin in the middle of t refocuses +2lySxsin itisin st the /-spin chemical shift.As a result,magnetization (9075x transfer from points a to d is as follows: (c→d) 2lxSxcos nitisin st (1801x 2lySxsin it sin st -2lxSzcos nt cos nst (b→c) -2lx(Sycos st -Sxsin sh) (Qsh)Sz -2lySzsin niticos sti (90S (c →d) >-2lxSzcos nst 2lxSxsin Dst 21glt →2 IxSxcos2t1sin2st1 2JilSz (r=1/21s) -lycos st 2lxSxsin sti [6b] (r=1/2Js 2lySxsin itisin st-lycos ifcos st Ixsin ificos st [6a] HMQC和HSQC谱图 看起来非常类似HMQC HMQC和HSQC谱图 看起来非常类似