[求助]请教文献中核磁d of vt是什么类型的峰啊？

Ronally

谢谢

fangjing

没见过

Ronally

1H NMR (THF-d8, 400 MHz): δ 7.29 (dd, J = 8 Hz, 1H), 7.03 (d, J = 8 Hz, 2H), 3.37 (vt, J = 5 Hz, 4H), 1.85 (m, 4H), 1.12 (d of vt, 3JHH = 7 Hz, 3JPH = 7 Hz, 12H), 1.04 (d of vt, 3JHH = 7 Hz, 3JPH = 7 Hz, 12H), ?11.03 (dt, 2JHH = 5 Hz, 2JPH = 17 Hz, 2H), ?21.17 (tt, 2JHH = 5 Hz, 2JPH = 15 Hz, 1H);

4 r. N; c( p* [( |& y& n% u

 

文中说vt是virtual triple，不知道是什么意思？请高手指点迷津

louluv

应该是pseudo-dt峰吧，峰形看起来像是dt峰。