【讨论】这张1H谱的裂分如何分析: L-cysteine 氢谱.

标的Hz数不清楚，上述12个peak的Hz数分别为：
1556.01
1551.9
1550.33
1546.22

1209.16
1203.68
1194.29
1188.62
1172.97
1168.86
1158.1
1153.99

没人回应哦
在具体点
低场的4个信号由CH2两个磁不等价H耦合CH导致
高场八个信号按J分析，左4个和右4个分别对应CH2的其中一个H，裂成4重峰由2J和3J导致
问题是，什么原因导致了CH2上H，1.27：3.1的裂分

研究关注中

As I understand it, In principle since there is a chiral center the
two beta protons must be magnetically and chemically non-equivalent.
From group theory, there is no symmetry operation that can make them
equivalent. In a molecule with no chiral center there will be a
symmetry operation that would make geminal protons equivalent. Hope
this helps.