某些氢键的键能和键长
氢键X—H…Y |
键能/(kJ·mol-1) |
键长/pm |
代表性例子 |
F—H…F |
28.1 |
255 |
(HF)n |
O—H…O |
18.8 |
276 |
冰 |
O—H…O |
25.9 |
266 |
甲醇,乙醇 |
N—H…F |
20.9 |
268 |
NH4F |
N—H…O |
20.9 |
286 |
CH3CONH2 |
N—H…N |
5.4 |
338 |
NH3 |