liquid NH3 at 25°C = 0 ppm
All chemical shifts given in ppm!
Source: Bruker Almanac 2012
| Type | chemical shift range |
|---|---|
| primary aliphatic amines | 0 to 60 |
| secondary aliphatic amines | 0 to 90 |
| tertiary aliphatic amines | 10 to 100 |
| prim. aliphatic ammonium ions | 20 to 60 |
| sec. aliphatic ammonium ions | 25 to 80 |
| tert. aliphatic ammonium ions | 30 to 110 |
| amino acids (cation, zwitterion) | 30 to 60 |
| enamines | 40 to 110 |
| anilinium ions | 40 to 60 |
| piperidines, hydroquinolines | 30 to 90 |
| aminophosphines | 60 to 110 |
| guanidines | -N< 30 to 60
=N< 160 to 220 |
| ureas, carbamates, lactames | 60 to 130 |
| primary amides | 110 to 120 |
| secondary amides | 110 to 160 |
| tertiary amides | 95 to 140 |
| thioureas | 90 to 130 |
| thioamides | 135 to 160 |
| Nitramines | NO2 340 to 360
-N< 155 to 200 |
| indoles, pyrroles | 125 to 160 |
| hydrazones | =N- 330 to 340
-N< 150 to 190 |
| triazenes | -N=N-N< 445 to 465
-N=N-N< 355 to 375 -N=N-N< 150 to 175 |
| imides | 170 to 180 |
| nitriles, isonitriles | -C≡N 225 to 240
-N≡C 175 to 210 |
| pyrrole like nitrogens | 160 to 260 |
| Diazo | >=N=N 320 to 445
>=N=N 230 to 310 |
| Diazonium | R3C-N≡N 320 to 345
R3C-N≡N 220 to 230 |
| Pyridines | 230 to 330 |
| pyridine like nitrogen | 245 to 520 |
| imines | 305 to 375 |
| oximes | 360 to 410 |
| azoxy | 325 to 370 |
| nitro | 355 to 395 |
| azo | 505 to 555 |
| nitroso | S-NO to Ar-NO 800 to 930
N-N=O 540 to 570 |
4 Kommentare
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Is there a reference or a book that contains these shifts?
Autor
Hallo,
THIS is a reference! But the table is based on Merck Tables; Bruker Almanac and other sources.
enjoyed this post Steffen’s Wissensblog » 15N chemical shifts and i don’t wish to be that individual… but i do think maybe your website could look a little better if you would have a litte black in it. Only my suggestion, definitely liked this post otherwise =) Best regards, koh samui hotell
Autor
Many thanks for your comment. The problem is to find a good theme with a flexible width for some of my tables.