Table 2.
Chemical shift values of butyl substituted dimeric salt in various deuterated solvents at 25°C.
| S. No | d-Solvent | Compound | δ H2 | δ H4 | δ H5 | |
|---|---|---|---|---|---|---|
| 1
|
TFA-d1 |
Br− | 2e | 8.58 | 7.75 | 7.32 |
| BF4− | 2f | 8.63 | 7.73 | 7.30 | ||
| PF6− | 2g | 8.68 | 7.74 | 7.34 | ||
| CF3SO3− |
2h |
8.70
|
7.70
|
7.31
|
||
| 2
|
HOAc-d4 |
Br− | 2e | 8.74 | 7.74 | 7.29 |
| BF4− | 2f | 8.81 | 7.77 | 7.30 | ||
| PF6− | 2g | 8.79 | 7.80 | 7.33 | ||
| CF3SO3− |
2h |
8.84
|
7.82
|
7.39
|
||
| 3
|
MeOH-d4 |
Br− | 2e | 9.09 | 7.65 | 7.54 |
| BF4− | 2f | 9.11 | 7.66 | 7.62 | ||
| PF6− | 2g | 9.15 | 7.65 | 7.60 | ||
| CF3SO3− |
2h |
9.19
|
7.69
|
7.62
|
||
| 4
|
DMSO-d6 |
Br− | 2e | 9.35 | 7.79 | 7.53 |
| BF4− | 2f | 9.44 | 7.82 | 7.77 | ||
| PF6− | 2g | 9.49 | 7.81 | 7.78 | ||
| CF3SO3− |
2h |
9.54
|
7.85
|
7.79
|
||
| 5
|
DMF-d7 |
Br− | 2e | 9.62 | 8.01 | 7.95 |
| BF4− | 2f | 9.69 | 8.03 | 7.97 | ||
| PF6− | 2g | 9.77 | 8.06 | 7.98 | ||
| CF3SO3− |
2h |
9.98
|
8.09
|
8.02
|
||
| 6
|
CD3CN
|
Compound 2(e-h) are insoluble | ||||
| 7
|
Acetone-d6 |
|||||
| 8 | CDCl3 | |||||