Skip to main content
. 2019 Sep 18;75(Pt 5):845–854. doi: 10.1107/S2052520619009478

Table 4. Experimental and calculated chemical shifts for H16, H9, H5, H11, H3, C7, C6, C4, C2 and C1 .

a and b are the empirical parameters of equation (5); R 2 is the fitting coefficient. The values of a, b and R2 are derived from linear regression by scaling method.

  Experimental Computed mono Computed dimer Computed solvated
Chloro­form
H16 11.17 8.63 13.44 8.71
H9 8.37 8.55 8.67 8.67
H5 8.35 8.46 8.63 8.60
H11 8.31 8.32 8.49 8.50
H3 8.27 7.73 8.47 8.29
a   0.1353 1.7139 0.0718
b   7.1344 −5.7037 7.9152
R 2   0.2304 0.9998 0.2972
Aceto­nitrile
C7 166.08 166.98 173.13 170.72
C6 151.71 155.72 157.10 154.49
C4 136.52 137.68 137.64 140.03
C2 131.79 135.75 135.75 135.60
C1 124.57 125.56 127.00 128.85
a   0.9954 1.1174 1.0033
b   2.8538 −12.695 3.3344
R2   0.9905 0.9952 0.9982
methanol
C7 166.41 168.51 173.34 173.94
C6 150.76 166.16 157.37 154.33
C4 136.42 148.15 137.25 140.76
C2 130.76 145.96 136.23 135.84
C1 123.36 135.86 127.26 129.26
a   0.7814 1.0843 1.0307
b   42.324 −7.1764 0.9435
R 2   0.9204 0.9882 0.9935
DMSO
C7 175.30 167.20 173.11 173.04
C6 159.53 154.86 157.08 153.95
C4 145.85 138.61 137.62 142.08
C2 140.20 135.24 135.76 135.26
C1 133.25 127.95 127.00 128.48
a   0.9483 1.1097 1.0458
b   1.7562 −21.26 −11.177
R2   0.9936 0.9908 0.9965
DMF
C7 166.59 170.97 175.73 170.56
C6 151.09 155.64 155.85 153.95
C4 137.47 137.29 137.95 142.04
C2 131.51 135.79 136.28 135.32
C1 124.41 127.82 127.80 128.34
a   1.0638 1.1342 0.9909
b   −1.938 −14.579 5.1279
R 2   0.9884 0.9873 0.9987