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. 2019 Jul 19;4(7):12385–12392. doi: 10.1021/acsomega.9b01566

Table 1. The Eight Methods Adopted for Calculating 11B Isotropic Shielding Constants and the Fitted Empirical Scaling Parameters (Slope and Intercept) in THF.

      SMDc
CPCMd
method geometrya (opt & freq) NMRb (GIAO) slope intercept slope intercept
1 B3LYP/6-31+G(d,p) mPW1PW91/6-311+G(2d,p) –1.0869 106.19 –1.0851 106.02
2 B3LYP/6-311+G(2d,p) mPW1PW91/6-311+G(2d,p) –1.0877 106.40 –1.0867 106.25
3 B3LYP/6-31+G(d,p) PBE0/6-311+G(2d,p) –1.0959 106.32 –1.0941 106.15
4 B3LYP/6-311+G(2d,p) PBE0/6-311+G(2d,p) –1.0967 106.53 –1.0956 106.37
5 M062X/6-31+G(d,p)g mPW1PW91/6-311+G(2d,p) –1.1050 106.67 –1.0903 106.65
5′ M062X/6-31+G(d,p)g mPW1PW91/6-311+G(2d,p) –1.1170e 107.52e –1.1386f 107.76f
6 M062X/6-311+G(2d,p)g mPW1PW91/6-311+G(2d,p) –1.1014 106.94 –1.1003 106.79
7 B3LYP/cc-pVDZ B3LYP/cc-pVDZ –1.0104 110.96 –1.0078 110.79
7′ B3LYP/cc-pVDZ B3LYP/cc-pVDZ –1.0386e 111.96e –1.0442f 111.80f
8 B3LYP/cc-pVTZ B3LYP/cc-pVTZ –1.0824 103.20 –1.0823 103.09
a

The geometry optimization and vibrational frequency calculations were performed with this method.

b

The GIAO calculations24 were performed with this method together with the implicit solvent models in Gaussian 09.

c

The fitted empirical scaling factors (slope and intercept in eq 1) for the chemical shift calculations with the SMD model.32 The linear fitting is shown in Figure 1.

d

The fitted empirical scaling factors (slope and intercept in eq 1) for the chemical shift calculations with the CPCM model.33 The linear fitting is shown in Figure S2 in the Supporting Information.

e

The fitted empirical scaling factors (slope and intercept in eq 1) for the chemical shift calculations with the SMD model included in the optimization step. The linear fitting can be seen in Figure S3 in the Supporting Information.

f

The fitted empirical scaling factors (slope and intercept in eq 1) for the chemical shift calculations with the CPCM model included in the optimization step. The linear fitting can be seen in Figure S3 in the Supporting Information.

g

int=ultrafine was included in all calculations with the M06 functionals.