Table 1 Comparison of the experimental energy \({E}_{\exp }\), the predicted energy Ecalc, the PBE0+MBD DFT relative energy ΔEDFT and the predicted cost function CICC rankings for the aspirin and target XXIII polymorphs identified in the searches

From: Rapid prediction of molecular crystal structures using simple topological and physical descriptors

Polymorph

\({E}_{\exp }\)

\({{{{\rm{vdWFV}}}}}_{\exp }\)

Ecalc

ΔEDFT

vdWFVcalc

CICC

Aspirin rigid search

 Aspirin I

–124.50

28.14

–117.80

0.00

27.37

0.0901

 Aspirin II

–116.60

30.25

–105.00

5.62

32.32

0.1167

 Aspirin IV

–109.90

30.08

–73.00

19.69

28.36

0.1364

Aspirin flexible search

 Aspirin I

–124.50

28.14

–116.80

0.00

26.78

0.0655

 Aspirin II

–116.60

30.25

–109.10

3.75

33.19

0.1137

 Aspirin IV

–109.90

30.08

–94.00

20.08

28.06

0.1535

ROY flexible search

 ON

–166.30

24.01

–151.90

15.19

27.82

0.0491

 ON*

–157.22

24.01

–130.40

15.56

33.76

0.0549

 ON*

–157.22

24.01

–133.20

15.44

33.53

0.0497

 OP

–160.10

23.52

–137.10

9.60

33.04

0.0478

 ORP

–154.70

30.73

–148.40

0.00

28.24

0.0397

 PO13

–164.50

28.20

–152.10

22.12

28.43

0.0433

 PO13*

–160.60

28.20

–138.40

22.24

28.98

0.0557

 R

–156.70

30.28

–129.60

20.30

28.65

0.0884

 Y

–173.80

23.67

–151.90

2.06

28.28

0.0476

 Y19

–161.10

29.77

–155.30

23.34

28.03

0.0503

 Y19*

–161.10

29.77

–131.90

24.07

33.55

0.0617

 YN

–147.00

32.01

–127.10

9.12

34.41

0.0398

 YT04

–158.90

28.97

–151.30

6.56

27.85

0.0417

 YT04*

–158.90

28.97

–119.80

7.41

33.86

0.0638

 X1

− 

− 

–132.80

4.01

34.44

0.0506

 X2

− 

− 

–131.00

26.62

33.43

0.0543

 X3

− 

− 

–128.00

3.37

34.07

0.0535

 X4

− 

− 

–124.40

30.79

34.37

0.0420

 X5

− 

− 

–113.90

20.06

34.50

0.0684

Target XXIII flexible search

 Polymorph I

–191.9

34.83

–184.80

0.00

31.27

0.1179

 Polymorph II

–211.9

32.96

–176.60

42.53

31.25

0.0745

 Polymorph III

–212.9

32.50

–173.90

4.71

37.85

0.1051

 Polymorph IV

–201.0

35.50

–176.60

10.23

37.80

0.1344

 Polymorph V

–197.9

34.58

–187.90

102.91

31.46

0.1017

  1. The experimental vs the predicted van der Waals free volumes (vdWFV) are also presented for reference.