Table 4 List of promoters for the increase and decrease of logH50, along with their correlation weights in runs 1–4, the frequency of each attribute in each set, and examples of interpretative attributes.

From: Construction of reliable QSPR models for predicting the impact sensitivity of nitroenergetic compounds using correlation weights of the fragments of molecular structures

Split no.

SAk

CWs run 1

CWs run 2

CWs run 3

N1AT

N2PT

N3Cal

Defect

Comments

 

Increasing descriptors

      

1

(F.Cl).Y.Y.

7.598

6.060

10.894

105

110

101

0

Presence of fluorine with chlorine

2

4.185

7.722

10.343

111

104

100

0

3

7.341

7.850

6.977

110

105

98

0

4

6.925

7.650

5.404

107

106

100

0

1

NOSP11000000

9.985

10.172

8.009

105

110

101

0

2

0.726

1.971

2.108

111

104

99

0.0001

presence of nitrogen, oxygen, and absence of sulfur, and phosphorus

3

10.971

12.912

11.083

110

104

98

0.0001

4

2.776

0.340

0.009

107

106

99

0.0001

1

[xyzyx0]….

1.102

1.550

2.647

66

65

53

0.0011

2

1.137

1.745

1.806

58

58

64

0.0013

The absence of symmetry xyzyx

3

1.108

1.098

0.393

68

53

53

0.0013

4

2.029

1.558

1.810

57

59

57

0.0004

1

c…1…….

0.184

1.104

1.257

55

53

54

0.0007

Presence of aromatic carbon with or without branching

2

c…c…(…

1.325

1.441

1.194

50

39

34

0.0018

3

c……….

0.740

0.823

0.187

58

61

50

0.0008

3

1…c…(…

0.927

0.666

1.066

51

53

44

0.0008

4

c…(…….

0.717

0.857

0.285

56

55

57

0.0006

 

Decreasing descriptors

      

1

=…(…….

-0.123

-0.198

-0.031

105

110

101

0

Presence of double bond with branching

2

-0.009

-0.357

-0.211

111

104

99

0.0001

3

-0.945

-0.215

-0.473

110

104

98

0.0001

1

=……….

-0.211

-0.412

-0.624

105

110

101

0

Presence of double bond

2

-0.011

-0.061

-0.542

111

104

99

0.0001

4

-0.095

-0.463

-0.562

107

106

99

0.0001

1

=…O…(…

-0.572

-0.164

-0.108

105

109

101

0.0001

Presence of double bond and oxygen with branching

2

-0.182

-0.324

-0.538

110

104

99

0.0001

2

O…=…(…

-0.400

-0.353

-0.622

110

104

99

0.0001

Presence of oxygen and double bond with branching

4

-0.234

-0.268

-0.215

107

106

98

0.0001

2

O…=…….

-0.391

-0.029

-0.616

110

104

99

0.0001

Presence of oxygen with double bond

3

-0.125

-0.494

-0.515

110

103

98

0.0001

4

-0.386

-0.531

-0.419

107

106

98

0.0001

1

NNC-O…101.

-0.676

-0.197

-0.309

105

110

101

0

The Nearest Neighbor Codes for Oxygen (NNC-O) equal to 101

2

-0.713

-0.322

-0.966

111

104

100

0

3

-0.510

-0.736

-0.178

110

105

98

0

4

-0.466

-0.318

-0.470

107

106

100

0

1

PT2-O…2…

-0.403

-0.275

-0.763

105

110

101

0

The presence of the path of length 2 equal to 2 for oxygen atom

2

-0.498

-0.244

-0.365

111

104

100

0

3

-0.445

-0.179

-0.368

110

105

98

0

4

-0.253

-0.149

-0.325

107

106

100

0

  1. 1 No. of attributes in the active training set.
  2. 2 No. of attributes in the passive training set.
  3. 3 No. of attributes in the calibration set.