Table 1 Selected geometric bond lengths, bond angles, and, dihedral angles of the optimized 3 and 5 compounds using B3LYP/6-311G**.

From: Experimental and theoretical studies of linear and non-linear optical properties of novel fused-triazine derivatives for advanced technological applications

Compound

Bond lengths (Å)

Bond angles

Dihedral angles

3

C6-C7

1.4176

N3-C2-N5

126.140

S1-C2-N5-C7

179.104

N4-C6

1.3444

C2-N2-N3

30.623

S1-C2-N3-N4

− 178.893

N5-C7

1.3382

N3-N4-C6

119.970

C2-N3-N4-C6

− 0.206

C2-N3

1.3509

N4-C6-C7

120.217

N3-N4-C6-C7

− 0.223

C2-N5

1.3323

C6-C7-N5

119.688

N4-C6-C7-N5

0.410

C2-S1

1.7715

N3-C2-S1

118.954

C6-C7-N5-C2

− 0.143

S1-C58

1.8389

C2-S1-C58

39.573

S1-C56-C57-C58

− 178.012

C55-S46

1.8414

C42-S46-C55

102.091

C55-S46-C42-N43

− 0.840

C42-S46

1.7687

S46-C42-N43

118.573

S46-C42-N43-N44

179.894

C42-N43

1.3521

N43-C42-N45

126.223

C42-N43-N44-C36

− 0.032

C42-N45

1.3327

C42-N45-C35

115.979

N43-N44-C36-C35

0.116

C35-N45

1.3380

N45-C35-C36

119.700

N44-C36-C35-N45

− 0.066

C36-N44

1.3446

C35-C36-N44

120.240

C36-C35-N45-C42

− 0.066

5

C19-N25

1.3594

N24-N25-C19

117.858

N24-N25-C19-N26

− 0.067

C19-N26

1.3268

C7-N24-N25

120.041

C7-N24-N25-C19

0.017

N24-N25

1.3109

C7-C8-N26

119.669

C7-C8-N26-C19

0.061

C7-N25

1.3517

C7-C8-C5

120.291

C7-C8-C5-C2

− 0.168

C19-S27

1.7699

C28-C32-C31

120.705

C28-C32-C31-C33

179.867

S27-C28

1.8517

C32-C31-C33

120.692

C32-C31-C33-C36

0.092

S67-C68

1.8561

C41-N65-N64

118.010

C41-N65-N64-C43

− 0.097

S67-C41

1.7710

N65-N64-C43

119.972

N65-N64-C43-C42

0.080

C41-N65

1.3503

N64-C43-C42

120.197

N64-C43-C42-N66

0.019

C41-N66

1.3324

C43-C42-N66

119.666

C43-C42-N66-C41

− 0.092