Table 5 The NBO natural charge for non protonated compounds in gas phase.

From: A multiscale computational investigation for protection of carbon steel surface by pyrazolo-pyrimidine derivatives

Atoms

Compound 1

Compound 2

Compound 3

C1

0.304

0.305

0.303

N2

− 0.577

− 0.522

− 0.578

C3

0.613

0.415

0.613

C4

− 0.232

− 0.232

− 0.232

C5

0.415

0.614

0.414

N6

− 0.520

− 0.576

− 0.522

O7

-0.532

C8

− 0.028

O8

− 0.533

− 0.533

C9

− 0.031

− 0.030

C10

C11

− 0.494

C12

− 0.512

− 0.501

C14

0.670

C15

0.806

0.815

− 0.629

N16

− 0.802

O16

− 0.599

− 0.610

O17

− 0.685

− 0.562

N18

− 0.228

C19

0.215

0.216

N19

− 0.228

C20

− 0.600

− 0.600

0.216

C21

− 0.601

C23

C24

N24

− 0.278

− 0.280

C25

0.159

N25

− 0.228

− 0.279

C26

0.158

− 0.226

0.158

C27

− 0.223

− 0.214

− 0.225

C28

− 0.212

− 0.188

− 0.213

C29

− 0.189

− 0.189

C30

− 0.190

C31

− 0.190

− 0.225

C32

− 0.215

C33

− 0.213

− 0.213

C36

− 0.036

C39

− 0.601