Conformer

EHOMO/eV

ELUMO/eV

E/eV

Δ f H m θ /kJ·mol−1

Conformers-ratio

Reaction equation

CLA

s-trans

1

−8.848

0.361

9.209

−652.06

N 2 : N 1 = 0.52 : 1

(N1% = 65.79 wt%)

Equation (1)

2

−8.821

0.390

9.211

−649.59

s-cis

3

−8.886

0.315

9.201

−625.42

N 3 : N 1 = 6.7 × 10 5 : 1

Conformational isomerization

4

−8.797

0.403

9.200

−646.37

N 4 : N 2 = 0.31 : 1

s-trans

5

−8.848

0.352

9.200

−648.57

N 6 : N 5 = 8.06 : 1

Equation (4)

6

−8.854

0.362

9.216

−654.35

7

−8.844

0.372

9.216

−654.37

N 7 : N 8 = 19.45 : 1

Equation (5)

8

−8.819

0.379

9.198

−646.15

s-cis

9

−8.852

0.454

9.306

−646.39

N 9 : N 3 = 1941 : 1

N 9 : N 5 = 0.46 : 1

Conformational isomerization

(predominant reactants)

10

−8.883

0.435

9.318

−647.80

N 10 : N 4 = 1.68 : 1 N 10 : N 8 = 1.81 : 1

MAC

trans-cycloadducts

11

−10.303

0.272

10.575

−1163.94

without desired product

Equation (2)

12

−10.282

0.275

10.557

−1164.48

13

−10.289

0.278

10.567

−1163.76

without desired product

Equation (3)

14

−10.296

0.264

10.560

−1166.49

cis-cycloadducts

15

−10.228

0.294

10.522

−1162.10

N 16 : N 15 = 2.14 : 1

Equation (8)

(main reaction)

16

−10.303

0.271

10.574

−1164.21

17

−10.270

0.269

10.539

−1164.30

N 18 : N 17 = 1.99 : 1

Equation (9)

(main reaction)

18

−10.316

0.261

10.577

−1166.20