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All results from a given calculation for C6H8 (1,4-Cyclohexadiene)

using model chemistry: B3PW91/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at B3PW91/6-31G**
 hartrees
Energy at 0K-233.343132
Energy at 298.15K-233.351752
Nuclear repulsion energy218.060867
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3PW91/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 3186 3053 0.00      
2 Ag 3001 2876 0.00      
3 Ag 1779 1705 0.00      
4 Ag 1471 1410 0.00      
5 Ag 1230 1179 0.00      
6 Ag 872 836 0.00      
7 Ag 540 518 0.00      
8 Au 1215 1164 0.00      
9 Au 1000 958 0.00      
10 Au 382 366 0.00      
11 B1g 3162 3030 0.00      
12 B1g 1416 1357 0.00      
13 B1g 1362 1305 0.00      
14 B1g 1052 1009 0.00      
15 B1g 577 553 0.00      
16 B1u 3018 2893 51.33      
17 B1u 988 947 19.89      
18 B1u 631 605 59.60      
19 B1u 121 116 1.02      
20 B2g 3019 2894 0.00      
21 B2g 1016 974 0.00      
22 B2g 966 926 0.00      
23 B2g 404 387 0.00      
24 B2u 3184 3051 79.78      
25 B2u 1732 1660 6.23      
26 B2u 1391 1333 0.03      
27 B2u 1180 1131 0.02      
28 B2u 959 919 0.07      
29 B3g 1221 1170 0.00      
30 B3g 724 694 0.00      
31 B3u 3162 3030 17.13      
32 B3u 3002 2877 93.93      
33 B3u 1474 1413 4.60      
34 B3u 1442 1382 0.05      
35 B3u 970 929 0.37      
36 B3u 907 869 11.32      

Unscaled Zero Point Vibrational Energy (zpe) 26878.0 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 25759.8 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3PW91/6-31G**
ABC
0.17259 0.16352 0.08660

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.497 0.000 0.000
C2 -1.497 0.000 0.000
C3 -0.667 1.251 0.000
C4 0.667 1.251 0.000
C5 -0.667 -1.251 0.000
C6 0.667 -1.251 0.000
H7 1.205 -2.198 0.000
H8 -1.205 -2.198 0.000
H9 1.205 2.198 0.000
H10 -1.205 2.198 0.000
H11 2.173 0.000 0.871
H12 -2.173 0.000 0.871
H13 2.173 0.000 -0.871
H14 -2.173 0.000 -0.871

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C12.99452.49981.50172.49981.50172.21743.48322.21743.48321.10213.77201.10213.7720
C22.99451.50172.49981.50172.49983.48322.21743.48322.21743.77201.10213.77201.1021
C32.49981.50171.33382.50242.83573.92443.49092.09761.08903.22302.14283.22302.1428
C41.50172.49981.33382.83572.50243.49093.92441.08902.09762.14283.22302.14283.2230
C52.49981.50172.50242.83571.33382.09761.08903.92443.49093.22302.14283.22302.1428
C61.50172.49982.83572.50241.33381.08902.09763.49093.92442.14283.22302.14283.2230
H72.21743.48323.92443.49092.09761.08902.40974.39615.01322.55474.12292.55474.1229
H83.48322.21743.49093.92441.08902.09762.40975.01324.39614.12292.55474.12292.5547
H92.21743.48322.09761.08903.92443.49094.39615.01322.40972.55474.12292.55474.1229
H103.48322.21741.08902.09763.49093.92445.01324.39612.40974.12292.55474.12292.5547
H111.10213.77203.22302.14283.22302.14282.55474.12292.55474.12294.34571.74144.6816
H123.77201.10212.14283.22302.14283.22304.12292.55474.12292.55474.34574.68161.7414
H131.10213.77203.22302.14283.22302.14282.55474.12292.55474.12291.74144.68164.3457
H143.77201.10212.14283.22302.14283.22304.12292.55474.12292.55474.68161.74144.3457

picture of 1,4-Cyclohexadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 C3 123.570 C1 C4 H9 116.825
C1 C6 C5 123.570 C1 C6 H7 116.825
C2 C3 C4 123.570 C2 C3 H10 116.825
C2 C5 C6 123.570 C2 C5 H8 116.825
C3 C2 C5 112.859 C3 C2 H12 109.815
C3 C2 H14 109.815 C3 C4 H9 119.604
C4 C1 C6 112.859 C4 C1 H11 109.815
C4 C1 H13 109.815 C4 C3 H10 119.604
C5 C2 H12 109.815 C5 C2 H14 109.815
C5 C6 H7 119.604 C6 C1 H11 109.815
C6 C1 H13 109.815 C6 C5 H8 119.604
H11 C1 H13 104.383 H12 C2 H14 104.383
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.300      
2 C -0.300      
3 C -0.100      
4 C -0.100      
5 C -0.100      
6 C -0.100      
7 H 0.110      
8 H 0.110      
9 H 0.110      
10 H 0.110      
11 H 0.141      
12 H 0.141      
13 H 0.141      
14 H 0.141      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.846 0.000 0.000
y 0.000 -32.771 0.000
z 0.000 0.000 -38.507
Traceless
 xyz
x 0.793 0.000 0.000
y 0.000 3.906 0.000
z 0.000 0.000 -4.699
Polar
3z2-r2-9.398
x2-y2-2.075
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 144.256
(<r2>)1/2 12.011