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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at B3PW91/6-31+G**
 hartrees
Energy at 0K-233.350035
Energy at 298.15K-233.358629
Nuclear repulsion energy217.932596
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 B3PW91/6-31+G**
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 3188 3060 0.00      
2 Ag 3002 2882 0.00      
3 Ag 1765 1694 0.00      
4 Ag 1464 1406 0.00      
5 Ag 1227 1178 0.00      
6 Ag 870 835 0.00      
7 Ag 540 518 0.00      
8 Au 1213 1164 0.00      
9 Au 997 957 0.00      
10 Au 382 367 0.00      
11 B1g 3164 3038 0.00      
12 B1g 1413 1357 0.00      
13 B1g 1359 1304 0.00      
14 B1g 1050 1009 0.00      
15 B1g 577 554 0.00      
16 B1u 3018 2897 34.12      
17 B1u 984 944 34.21      
18 B1u 628 603 80.27      
19 B1u 110 106 1.65      
20 B2g 3019 2899 0.00      
21 B2g 1013 972 0.00      
22 B2g 959 921 0.00      
23 B2g 400 384 0.00      
24 B2u 3186 3059 76.15      
25 B2u 1717 1648 11.72      
26 B2u 1388 1332 0.22      
27 B2u 1179 1132 0.02      
28 B2u 957 918 0.32      
29 B3g 1218 1169 0.00      
30 B3g 720 691 0.00      
31 B3u 3164 3037 18.61      
32 B3u 3003 2883 90.80      
33 B3u 1467 1409 9.29      
34 B3u 1437 1379 0.30      
35 B3u 968 929 0.46      
36 B3u 905 868 13.42      

Unscaled Zero Point Vibrational Energy (zpe) 26822.1 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 25751.9 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 B3PW91/6-31+G**
ABC
0.17247 0.16323 0.08649

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.499 0.000 0.000
C2 -1.499 0.000 0.000
C3 -0.668 1.252 0.000
C4 0.668 1.252 0.000
C5 -0.668 -1.252 0.000
C6 0.668 -1.252 0.000
H7 1.204 -2.200 0.000
H8 -1.204 -2.200 0.000
H9 1.204 2.200 0.000
H10 -1.204 2.200 0.000
H11 2.174 0.000 0.871
H12 -2.174 0.000 0.871
H13 2.174 0.000 -0.871
H14 -2.174 0.000 -0.871

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C12.99722.50221.50202.50221.50202.21923.48442.21923.48441.10193.77411.10193.7741
C22.99721.50202.50221.50202.50223.48442.21923.48442.21923.77411.10193.77411.1019
C32.50221.50201.33632.50302.83743.92613.49242.09841.08893.22502.14273.22502.1427
C41.50202.50221.33632.83742.50303.49243.92611.08892.09842.14273.22502.14273.2250
C52.50221.50202.50302.83741.33632.09841.08893.92613.49243.22502.14273.22502.1427
C61.50202.50222.83742.50301.33631.08892.09843.49243.92612.14273.22502.14273.2250
H72.21923.48443.92613.49242.09841.08892.40784.39915.01492.55674.12362.55674.1236
H83.48442.21923.49243.92611.08892.09842.40785.01494.39914.12362.55674.12362.5567
H92.21923.48442.09841.08893.92613.49244.39915.01492.40782.55674.12362.55674.1236
H103.48442.21921.08892.09843.49243.92615.01494.39912.40784.12362.55674.12362.5567
H111.10193.77413.22502.14273.22502.14272.55674.12362.55674.12364.34741.74174.6833
H123.77411.10192.14273.22502.14273.22504.12362.55674.12362.55674.34744.68331.7417
H131.10193.77413.22502.14273.22502.14272.55674.12362.55674.12361.74174.68334.3474
H143.77411.10192.14273.22502.14273.22504.12362.55674.12362.55674.68331.74174.3474

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 123.566 C1 C4 H9 116.964
C1 C6 C5 123.566 C1 C6 H7 116.964
C2 C3 C4 123.566 C2 C3 H10 116.964
C2 C5 C6 123.566 C2 C5 H8 116.964
C3 C2 C5 112.868 C3 C2 H12 109.801
C3 C2 H14 109.801 C3 C4 H9 119.470
C4 C1 C6 112.868 C4 C1 H11 109.801
C4 C1 H13 109.801 C4 C3 H10 119.470
C5 C2 H12 109.801 C5 C2 H14 109.801
C5 C6 H7 119.470 C6 C1 H11 109.801
C6 C1 H13 109.801 C6 C5 H8 119.470
H11 C1 H13 104.433 H12 C2 H14 104.433
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.635     0.000
2 C -0.635     0.000
3 C 0.005     0.000
4 C 0.005     0.000
5 C 0.005     0.000
6 C 0.005     0.000
7 H 0.142     0.000
8 H 0.142     0.000
9 H 0.142     0.000
10 H 0.142     0.000
11 H 0.171     0.000
12 H 0.171     0.000
13 H 0.171     0.000
14 H 0.171     0.000


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 -33.201 0.000 0.000
y 0.000 -35.806 0.000
z 0.000 0.000 -39.640
Traceless
 xyz
x 4.522 0.000 0.000
y 0.000 0.614 0.000
z 0.000 0.000 -5.136
Polar
3z2-r2-10.272
x2-y22.606
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 12.846 0.000 0.000
y 0.000 9.371 0.000
z 0.000 0.000 7.013


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000