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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-233.331732
Energy at 298.15K-233.340346
Nuclear repulsion energy217.985080
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
(Å4/u)
Dep P Dep U
1 Ag 3187 3049 0.00      
2 Ag 3002 2872 0.00      
3 Ag 1783 1705 0.00      
4 Ag 1492 1427 0.00      
5 Ag 1237 1183 0.00      
6 Ag 873 836 0.00      
7 Ag 541 518 0.00      
8 Au 1224 1171 0.00      
9 Au 1000 957 0.00      
10 Au 382 365 0.00      
11 B1g 3163 3026 0.00      
12 B1g 1423 1361 0.00      
13 B1g 1373 1314 0.00      
14 B1g 1059 1013 0.00      
15 B1g 577 552 0.00      
16 B1u 3017 2887 54.32      
17 B1u 996 953 19.79      
18 B1u 634 606 62.41      
19 B1u 122 117 0.96      
20 B2g 3018 2888 0.00      
21 B2g 1018 974 0.00      
22 B2g 973 931 0.00      
23 B2g 404 387 0.00      
24 B2u 3185 3047 86.03      
25 B2u 1736 1661 6.07      
26 B2u 1402 1341 0.01      
27 B2u 1187 1136 0.01      
28 B2u 962 920 0.08      
29 B3g 1231 1178 0.00      
30 B3g 724 693 0.00      
31 B3u 3163 3026 20.10      
32 B3u 3003 2873 96.69      
33 B3u 1495 1430 4.25      
34 B3u 1452 1389 0.01      
35 B3u 972 930 0.32      
36 B3u 909 870 10.86      

Unscaled Zero Point Vibrational Energy (zpe) 26958.9 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 25791.6 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
0.17254 0.16336 0.08655

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 1.498 0.000 0.000
C2 -1.498 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 1.206 -2.198 0.000
H8 -1.206 -2.198 0.000
H9 1.206 2.198 0.000
H10 -1.206 2.198 0.000
H11 2.174 0.000 0.872
H12 -2.174 0.000 0.872
H13 2.174 0.000 -0.872
H14 -2.174 0.000 -0.872

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C12.99612.50071.50222.50071.50222.21763.48502.21763.48501.10293.77401.10293.7740
C22.99611.50222.50071.50222.50073.48502.21763.48502.21763.77401.10293.77401.1029
C32.50071.50221.33402.50272.83603.92543.49152.09891.08973.22442.14393.22442.1439
C41.50222.50071.33402.83602.50273.49153.92541.08972.09892.14393.22442.14393.2244
C52.50071.50222.50272.83601.33402.09891.08973.92543.49153.22442.14393.22442.1439
C61.50222.50072.83602.50271.33401.08972.09893.49153.92542.14393.22442.14393.2244
H72.21763.48503.92543.49152.09891.08972.41234.39655.01492.55514.12522.55514.1252
H83.48502.21763.49153.92541.08972.09892.41235.01494.39654.12522.55514.12522.5551
H92.21763.48502.09891.08973.92543.49154.39655.01492.41232.55514.12522.55514.1252
H103.48502.21761.08972.09893.49153.92545.01494.39652.41234.12522.55514.12522.5551
H111.10293.77403.22442.14393.22442.14392.55514.12522.55514.12524.34801.74314.6843
H123.77401.10292.14393.22442.14393.22444.12522.55514.12522.55514.34804.68431.7431
H131.10293.77403.22442.14393.22442.14392.55514.12522.55514.12521.74314.68434.3480
H143.77401.10292.14393.22442.14393.22444.12522.55514.12522.55514.68431.74314.3480

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 123.589 C1 C4 H9 116.755
C1 C6 C5 123.589 C1 C6 H7 116.755
C2 C3 C4 123.589 C2 C3 H10 116.755
C2 C5 C6 123.589 C2 C5 H8 116.755
C3 C2 C5 112.822 C3 C2 H12 109.819
C3 C2 H14 109.819 C3 C4 H9 119.656
C4 C1 C6 112.822 C4 C1 H11 109.819
C4 C1 H13 109.819 C4 C3 H10 119.656
C5 C2 H12 109.819 C5 C2 H14 109.819
C5 C6 H7 119.656 C6 C1 H11 109.819
C6 C1 H13 109.819 C6 C5 H8 119.656
H11 C1 H13 104.409 H12 C2 H14 104.409
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 -0.395     0.237
2 C -0.395     0.226
3 C -0.131     -0.219
4 C -0.131     -0.228
5 C -0.131     -0.219
6 C -0.131     -0.228
7 H 0.150     0.112
8 H 0.150     0.110
9 H 0.150     0.112
10 H 0.150     0.110
11 H 0.178     -0.004
12 H 0.178     -0.002
13 H 0.178     -0.004
14 H 0.178     -0.002


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 0.002 0.000 0.000 0.002


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.796 0.000 0.000
y 0.000 -32.791 0.000
z 0.000 0.000 -38.529
Traceless
 xyz
x 0.864 0.000 0.000
y 0.000 3.872 0.000
z 0.000 0.000 -4.736
Polar
3z2-r2-9.471
x2-y2-2.005
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> 144.371
(<r2>)1/2 12.015