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

using model chemistry: B3LYP/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at B3LYP/CEP-121G
 hartrees
Energy at 0K-38.624208
Energy at 298.15K-38.632856
Nuclear repulsion energy113.362811
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 B3LYP/CEP-121G
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 3138 3058 0.00      
2 Ag 2948 2872 0.00      
3 Ag 1721 1677 0.00      
4 Ag 1501 1463 0.00      
5 Ag 1230 1198 0.00      
6 Ag 842 820 0.00      
7 Ag 539 525 0.00      
8 Au 1214 1183 0.00      
9 Au 1004 978 0.00      
10 Au 375 365 0.00      
11 B1g 3104 3025 0.00      
12 B1g 1396 1361 0.00      
13 B1g 1373 1338 0.00      
14 B1g 1060 1033 0.00      
15 B1g 574 559 0.00      
16 B1u 2966 2891 85.63      
17 B1u 1002 976 29.72      
18 B1u 648 631 86.36      
19 B1u 113 110 1.46      
20 B2g 2967 2892 0.00      
21 B2g 1031 1005 0.00      
22 B2g 975 950 0.00      
23 B2g 402 392 0.00      
24 B2u 3133 3053 136.44      
25 B2u 1678 1636 8.13      
26 B2u 1383 1348 0.39      
27 B2u 1186 1156 0.05      
28 B2u 941 917 1.06      
29 B3g 1220 1189 0.00      
30 B3g 729 711 0.00      
31 B3u 3105 3026 30.83      
32 B3u 2949 2873 134.24      
33 B3u 1506 1467 8.08      
34 B3u 1433 1397 0.04      
35 B3u 967 943 0.66      
36 B3u 885 863 12.55      

Unscaled Zero Point Vibrational Energy (zpe) 26618.1 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 25939.3 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 B3LYP/CEP-121G
ABC
0.16785 0.15908 0.08420

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.520 0.000 0.000
C2 -1.520 0.000 0.000
C3 -0.677 1.271 0.000
C4 0.677 1.271 0.000
C5 -0.677 -1.271 0.000
C6 0.677 -1.271 0.000
H7 1.218 -2.219 0.000
H8 -1.218 -2.219 0.000
H9 1.218 2.219 0.000
H10 -1.218 2.219 0.000
H11 2.194 0.000 0.876
H12 -2.194 0.000 0.876
H13 2.194 0.000 -0.876
H14 -2.194 0.000 -0.876

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C13.04102.53851.52512.53851.52512.23933.52442.23933.52441.10473.81641.10473.8164
C23.04101.52512.53851.52512.53853.52442.23933.52442.23933.81641.10473.81641.1047
C32.53851.52511.35422.54132.87953.97073.53102.11891.09153.25962.16393.25962.1639
C41.52512.53851.35422.87952.54133.53103.97071.09152.11892.16393.25962.16393.2596
C52.53851.52512.54132.87951.35422.11891.09153.97073.53103.25962.16393.25962.1639
C61.52512.53852.87952.54131.35421.09152.11893.53103.97072.16393.25962.16393.2596
H72.23933.52443.97073.53102.11891.09152.43584.43755.06202.57734.16312.57734.1631
H83.52442.23933.53103.97071.09152.11892.43585.06204.43754.16312.57734.16312.5773
H92.23933.52442.11891.09153.97073.53104.43755.06202.43582.57734.16312.57734.1631
H103.52442.23931.09152.11893.53103.97075.06204.43752.43584.16312.57734.16312.5773
H111.10473.81643.25962.16393.25962.16392.57734.16312.57734.16314.38821.75124.7247
H123.81641.10472.16393.25962.16393.25964.16312.57734.16312.57734.38824.72471.7512
H131.10473.81643.25962.16393.25962.16392.57734.16312.57734.16311.75124.72474.3882
H143.81641.10472.16393.25962.16393.25964.16312.57734.16312.57734.72471.75124.3882

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 123.575 C1 C4 H9 116.725
C1 C6 C5 123.575 C1 C6 H7 116.725
C2 C3 C4 123.575 C2 C3 H10 116.725
C2 C5 C6 123.575 C2 C5 H8 116.725
C3 C2 C5 112.851 C3 C2 H12 109.707
C3 C2 H14 109.707 C3 C4 H9 119.701
C4 C1 C6 112.851 C4 C1 H11 109.707
C4 C1 H13 109.707 C4 C3 H10 119.701
C5 C2 H12 109.707 C5 C2 H14 109.707
C5 C6 H7 119.701 C6 C1 H11 109.707
C6 C1 H13 109.707 C6 C5 H8 119.701
H11 C1 H13 104.857 H12 C2 H14 104.857
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.450      
2 C -0.450      
3 C -0.049      
4 C -0.049      
5 C -0.049      
6 C -0.049      
7 H 0.127      
8 H 0.127      
9 H 0.127      
10 H 0.127      
11 H 0.147      
12 H 0.147      
13 H 0.147      
14 H 0.147      


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 -35.964 0.000 0.000
y 0.000 -33.561 0.000
z 0.000 0.000 -39.821
Traceless
 xyz
x 0.726 0.000 0.000
y 0.000 4.332 0.000
z 0.000 0.000 -5.059
Polar
3z2-r2-10.117
x2-y2-2.404
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.199 0.000 0.000
y 0.000 13.048 0.000
z 0.000 0.000 6.014


<r2> (average value of r2) Å2
<r2> 122.364
(<r2>)1/2 11.062