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All results from a given calculation for C8H8 (cyclooctatetraene)

using model chemistry: B3LYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B3LYP/6-31G
 hartrees
Energy at 0K-309.514751
Energy at 298.15K-309.522644
Nuclear repulsion energy322.181000
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/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 A1 3160 3040 0.00      
2 A1 1745 1679 0.00      
3 A1 1282 1233 0.00      
4 A1 899 865 0.00      
5 A1 790 760 0.00      
6 A1 176 169 0.00      
7 A2 3119 3001 0.00      
8 A2 1434 1379 0.00      
9 A2 1033 994 0.00      
10 A2 964 928 0.00      
11 A2 235 226 0.00      
12 B1 3130 3011 0.00      
13 B1 1498 1441 0.00      
14 B1 1075 1034 0.00      
15 B1 1004 966 0.00      
16 B1 680 654 0.00      
17 B1 267 257 0.00      
18 B2 3142 3022 50.72      
19 B2 1718 1653 1.09      
20 B2 1274 1226 0.61      
21 B2 701 674 97.44      
22 B2 300 289 1.93      
23 E 3151 3031 100.42      
23 E 3151 3031 100.42      
24 E 3123 3004 1.17      
24 E 3123 3004 1.17      
25 E 1715 1650 1.66      
25 E 1715 1650 1.66      
26 E 1471 1415 0.26      
26 E 1471 1415 0.26      
27 E 1296 1247 0.39      
27 E 1296 1247 0.39      
28 E 1024 985 0.45      
28 E 1024 985 0.45      
29 E 973 936 1.87      
29 E 973 936 1.87      
30 E 830 799 16.21      
30 E 830 799 16.21      
31 E 669 644 19.10      
31 E 669 644 19.10      
32 E 363 349 0.89      
32 E 363 349 0.89      

Unscaled Zero Point Vibrational Energy (zpe) 29428.8 cm-1
Scaled (by 0.962) Zero Point Vibrational Energy (zpe) 28310.5 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/6-31G
ABC
0.08909 0.08909 0.04980

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.673 1.576 0.370
C2 -0.673 1.576 0.370
C3 0.673 -1.576 0.370
C4 -0.673 -1.576 0.370
C5 1.576 0.673 -0.370
C6 -1.576 0.673 -0.370
C7 1.576 -0.673 -0.370
C8 -1.576 -0.673 -0.370
H9 1.176 2.372 0.921
H10 -1.176 2.372 0.921
H11 1.176 -2.372 0.921
H12 -1.176 -2.372 0.921
H13 2.372 1.176 -0.921
H14 -2.372 1.176 -0.921
H15 2.372 -1.176 -0.921
H16 -2.372 -1.176 -0.921

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.34673.15203.42771.47532.53402.53403.26591.09132.08774.01834.39482.17103.33213.48244.3031
C21.34673.42773.15202.53401.47533.26592.53402.08771.09134.39484.01833.33212.17104.30313.4824
C33.15203.42771.34672.53403.26591.47532.53404.01834.39481.09132.08773.48244.30312.17103.3321
C43.42773.15201.34673.26592.53402.53401.47534.39484.01832.08771.09134.30313.48243.33212.1710
C51.47532.53402.53403.26593.15201.34673.42772.17103.48243.33214.30311.09134.01832.08774.3948
C62.53401.47533.26592.53403.15203.42771.34673.48242.17104.30313.33214.01831.09134.39482.0877
C72.53403.26591.47532.53401.34673.42773.15203.33214.30312.17103.48242.08774.39481.09134.0183
C83.26592.53402.53401.47533.42771.34673.15204.30313.33213.48242.17104.39482.08774.01831.0913
H91.09132.08774.01834.39482.17103.48243.33214.30312.35204.74485.29582.50144.17334.17335.3457
H102.08771.09134.39484.01833.48242.17104.30313.33212.35205.29584.74484.17332.50145.34574.1733
H114.01834.39481.09132.08773.33214.30312.17103.48244.74485.29582.35204.17335.34572.50144.1733
H124.39484.01832.08771.09134.30313.33213.48242.17105.29584.74482.35205.34574.17334.17332.5014
H132.17103.33213.48244.30311.09134.01832.08774.39482.50144.17334.17335.34574.74482.35205.2958
H143.33212.17104.30313.48244.01831.09134.39482.08774.17332.50145.34574.17334.74485.29582.3520
H153.48244.30312.17103.33212.08774.39481.09134.01834.17335.34572.50144.17332.35205.29584.7448
H164.30313.48243.33212.17104.39482.08774.01831.09135.34574.17334.17332.50145.29582.35204.7448

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 127.723 C1 C2 H10 117.426
C1 C5 C7 127.723 C1 C5 H13 114.706
C2 C1 C5 127.723 C2 C1 H9 117.426
C2 C6 C8 127.723 C2 C6 H14 114.706
C3 C4 C8 127.723 C3 C4 H12 117.426
C3 C7 C5 127.723 C3 C7 H15 114.706
C4 C3 C7 127.723 C4 C3 H11 117.426
C4 C8 C6 127.723 C4 C8 H16 114.706
C5 C1 H9 114.706 C5 C7 H15 117.426
C6 C2 H10 114.706 C6 C8 H16 117.426
C7 C3 H11 114.706 C7 C5 H13 117.426
C8 C4 H12 114.706 C8 C6 H14 117.426
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.124      
2 C -0.124      
3 C -0.124      
4 C -0.124      
5 C -0.124      
6 C -0.124      
7 C -0.124      
8 C -0.124      
9 H 0.124      
10 H 0.124      
11 H 0.124      
12 H 0.124      
13 H 0.124      
14 H 0.124      
15 H 0.124      
16 H 0.124      


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 -43.363 0.000 0.000
y 0.000 -43.363 0.000
z 0.000 0.000 -48.902
Traceless
 xyz
x 2.769 0.000 0.000
y 0.000 2.769 0.000
z 0.000 0.000 -5.538
Polar
3z2-r2-11.076
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 13.835 0.000 0.000
y 0.000 13.835 0.000
z 0.000 0.000 6.296


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