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All results from a given calculation for C8H8 (cyclooctatetraene)

using model chemistry: LSDA/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 LSDA/6-31G
 hartrees
Energy at 0K-307.719214
Energy at 298.15K-307.726868
Nuclear repulsion energy324.219631
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 LSDA/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 3093 3030 0.00      
2 A1 1750 1715 0.00      
3 A1 1220 1196 0.00      
4 A1 900 882 0.00      
5 A1 781 765 0.00      
6 A1 179 175 0.00      
7 A2 3055 2993 0.00      
8 A2 1367 1339 0.00      
9 A2 990 970 0.00      
10 A2 933 914 0.00      
11 A2 224 219 0.00      
12 B1 3064 3002 0.00      
13 B1 1457 1427 0.00      
14 B1 1065 1043 0.00      
15 B1 968 949 0.00      
16 B1 664 650 0.00      
17 B1 245 240 0.00      
18 B2 3076 3014 32.93      
19 B2 1692 1658 1.19      
20 B2 1224 1200 1.44      
21 B2 679 665 106.77      
22 B2 286 281 3.18      
23 E 3084 3022 62.17      
23 E 3084 3022 62.17      
24 E 3058 2996 0.35      
24 E 3058 2996 0.35      
25 E 1705 1670 0.97      
25 E 1705 1670 0.97      
26 E 1414 1385 1.65      
26 E 1414 1385 1.65      
27 E 1237 1212 0.70      
27 E 1237 1212 0.70      
28 E 985 965 0.47      
28 E 985 965 0.47      
29 E 968 948 1.30      
29 E 968 948 1.30      
30 E 815 799 22.62      
30 E 815 799 22.62      
31 E 644 631 20.50      
31 E 644 631 20.50      
32 E 337 331 1.62      
32 E 337 331 1.62      

Unscaled Zero Point Vibrational Energy (zpe) 28702.7 cm-1
Scaled (by 0.9797) Zero Point Vibrational Energy (zpe) 28120.1 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 LSDA/6-31G
ABC
0.09044 0.09044 0.05112

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.673 1.551 0.383
C2 -0.673 1.551 0.383
C3 0.673 -1.551 0.383
C4 -0.673 -1.551 0.383
C5 1.551 0.673 -0.383
C6 -1.551 0.673 -0.383
C7 1.551 -0.673 -0.383
C8 -1.551 -0.673 -0.383
H9 1.183 2.340 0.957
H10 -1.183 2.340 0.957
H11 1.183 -2.340 0.957
H12 -1.183 -2.340 0.957
H13 2.340 1.183 -0.957
H14 -2.340 1.183 -0.957
H15 2.340 -1.183 -0.957
H16 -2.340 -1.183 -0.957

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.34613.10163.38111.45882.51062.51063.23701.10132.09693.96614.34912.17093.31863.47124.2837
C21.34613.38113.10162.51061.45883.23702.51062.09691.10134.34913.96613.31862.17094.28373.4712
C33.10163.38111.34612.51063.23701.45882.51063.96614.34911.10132.09693.47124.28372.17093.3186
C43.38113.10161.34613.23702.51062.51061.45884.34913.96612.09691.10134.28373.47123.31862.1709
C51.45882.51062.51063.23703.10161.34613.38112.17093.47123.31864.28371.10133.96612.09694.3491
C62.51061.45883.23702.51063.10163.38111.34613.47122.17094.28373.31863.96611.10134.34912.0969
C72.51063.23701.45882.51061.34613.38113.10163.31864.28372.17093.47122.09694.34911.10133.9661
C83.23702.51062.51061.45883.38111.34613.10164.28373.31863.47122.17094.34912.09693.96611.1013
H91.10132.09693.96614.34912.17093.47123.31864.28372.36544.68065.24442.51934.17364.17365.3376
H102.09691.10134.34913.96613.47122.17094.28373.31862.36545.24444.68064.17362.51935.33764.1736
H113.96614.34911.10132.09693.31864.28372.17093.47124.68065.24442.36544.17365.33762.51934.1736
H124.34913.96612.09691.10134.28373.31863.47122.17095.24444.68062.36545.33764.17364.17362.5193
H132.17093.31863.47124.28371.10133.96612.09694.34912.51934.17364.17365.33764.68062.36545.2444
H143.31862.17094.28373.47123.96611.10134.34912.09694.17362.51935.33764.17364.68065.24442.3654
H153.47124.28372.17093.31862.09694.34911.10133.96614.17365.33762.51934.17362.36545.24444.6806
H164.28373.47123.31862.17094.34912.09693.96611.10135.33764.17364.17362.51935.24442.36544.6806

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 126.989 C1 C2 H10 117.567
C1 C5 C7 126.989 C1 C5 H13 115.267
C2 C1 C5 126.989 C2 C1 H9 117.567
C2 C6 C8 126.989 C2 C6 H14 115.267
C3 C4 C8 126.989 C3 C4 H12 117.567
C3 C7 C5 126.989 C3 C7 H15 115.267
C4 C3 C7 126.989 C4 C3 H11 117.567
C4 C8 C6 126.989 C4 C8 H16 115.267
C5 C1 H9 115.267 C5 C7 H15 117.567
C6 C2 H10 115.267 C6 C8 H16 117.567
C7 C3 H11 115.267 C7 C5 H13 117.567
C8 C4 H12 115.267 C8 C6 H14 117.567
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.151      
2 C -0.151      
3 C -0.151      
4 C -0.151      
5 C -0.151      
6 C -0.151      
7 C -0.151      
8 C -0.151      
9 H 0.151      
10 H 0.151      
11 H 0.151      
12 H 0.151      
13 H 0.151      
14 H 0.151      
15 H 0.151      
16 H 0.151      


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 -42.837 0.000 0.000
y 0.000 -42.837 0.000
z 0.000 0.000 -48.493
Traceless
 xyz
x 2.828 0.000 0.000
y 0.000 2.828 0.000
z 0.000 0.000 -5.656
Polar
3z2-r2-11.311
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 13.972 0.000 0.000
y 0.000 13.972 0.000
z 0.000 0.000 6.722


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