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All results from a given calculation for C8H8 (cyclooctatetraene)

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 D2D 1A1
Energy calculated at B3LYP/CEP-121G*
 hartrees
Energy at 0K-49.935448
Energy at 298.15K-49.943079
Nuclear repulsion energy162.668399
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
4/u)
Dep P Dep U
1 A1 3126 3031 0.00      
2 A1 1687 1636 0.00      
3 A1 1227 1190 0.00      
4 A1 877 850 0.00      
5 A1 761 737 0.00      
6 A1 172 167 0.00      
7 A2 3091 2997 0.00      
8 A2 1364 1322 0.00      
9 A2 987 957 0.00      
10 A2 923 895 0.00      
11 A2 224 218 0.00      
12 B1 3101 3006 0.00      
13 B1 1457 1413 0.00      
14 B1 1031 1000 0.00      
15 B1 961 932 0.00      
16 B1 652 632 0.00      
17 B1 258 250 0.00      
18 B2 3112 3017 55.34      
19 B2 1674 1623 0.88      
20 B2 1224 1187 0.89      
21 B2 677 656 105.97      
22 B2 287 278 2.07      
23 E 3119 3024 103.61      
23 E 3119 3024 103.61      
24 E 3095 3000 2.48      
24 E 3095 3000 2.48      
25 E 1667 1616 3.30      
25 E 1667 1616 3.30      
26 E 1417 1373 0.02      
26 E 1417 1373 0.02      
27 E 1241 1203 0.83      
27 E 1241 1203 0.83      
28 E 979 949 0.70      
28 E 979 949 0.70      
29 E 946 917 2.59      
29 E 946 917 2.59      
30 E 799 774 21.22      
30 E 799 774 21.22      
31 E 638 618 22.17      
31 E 638 618 22.17      
32 E 347 337 1.67      
32 E 347 337 1.67      

Unscaled Zero Point Vibrational Energy (zpe) 28684.9 cm-1
Scaled (by 0.9694) Zero Point Vibrational Energy (zpe) 27807.1 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 B3LYP/CEP-121G*
ABC
0.08846 0.08846 0.04973

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

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.675 1.577 0.381
C2 -0.675 1.577 0.381
C3 0.675 -1.577 0.381
C4 -0.675 -1.577 0.381
C5 1.577 0.675 -0.381
C6 -1.577 0.675 -0.381
C7 1.577 -0.675 -0.381
C8 -1.577 -0.675 -0.381
H9 1.178 2.372 0.939
H10 -1.178 2.372 0.939
H11 1.178 -2.372 0.939
H12 -1.178 -2.372 0.939
H13 2.372 1.178 -0.939
H14 -2.372 1.178 -0.939
H15 2.372 -1.178 -0.939
H16 -2.372 -1.178 -0.939

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.35073.15323.43031.48542.54272.54273.27481.09382.09284.01944.39762.18643.34493.49454.3151
C21.35073.43033.15322.54271.48543.27482.54272.09281.09384.39764.01943.34492.18644.31513.4945
C33.15323.43031.35072.54273.27481.48542.54274.01944.39761.09382.09283.49454.31512.18643.3449
C43.43033.15321.35073.27482.54272.54271.48544.39764.01942.09281.09384.31513.49453.34492.1864
C51.48542.54272.54273.27483.15321.35073.43032.18643.49453.34494.31511.09384.01942.09284.3976
C62.54271.48543.27482.54273.15323.43031.35073.49452.18644.31513.34494.01941.09384.39762.0928
C72.54273.27481.48542.54271.35073.43033.15323.34494.31512.18643.49452.09284.39761.09384.0194
C83.27482.54272.54271.48543.43031.35073.15324.31513.34493.49452.18644.39762.09284.01941.0938
H91.09382.09284.01944.39762.18643.49453.34494.31512.35684.74425.29732.52494.19004.19005.3607
H102.09281.09384.39764.01943.49452.18644.31513.34492.35685.29734.74424.19002.52495.36074.1900
H114.01944.39761.09382.09283.34494.31512.18643.49454.74425.29732.35684.19005.36072.52494.1900
H124.39764.01942.09281.09384.31513.34493.49452.18645.29734.74422.35685.36074.19004.19002.5249
H132.18643.34493.49454.31511.09384.01942.09284.39762.52494.19004.19005.36074.74422.35685.2973
H143.34492.18644.31513.49454.01941.09384.39762.09284.19002.52495.36074.19004.74425.29732.3568
H153.49454.31512.18643.34492.09284.39761.09384.01944.19005.36072.52494.19002.35685.29734.7442
H164.31513.49453.34492.18644.39762.09284.01941.09385.36074.19004.19002.52495.29732.35684.7442

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 127.353 C1 C2 H10 117.379
C1 C5 C7 127.353 C1 C5 H13 115.081
C2 C1 C5 127.353 C2 C1 H9 117.379
C2 C6 C8 127.353 C2 C6 H14 115.081
C3 C4 C8 127.353 C3 C4 H12 117.379
C3 C7 C5 127.353 C3 C7 H15 115.081
C4 C3 C7 127.353 C4 C3 H11 117.379
C4 C8 C6 127.353 C4 C8 H16 115.081
C5 C1 H9 115.081 C5 C7 H15 117.379
C6 C2 H10 115.081 C6 C8 H16 117.379
C7 C3 H11 115.081 C7 C5 H13 117.379
C8 C4 H12 115.081 C8 C6 H14 117.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.174      
2 C -0.174      
3 C -0.174      
4 C -0.174      
5 C -0.174      
6 C -0.174      
7 C -0.174      
8 C -0.174      
9 H 0.174      
10 H 0.174      
11 H 0.174      
12 H 0.174      
13 H 0.174      
14 H 0.174      
15 H 0.174      
16 H 0.174      


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 -43.587 0.000 0.000
y 0.000 -43.587 0.000
z 0.000 0.000 -49.758
Traceless
 xyz
x 3.085 0.000 0.000
y 0.000 3.085 0.000
z 0.000 0.000 -6.171
Polar
3z2-r2-12.342
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 15.400 0.000 0.000
y 0.000 15.400 0.000
z 0.000 0.000 8.312


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