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All results from a given calculation for C8H8 (cyclooctatetraene)

using model chemistry: B1B95/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B1B95/6-31G**
 hartrees
Energy at 0K-309.440427
Energy at 298.15K-309.448190
Nuclear repulsion energy324.811601
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 B1B95/6-31G**
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 3175 3032 0.00      
2 A1 1764 1684 0.00      
3 A1 1232 1177 0.00      
4 A1 906 865 0.00      
5 A1 785 749 0.00      
6 A1 179 171 0.00      
7 A2 3141 2999 0.00      
8 A2 1375 1313 0.00      
9 A2 1011 965 0.00      
10 A2 934 892 0.00      
11 A2 230 219 0.00      
12 B1 3150 3008 0.00      
13 B1 1481 1414 0.00      
14 B1 1058 1010 0.00      
15 B1 982 938 0.00      
16 B1 673 642 0.00      
17 B1 261 249 0.00      
18 B2 3161 3018 39.13      
19 B2 1730 1652 0.66      
20 B2 1236 1181 0.90      
21 B2 687 656 77.81      
22 B2 287 274 1.43      
23 E 3168 3025 68.28      
23 E 3168 3025 68.28      
24 E 3145 3003 0.98      
24 E 3145 3003 0.98      
25 E 1736 1657 1.76      
25 E 1736 1657 1.76      
26 E 1431 1366 0.03      
26 E 1431 1366 0.03      
27 E 1248 1191 0.96      
27 E 1248 1191 0.96      
28 E 1000 955 0.45      
28 E 1000 955 0.45      
29 E 976 932 1.27      
29 E 976 932 1.27      
30 E 818 781 19.48      
30 E 818 781 19.48      
31 E 641 612 17.87      
31 E 641 612 17.87      
32 E 360 344 1.22      
32 E 360 344 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 29240.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 27918.7 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 B1B95/6-31G**
ABC
0.09060 0.09060 0.05130

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G**

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.669 1.551 0.387
C2 -0.669 1.551 0.387
C3 0.669 -1.551 0.387
C4 -0.669 -1.551 0.387
C5 1.551 0.669 -0.387
C6 -1.551 0.669 -0.387
C7 1.551 -0.669 -0.387
C8 -1.551 -0.669 -0.387
H9 1.174 2.328 0.959
H10 -1.174 2.328 0.959
H11 1.174 -2.328 0.959
H12 -1.174 -2.328 0.959
H13 2.328 1.174 -0.959
H14 -2.328 1.174 -0.959
H15 2.328 -1.174 -0.959
H16 -2.328 -1.174 -0.959

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.33813.10123.37761.46722.51042.51043.23291.08942.08063.95274.33202.16903.30663.46224.2680
C21.33813.37763.10122.51041.46723.23292.51042.08061.08944.33203.95273.30662.16904.26803.4622
C33.10123.37761.33812.51043.23291.46722.51043.95274.33201.08942.08063.46224.26802.16903.3066
C43.37763.10121.33813.23292.51042.51041.46724.33203.95272.08061.08944.26803.46223.30662.1690
C51.46722.51042.51043.23293.10121.33813.37762.16903.46223.30664.26801.08943.95272.08064.3320
C62.51041.46723.23292.51043.10123.37761.33813.46222.16904.26803.30663.95271.08944.33202.0806
C72.51043.23291.46722.51041.33813.37763.10123.30664.26802.16903.46222.08064.33201.08943.9527
C83.23292.51042.51041.46723.37761.33813.10124.26803.30663.46222.16904.33202.08063.95271.0894
H91.08942.08063.95274.33202.16903.46223.30664.26802.34824.65545.21412.51844.15624.15625.3109
H102.08061.08944.33203.95273.46222.16904.26803.30662.34825.21414.65544.15622.51845.31094.1562
H113.95274.33201.08942.08063.30664.26802.16903.46224.65545.21412.34824.15625.31092.51844.1562
H124.33203.95272.08061.08944.26803.30663.46222.16905.21414.65542.34825.31094.15624.15622.5184
H132.16903.30663.46224.26801.08943.95272.08064.33202.51844.15624.15625.31094.65542.34825.2141
H143.30662.16904.26803.46223.95271.08944.33202.08064.15622.51845.31094.15624.65545.21412.3482
H153.46224.26802.16903.30662.08064.33201.08943.95274.15625.31092.51844.15622.34825.21414.6554
H164.26803.46223.30662.16904.33202.08063.95271.08945.31094.15624.15622.51845.21412.34824.6554

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 126.932 C1 C2 H10 117.622
C1 C5 C7 126.932 C1 C5 H13 115.283
C2 C1 C5 126.932 C2 C1 H9 117.622
C2 C6 C8 126.932 C2 C6 H14 115.283
C3 C4 C8 126.932 C3 C4 H12 117.622
C3 C7 C5 126.932 C3 C7 H15 115.283
C4 C3 C7 126.932 C4 C3 H11 117.622
C4 C8 C6 126.932 C4 C8 H16 115.283
C5 C1 H9 115.283 C5 C7 H15 117.622
C6 C2 H10 115.283 C6 C8 H16 117.622
C7 C3 H11 115.283 C7 C5 H13 117.622
C8 C4 H12 115.283 C8 C6 H14 117.622
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.113      
2 C -0.113      
3 C -0.113      
4 C -0.113      
5 C -0.113      
6 C -0.113      
7 C -0.113      
8 C -0.113      
9 H 0.113      
10 H 0.113      
11 H 0.113      
12 H 0.113      
13 H 0.113      
14 H 0.113      
15 H 0.113      
16 H 0.113      


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 -42.914 0.000 0.000
y 0.000 -42.914 0.000
z 0.000 0.000 -48.011
Traceless
 xyz
x 2.548 0.000 0.000
y 0.000 2.548 0.000
z 0.000 0.000 -5.096
Polar
3z2-r2-10.193
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 13.762 0.000 0.000
y 0.000 13.762 0.000
z 0.000 0.000 6.869


<r2> (average value of r2) Å2
<r2> 233.674
(<r2>)1/2 15.286