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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-309.426075
Energy at 298.15K-309.433852
Nuclear repulsion energy324.995143
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 3189 3027 0.00      
2 A1 1776 1686 0.00      
3 A1 1245 1182 0.00      
4 A1 911 865 0.00      
5 A1 789 749 0.00      
6 A1 180 171 0.00      
7 A2 3155 2995 0.00      
8 A2 1391 1320 0.00      
9 A2 1017 966 0.00      
10 A2 940 892 0.00      
11 A2 231 219 0.00      
12 B1 3164 3003 0.00      
13 B1 1495 1420 0.00      
14 B1 1066 1012 0.00      
15 B1 988 938 0.00      
16 B1 676 642 0.00      
17 B1 262 249 0.00      
18 B2 3175 3014 41.03      
19 B2 1743 1655 0.78      
20 B2 1249 1185 0.94      
21 B2 691 656 80.78      
22 B2 289 274 1.56      
23 E 3182 3021 73.65      
23 E 3182 3021 73.65      
24 E 3158 2998 1.30      
24 E 3158 2998 1.30      
25 E 1748 1659 1.81      
25 E 1748 1659 1.81      
26 E 1447 1373 0.02      
26 E 1447 1373 0.02      
27 E 1260 1196 0.85      
27 E 1260 1196 0.85      
28 E 1006 955 0.38      
28 E 1006 955 0.38      
29 E 982 933 1.45      
29 E 982 933 1.45      
30 E 823 781 20.10      
30 E 823 781 20.10      
31 E 644 611 18.51      
31 E 644 611 18.51      
32 E 363 345 1.34      
32 E 363 345 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 29422.3 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 27930.6 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
0.09070 0.09070 0.05136

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 0.668 1.550 0.387
C2 -0.668 1.550 0.387
C3 0.668 -1.550 0.387
C4 -0.668 -1.550 0.387
C5 1.550 0.668 -0.387
C6 -1.550 0.668 -0.387
C7 1.550 -0.668 -0.387
C8 -1.550 -0.668 -0.387
H9 1.174 2.326 0.959
H10 -1.174 2.326 0.959
H11 1.174 -2.326 0.959
H12 -1.174 -2.326 0.959
H13 2.326 1.174 -0.959
H14 -2.326 1.174 -0.959
H15 2.326 -1.174 -0.959
H16 -2.326 -1.174 -0.959

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.33693.09953.37561.46672.50902.50903.23091.08912.07963.95024.32942.16793.30443.46084.2657
C21.33693.37563.09952.50901.46673.23092.50902.07961.08914.32943.95023.30442.16794.26573.4608
C33.09953.37561.33692.50903.23091.46672.50903.95024.32941.08912.07963.46084.26572.16793.3044
C43.37563.09951.33693.23092.50902.50901.46674.32943.95022.07961.08914.26573.46083.30442.1679
C51.46672.50902.50903.23093.09951.33693.37562.16793.46083.30444.26571.08913.95022.07964.3294
C62.50901.46673.23092.50903.09953.37561.33693.46082.16794.26573.30443.95021.08914.32942.0796
C72.50903.23091.46672.50901.33693.37563.09953.30444.26572.16793.46082.07964.32941.08913.9502
C83.23092.50902.50901.46673.37561.33693.09954.26573.30443.46082.16794.32942.07963.95021.0891
H91.08912.07963.95024.32942.16793.46083.30444.26572.34784.65185.21072.51714.15424.15425.3084
H102.07961.08914.32943.95023.46082.16794.26573.30442.34785.21074.65184.15422.51715.30844.1542
H113.95024.32941.08912.07963.30444.26572.16793.46084.65185.21072.34784.15425.30842.51714.1542
H124.32943.95022.07961.08914.26573.30443.46082.16795.21074.65182.34785.30844.15424.15422.5171
H132.16793.30443.46084.26571.08913.95022.07964.32942.51714.15424.15425.30844.65182.34785.2107
H143.30442.16794.26573.46083.95021.08914.32942.07964.15422.51715.30844.15424.65185.21072.3478
H153.46084.26572.16793.30442.07964.32941.08913.95024.15425.30842.51714.15422.34785.21074.6518
H164.26573.46083.30442.16794.32942.07963.95021.08915.30844.15424.15422.51715.21072.34784.6518

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 126.934 C1 C2 H10 117.653
C1 C5 C7 126.934 C1 C5 H13 115.254
C2 C1 C5 126.934 C2 C1 H9 117.653
C2 C6 C8 126.934 C2 C6 H14 115.254
C3 C4 C8 126.934 C3 C4 H12 117.653
C3 C7 C5 126.934 C3 C7 H15 115.254
C4 C3 C7 126.934 C4 C3 H11 117.653
C4 C8 C6 126.934 C4 C8 H16 115.254
C5 C1 H9 115.254 C5 C7 H15 117.653
C6 C2 H10 115.254 C6 C8 H16 117.653
C7 C3 H11 115.254 C7 C5 H13 117.653
C8 C4 H12 115.254 C8 C6 H14 117.653
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 -0.157      
2 C -0.157      
3 C -0.157      
4 C -0.157      
5 C -0.157      
6 C -0.157      
7 C -0.157      
8 C -0.157      
9 H 0.157      
10 H 0.157      
11 H 0.157      
12 H 0.157      
13 H 0.157      
14 H 0.157      
15 H 0.157      
16 H 0.157      


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 -42.827 0.000 0.000
y 0.000 -42.827 0.000
z 0.000 0.000 -48.052
Traceless
 xyz
x 2.613 0.000 0.000
y 0.000 2.613 0.000
z 0.000 0.000 -5.225
Polar
3z2-r2-10.451
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 13.611 0.000 0.000
y 0.000 13.611 0.000
z 0.000 0.000 6.765


<r2> (average value of r2) Å2
<r2> 233.409
(<r2>)1/2 15.278