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All results from a given calculation for C8H8 (cyclooctatetraene)

using model chemistry: B1B95/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1A1
Energy calculated at B1B95/3-21G
 hartrees
Energy at 0K-307.726719
Energy at 298.15K-307.734565
Nuclear repulsion energy326.534134
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 B1B95/3-21G
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 3182 3044 0.00      
2 A1 1738 1663 0.00      
3 A1 1270 1215 0.00      
4 A1 905 866 0.00      
5 A1 780 747 0.00      
6 A1 191 182 0.00      
7 A2 3145 3008 0.00      
8 A2 1425 1364 0.00      
9 A2 1038 993 0.00      
10 A2 951 910 0.00      
11 A2 231 221 0.00      
12 B1 3153 3017 0.00      
13 B1 1489 1425 0.00      
14 B1 1058 1012 0.00      
15 B1 992 949 0.00      
16 B1 689 659 0.00      
17 B1 241 231 0.00      
18 B2 3166 3029 33.46      
19 B2 1721 1646 2.30      
20 B2 1267 1212 1.91      
21 B2 707 676 105.78      
22 B2 299 286 3.14      
23 E 3174 3036 50.21      
23 E 3174 3036 50.21      
24 E 3148 3011 0.59      
24 E 3148 3011 0.59      
25 E 1718 1644 1.27      
25 E 1718 1644 1.27      
26 E 1463 1399 1.59      
26 E 1463 1399 1.59      
27 E 1283 1228 0.54      
27 E 1283 1228 0.54      
28 E 1022 977 0.54      
28 E 1022 977 0.54      
29 E 981 938 2.86      
29 E 981 938 2.86      
30 E 822 787 28.57      
30 E 822 787 28.57      
31 E 645 617 23.77      
31 E 645 617 23.77      
32 E 357 342 2.70      
32 E 357 342 2.70      

Unscaled Zero Point Vibrational Energy (zpe) 29430.7 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 28156.3 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 B1B95/3-21G
ABC
0.09152 0.09152 0.05319

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G

Point Group is D2d

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.668 1.520 0.422
C2 -0.668 1.520 0.422
C3 0.668 -1.520 0.422
C4 -0.668 -1.520 0.422
C5 1.520 0.668 -0.422
C6 -1.520 0.668 -0.422
C7 1.520 -0.668 -0.422
C8 -1.520 -0.668 -0.422
H9 1.191 2.250 1.037
H10 -1.191 2.250 1.037
H11 1.191 -2.250 1.037
H12 -1.191 -2.250 1.037
H13 2.250 1.191 -1.037
H14 -2.250 1.191 -1.037
H15 2.250 -1.191 -1.037
H16 -2.250 -1.191 -1.037

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14 H15 H16
C11.33543.04063.32091.47122.49502.49503.20711.08852.08923.85564.24802.17713.27843.46134.2413
C21.33543.32093.04062.49501.47123.20712.49502.08921.08854.24803.85563.27842.17714.24133.4613
C33.04063.32091.33542.49503.20711.47122.49503.85564.24801.08852.08923.46134.24132.17713.2784
C43.32093.04061.33543.20712.49502.49501.47124.24803.85562.08921.08854.24133.46133.27842.1771
C51.47122.49502.49503.20713.04061.33543.32092.17713.46133.27844.24131.08853.85562.08924.2480
C62.49501.47123.20712.49503.04063.32091.33543.46132.17714.24133.27843.85561.08854.24802.0892
C72.49503.20711.47122.49501.33543.32093.04063.27844.24132.17713.46132.08924.24801.08853.8556
C83.20712.49502.49501.47123.32091.33543.04064.24133.27843.46132.17714.24802.08923.85561.0885
H91.08852.08923.85564.24802.17713.46133.27844.24132.38144.49955.09082.55884.15484.15485.2893
H102.08921.08854.24803.85563.46132.17714.24133.27842.38145.09084.49954.15482.55885.28934.1548
H113.85564.24801.08852.08923.27844.24132.17713.46134.49955.09082.38144.15485.28932.55884.1548
H124.24803.85562.08921.08854.24133.27843.46132.17715.09084.49952.38145.28934.15484.15482.5588
H132.17713.27843.46134.24131.08853.85562.08924.24802.55884.15484.15485.28934.49952.38145.0908
H143.27842.17714.24133.46133.85561.08854.24802.08924.15482.55885.28934.15484.49955.09082.3814
H153.46134.24132.17713.27842.08924.24801.08853.85564.15485.28932.55884.15482.38145.09084.4995
H164.24133.46133.27842.17714.24802.08923.85561.08855.28934.15484.15482.55885.09082.38144.4995

picture of cyclooctatetraene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C6 125.417 C1 C2 H10 118.716
C1 C5 C7 125.417 C1 C5 H13 115.727
C2 C1 C5 125.417 C2 C1 H9 118.716
C2 C6 C8 125.417 C2 C6 H14 115.727
C3 C4 C8 125.417 C3 C4 H12 118.716
C3 C7 C5 125.417 C3 C7 H15 115.727
C4 C3 C7 125.417 C4 C3 H11 118.716
C4 C8 C6 125.417 C4 C8 H16 115.727
C5 C1 H9 115.727 C5 C7 H15 118.716
C6 C2 H10 115.727 C6 C8 H16 118.716
C7 C3 H11 115.727 C7 C5 H13 118.716
C8 C4 H12 115.727 C8 C6 H14 118.716
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.214      
2 C -0.214      
3 C -0.214      
4 C -0.214      
5 C -0.214      
6 C -0.214      
7 C -0.214      
8 C -0.214      
9 H 0.214      
10 H 0.214      
11 H 0.214      
12 H 0.214      
13 H 0.214      
14 H 0.214      
15 H 0.214      
16 H 0.214      


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 -43.402 0.000 0.000
y 0.000 -43.402 0.000
z 0.000 0.000 -48.293
Traceless
 xyz
x 2.446 0.000 0.000
y 0.000 2.446 0.000
z 0.000 0.000 -4.892
Polar
3z2-r2-9.783
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 12.560 0.000 0.000
y 0.000 12.560 0.000
z 0.000 0.000 6.396


<r2> (average value of r2) Å2
<r2> 229.436
(<r2>)1/2 15.147