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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: M06-2X/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at M06-2X/6-311G**
 hartrees
Energy at 0K-308.297423
Energy at 298.15K-308.303079
HF Energy-308.297423
Nuclear repulsion energy313.151975
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 M06-2X/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3233 3233 3.09      
2 A1 3212 3212 5.62      
3 A1 3198 3198 8.61      
4 A1 1736 1736 3.03      
5 A1 1608 1608 0.90      
6 A1 1519 1519 3.87      
7 A1 1449 1449 12.40      
8 A1 1193 1193 0.01      
9 A1 1112 1112 0.06      
10 A1 1062 1062 0.45      
11 A1 981 981 5.23      
12 A1 829 829 0.71      
13 A1 549 549 0.15      
14 A2 994 994 0.00      
15 A2 937 937 0.00      
16 A2 900 900 0.00      
17 A2 777 777 0.00      
18 A2 585 585 0.00      
19 A2 287 287 0.00      
20 B1 939 939 8.96      
21 B1 759 759 111.61      
22 B1 714 714 10.12      
23 B1 357 357 2.98      
24 B1 228 228 16.05      
25 B2 3206 3206 14.44      
26 B2 3202 3202 0.37      
27 B2 3185 3185 0.11      
28 B2 1689 1689 0.60      
29 B2 1468 1468 4.88      
30 B2 1307 1307 4.64      
31 B2 1253 1253 13.44      
32 B2 1103 1103 1.95      
33 B2 1054 1054 0.45      
34 B2 878 878 0.87      
35 B2 655 655 0.72      
36 B2 418 418 4.28      

Unscaled Zero Point Vibrational Energy (zpe) 24285.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24285.9 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 M06-2X/6-311G**
ABC
0.16217 0.07352 0.05059

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.438 -0.617
C2 0.000 0.682 -1.842
C3 0.000 -0.682 -1.842
C4 0.000 -1.438 -0.617
C5 0.000 -0.671 2.040
C6 0.000 0.671 2.040
C7 0.000 0.715 0.524
C8 0.000 -0.715 0.524
H9 0.000 2.521 -0.644
H10 0.000 1.219 -2.783
H11 0.000 -1.219 -2.783
H12 0.000 -2.521 -0.644
H13 0.000 -1.438 2.800
H14 0.000 1.438 2.800

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.43952.44842.87543.39142.76501.35052.43601.08332.17733.42773.95844.46623.4171
C21.43951.36422.44844.11063.88172.36612.74752.19431.08332.12103.41945.10364.7035
C32.44841.36421.43953.88174.11062.74752.36613.41942.12101.08332.19434.70355.1036
C42.87542.44841.43952.76503.39142.43601.35053.95843.42772.17731.08333.41714.4662
C53.39144.11063.88172.76501.34132.05351.51644.16985.17964.85373.25961.08062.2419
C62.76503.88174.11063.39141.34131.51642.05353.25964.85375.17964.16982.24191.0806
C71.35052.36612.74752.43602.05351.51641.42942.15073.34513.83063.43973.13322.3886
C82.43602.74752.36611.35051.51642.05351.42943.43973.83063.34512.15072.38863.1332
H91.08332.19433.41943.95844.16983.25962.15073.43972.50404.30785.04135.24753.6105
H102.17731.08332.12103.42775.17964.85373.34513.83062.50402.43744.30786.18325.5876
H113.42772.12101.08332.17734.85375.17963.83063.34514.30782.43742.50405.58766.1832
H123.95843.41942.19431.08333.25964.16983.43972.15075.04134.30782.50403.61055.2475
H134.46625.10364.70353.41711.08062.24193.13322.38865.24756.18325.58763.61052.8765
H143.41714.70355.10364.46622.24191.08062.38863.13323.61055.58766.18325.24752.8765

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.662 C1 C2 H10 118.644
C1 C7 C6 149.299 C1 C7 N8 122.366
C2 C1 C7 115.972 C2 C1 H9 120.216
C2 C3 C4 121.662 C2 C3 H11 119.694
C3 C2 H10 119.694 C3 C4 N8 115.972
C3 C4 H12 120.216 C4 C3 H11 118.644
C4 N8 C5 149.299 C4 N8 C7 122.366
C5 C6 C7 91.665 C5 C6 H14 135.261
C5 N8 C7 88.335 C6 C5 N8 91.665
C6 C5 H13 135.261 C6 C7 N8 88.335
C7 C1 H9 123.812 C7 C6 H14 133.074
N8 C4 H12 123.812 N8 C5 H13 133.074
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.099      
2 C -0.139      
3 C -0.139      
4 C -0.099      
5 C -0.093      
6 C -0.093      
7 C -0.047      
8 C -0.047      
9 H 0.125      
10 H 0.126      
11 H 0.126      
12 H 0.125      
13 H 0.126      
14 H 0.126      


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 0.686 0.686
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.221 0.000 0.000
y 0.000 -40.710 0.000
z 0.000 0.000 -40.002
Traceless
 xyz
x -10.865 0.000 0.000
y 0.000 4.901 0.000
z 0.000 0.000 5.963
Polar
3z2-r211.926
x2-y2-10.511
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.250 0.000 0.000
y 0.000 13.349 0.000
z 0.000 0.000 15.882


<r2> (average value of r2) Å2
<r2> 219.869
(<r2>)1/2 14.828