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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: M06-2X/6-31G**

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/6-31G**
 hartrees
Energy at 0K-308.230555
Energy at 298.15K-308.236199
HF Energy-308.230555
Nuclear repulsion energy312.880861
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/6-31G**
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 3263 3101 6.66      
2 A1 3224 3064 8.17      
3 A1 3211 3051 11.63      
4 A1 1752 1665 2.80      
5 A1 1631 1550 0.43      
6 A1 1536 1460 3.03      
7 A1 1460 1387 12.04      
8 A1 1193 1134 0.04      
9 A1 1122 1066 0.16      
10 A1 1075 1022 0.27      
11 A1 991 942 3.74      
12 A1 834 792 0.53      
13 A1 549 522 0.12      
14 A2 988 939 0.00      
15 A2 934 887 0.00      
16 A2 896 851 0.00      
17 A2 782 743 0.00      
18 A2 585 556 0.00      
19 A2 291 276 0.00      
20 B1 932 886 8.37      
21 B1 760 722 92.72      
22 B1 721 685 7.33      
23 B1 360 342 1.86      
24 B1 233 222 10.95      
25 B2 3233 3072 0.05      
26 B2 3219 3059 20.42      
27 B2 3197 3038 0.16      
28 B2 1706 1621 0.64      
29 B2 1476 1403 4.31      
30 B2 1312 1247 5.04      
31 B2 1261 1199 12.03      
32 B2 1107 1052 1.52      
33 B2 1055 1003 1.16      
34 B2 877 834 0.56      
35 B2 653 621 0.64      
36 B2 422 401 3.74      

Unscaled Zero Point Vibrational Energy (zpe) 24419.4 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 23208.2 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/6-31G**
ABC
0.16174 0.07345 0.05051

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.440 -0.617
C2 0.000 0.683 -1.843
C3 0.000 -0.683 -1.843
C4 0.000 -1.440 -0.617
C5 0.000 -0.671 2.041
C6 0.000 0.671 2.041
C7 0.000 0.715 0.525
C8 0.000 -0.715 0.525
H9 0.000 2.524 -0.645
H10 0.000 1.221 -2.786
H11 0.000 -1.221 -2.786
H12 0.000 -2.524 -0.645
H13 0.000 -1.440 2.803
H14 0.000 1.440 2.803

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.44042.45142.87913.39422.76691.35272.43871.08512.17923.43233.96394.47093.4202
C21.44041.36662.45144.11343.88402.36852.75032.19661.08502.12483.42415.10834.7073
C32.45141.36661.44043.88404.11342.75032.36853.42412.12481.08502.19664.70735.1083
C42.87912.45141.44042.76693.39422.43871.35273.96393.43232.17921.08513.42024.4709
C53.39424.11343.88402.76691.34262.05411.51634.17425.18404.85753.26281.08242.2445
C62.76693.88404.11343.39421.34261.51632.05413.26284.85755.18404.17422.24451.0824
C71.35272.36852.75032.43872.05411.51631.43022.15453.34903.83523.44423.13572.3904
C82.43872.75032.36851.35271.51632.05411.43023.44423.83523.34902.15452.39043.1357
H91.08512.19663.42413.96394.17423.26282.15453.44422.50604.31405.04855.25373.6143
H102.17921.08502.12483.43235.18404.85753.34903.83522.50602.44244.31406.18965.5927
H113.43232.12481.08502.17924.85755.18403.83523.34904.31402.44242.50605.59276.1896
H123.96393.42412.19661.08513.26284.17423.44422.15455.04854.31402.50603.61435.2537
H134.47095.10834.70733.42021.08242.24453.13572.39045.25376.18965.59273.61432.8796
H143.42024.70735.10834.47092.24451.08242.39043.13573.61435.59276.18965.25372.8796

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.670 C1 C2 H10 118.610
C1 C7 C6 149.274 C1 C7 N8 122.381
C2 C1 C7 115.949 C2 C1 H9 120.213
C2 C3 C4 121.670 C2 C3 H11 119.720
C3 C2 H10 119.720 C3 C4 N8 115.949
C3 C4 H12 120.213 C4 C3 H11 118.610
C4 N8 C5 149.274 C4 N8 C7 122.381
C5 C6 C7 91.656 C5 C6 H14 135.238
C5 N8 C7 88.344 C6 C5 N8 91.656
C6 C5 H13 135.238 C6 C7 N8 88.344
C7 C1 H9 123.838 C7 C6 H14 133.106
N8 C4 H12 123.838 N8 C5 H13 133.106
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189      
2 C -0.128      
3 C -0.128      
4 C -0.189      
5 C -0.122      
6 C -0.122      
7 C 0.057      
8 C 0.057      
9 H 0.125      
10 H 0.116      
11 H 0.116      
12 H 0.125      
13 H 0.141      
14 H 0.141      


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 0.702 0.702
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.937 0.000 0.000
y 0.000 -40.375 0.000
z 0.000 0.000 -39.613
Traceless
 xyz
x -9.943 0.000 0.000
y 0.000 4.401 0.000
z 0.000 0.000 5.543
Polar
3z2-r211.085
x2-y2-9.563
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.087 0.000 0.000
y 0.000 12.979 0.000
z 0.000 0.000 15.386


<r2> (average value of r2) Å2
<r2> 219.746
(<r2>)1/2 14.824