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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-308.168817
Energy at 298.15K-308.174223
HF Energy-308.168817
Nuclear repulsion energy310.340704
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 B97D3/6-31+G**
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 3194 3139 18.43      
2 A1 3152 3098 23.73      
3 A1 3136 3082 11.06      
4 A1 1660 1631 1.33      
5 A1 1519 1493 5.26      
6 A1 1474 1448 2.09      
7 A1 1409 1385 6.97      
8 A1 1167 1147 0.01      
9 A1 1076 1058 0.00      
10 A1 1044 1026 1.06      
11 A1 966 949 4.59      
12 A1 799 785 0.09      
13 A1 539 530 0.22      
14 A2 929 913 0.00      
15 A2 872 857 0.00      
16 A2 837 822 0.00      
17 A2 746 733 0.00      
18 A2 563 554 0.00      
19 A2 286 282 0.00      
20 B1 880 865 7.66      
21 B1 716 704 124.30      
22 B1 685 673 5.18      
23 B1 348 342 2.51      
24 B1 214 210 13.17      
25 B2 3165 3110 4.73      
26 B2 3143 3089 47.71      
27 B2 3125 3071 0.11      
28 B2 1607 1579 0.15      
29 B2 1427 1403 2.52      
30 B2 1277 1255 2.43      
31 B2 1224 1203 12.68      
32 B2 1073 1055 2.73      
33 B2 1025 1007 1.11      
34 B2 857 843 0.27      
35 B2 646 635 0.74      
36 B2 406 399 4.19      

Unscaled Zero Point Vibrational Energy (zpe) 23593.0 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 23187.2 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 B97D3/6-31+G**
ABC
0.15908 0.07226 0.04969

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.453 -0.628
C2 0.000 0.694 -1.855
C3 0.000 -0.694 -1.855
C4 0.000 -1.453 -0.628
C5 0.000 -0.683 2.058
C6 0.000 0.683 2.058
C7 0.000 0.716 0.527
C8 0.000 -0.716 0.527
H9 0.000 2.543 -0.649
H10 0.000 1.229 -2.804
H11 0.000 -1.229 -2.804
H12 0.000 -2.543 -0.649
H13 0.000 -1.440 2.839
H14 0.000 1.440 2.839

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.44252.47242.90583.43172.79451.37012.45771.08992.18743.45393.99564.51513.4668
C21.44251.38762.47244.14783.91282.38192.76792.20691.09002.14473.45355.15554.7522
C32.47241.38761.44253.91284.14782.76792.38193.45352.14471.09002.20694.75225.1555
C42.90582.47241.44252.79453.43172.45771.37013.99563.45392.18741.08993.46684.5151
C53.43174.14783.91282.79451.36522.07391.53144.21115.22464.89293.28491.08742.2613
C62.79453.91284.14783.43171.36521.53142.07393.28494.89295.22464.21112.26131.0874
C71.37012.38192.76792.45772.07391.53141.43272.17243.37053.85783.46483.16102.4221
C82.45772.76792.38191.37011.53142.07391.43273.46483.85783.37052.17242.42213.1610
H91.08992.20693.45353.99564.21113.28492.17243.46482.52334.34405.08525.29403.6583
H102.18741.09002.14473.45395.22464.89293.37053.85782.52332.45874.34406.24225.6467
H113.45392.14471.09002.18744.89295.22463.85783.37054.34402.45872.52335.64676.2422
H123.99563.45352.20691.08993.28494.21113.46482.17245.08524.34402.52333.65835.2940
H134.51515.15554.75223.46681.08742.26133.16102.42215.29406.24225.64673.65832.8795
H143.46684.75225.15554.51512.26131.08742.42213.16103.65835.64676.24225.29402.8795

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.715 C1 C2 H10 118.846
C1 C7 C6 148.807 C1 C7 N8 122.466
C2 C1 C7 115.819 C2 C1 H9 120.515
C2 C3 C4 121.715 C2 C3 H11 119.439
C3 C2 H10 119.439 C3 C4 N8 115.819
C3 C4 H12 120.515 C4 C3 H11 118.846
C4 N8 C5 148.807 C4 N8 C7 122.466
C5 C6 C7 91.273 C5 C6 H14 134.300
C5 N8 C7 88.727 C6 C5 N8 91.273
C6 C5 H13 134.300 C6 C7 N8 88.727
C7 C1 H9 123.666 C7 C6 H14 134.427
N8 C4 H12 123.666 N8 C5 H13 134.427
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.163      
2 C -0.059      
3 C -0.059      
4 C -0.163      
5 C -0.172      
6 C -0.172      
7 C -0.025      
8 C -0.025      
9 H 0.138      
10 H 0.133      
11 H 0.133      
12 H 0.138      
13 H 0.148      
14 H 0.148      


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 0.650 0.650
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.332 0.000 0.000
y 0.000 -41.369 0.000
z 0.000 0.000 -41.134
Traceless
 xyz
x -10.081 0.000 0.000
y 0.000 4.864 0.000
z 0.000 0.000 5.217
Polar
3z2-r210.433
x2-y2-9.963
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.643 0.000 0.000
y 0.000 14.706 0.000
z 0.000 0.000 18.268


<r2> (average value of r2) Å2
<r2> 223.682
(<r2>)1/2 14.956