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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-308.288540
Energy at 298.15K-308.294153
HF Energy-308.288540
Nuclear repulsion energy313.112446
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
4/u)
Dep P Dep U
1 A1 3238 3238 6.19      
2 A1 3216 3216 9.15      
3 A1 3202 3202 9.76      
4 A1 1738 1738 3.14      
5 A1 1611 1611 0.91      
6 A1 1522 1522 3.81      
7 A1 1455 1455 12.16      
8 A1 1199 1199 0.00      
9 A1 1114 1114 0.05      
10 A1 1066 1066 0.49      
11 A1 982 982 5.16      
12 A1 830 830 0.69      
13 A1 550 550 0.14      
14 A2 983 983 0.00      
15 A2 924 924 0.00      
16 A2 891 891 0.00      
17 A2 779 779 0.00      
18 A2 584 584 0.00      
19 A2 287 287 0.00      
20 B1 930 930 9.65      
21 B1 753 753 112.56      
22 B1 702 702 14.58      
23 B1 357 357 2.77      
24 B1 225 225 16.76      
25 B2 3210 3210 19.46      
26 B2 3208 3208 2.60      
27 B2 3189 3189 0.08      
28 B2 1692 1692 0.56      
29 B2 1475 1475 4.70      
30 B2 1314 1314 4.19      
31 B2 1258 1258 13.17      
32 B2 1106 1106 1.85      
33 B2 1056 1056 0.55      
34 B2 879 879 0.71      
35 B2 656 656 0.73      
36 B2 418 418 4.25      

Unscaled Zero Point Vibrational Energy (zpe) 24299.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 24299.4 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
0.16220 0.07348 0.05057

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 1.437 -0.617
C2 0.000 0.682 -1.842
C3 0.000 -0.682 -1.842
C4 0.000 -1.437 -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 -0.645
H10 0.000 1.219 -2.784
H11 0.000 -1.219 -2.784
H12 0.000 -2.521 -0.645
H13 0.000 -1.438 2.802
H14 0.000 1.438 2.802

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.43962.44832.87473.39152.76521.35062.43601.08402.17813.42823.95854.46723.4185
C21.43961.36422.44834.11123.88232.36682.74822.19471.08392.12163.41985.10524.7052
C32.44831.36421.43963.88234.11122.74822.36683.41982.12161.08392.19474.70525.1052
C42.87472.44831.43962.76523.39152.43601.35063.95853.42822.17811.08403.41854.4672
C53.39154.11123.88232.76521.34122.05351.51644.17045.18084.85503.26041.08152.2422
C62.76523.88234.11123.39151.34121.51642.05353.26044.85505.18084.17042.24221.0815
C71.35062.36682.74822.43602.05351.51641.42972.15133.34643.83203.44043.13412.3896
C82.43602.74822.36681.35061.51642.05351.42973.44043.83203.34642.15132.38963.1341
H91.08402.19473.41983.95854.17043.26042.15133.44042.50454.30885.04205.24903.6123
H102.17811.08392.12163.42825.18084.85503.34643.83202.50452.43814.30886.18555.5899
H113.42822.12161.08392.17814.85505.18083.83203.34644.30882.43812.50455.58996.1855
H123.95853.41982.19471.08403.26044.17043.44042.15135.04204.30882.50453.61235.2490
H134.46725.10524.70523.41851.08152.24223.13412.38965.24906.18555.58993.61232.8765
H143.41854.70525.10524.46722.24221.08152.38963.13413.61235.58996.18555.24902.8765

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.643 C1 C2 H10 118.663
C1 C7 C6 149.330 C1 C7 N8 122.341
C2 C1 C7 116.016 C2 C1 H9 120.182
C2 C3 C4 121.643 C2 C3 H11 119.694
C3 C2 H10 119.694 C3 C4 N8 116.016
C3 C4 H12 120.182 C4 C3 H11 118.663
C4 N8 C5 149.330 C4 N8 C7 122.341
C5 C6 C7 91.671 C5 C6 H14 135.221
C5 N8 C7 88.329 C6 C5 N8 91.671
C6 C5 H13 135.221 C6 C7 N8 88.329
C7 C1 H9 123.802 C7 C6 H14 133.108
N8 C4 H12 123.802 N8 C5 H13 133.108
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 -0.239      
2 C -0.233      
3 C -0.233      
4 C -0.239      
5 C -0.212      
6 C -0.212      
7 C 0.009      
8 C 0.009      
9 H 0.226      
10 H 0.220      
11 H 0.220      
12 H 0.226      
13 H 0.229      
14 H 0.229      


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 0.678 0.678
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -51.443 0.000 0.000
y 0.000 -40.624 0.000
z 0.000 0.000 -39.894
Traceless
 xyz
x -11.184 0.000 0.000
y 0.000 5.044 0.000
z 0.000 0.000 6.139
Polar
3z2-r212.279
x2-y2-10.819
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.125 0.000 0.000
y 0.000 13.272 0.000
z 0.000 0.000 15.826


<r2> (average value of r2) Å2
<r2> 219.937
(<r2>)1/2 14.830