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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: M06-2X/3-21G

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/3-21G
 hartrees
Energy at 0K-306.516181
Energy at 298.15K-306.521924
HF Energy-306.516181
Nuclear repulsion energy311.062426
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/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 3245 3111 3.07      
2 A1 3228 3095 4.24      
3 A1 3213 3080 5.66      
4 A1 1723 1652 2.09      
5 A1 1578 1512 0.39      
6 A1 1496 1434 0.24      
7 A1 1453 1393 18.99      
8 A1 1239 1188 0.02      
9 A1 1093 1048 0.11      
10 A1 1072 1028 0.07      
11 A1 964 924 2.27      
12 A1 813 779 0.23      
13 A1 556 533 0.02      
14 A2 1044 1001 0.00      
15 A2 966 926 0.00      
16 A2 937 898 0.00      
17 A2 806 773 0.00      
18 A2 602 577 0.00      
19 A2 295 283 0.00      
20 B1 986 945 12.79      
21 B1 784 752 123.00      
22 B1 731 700 18.75      
23 B1 378 362 4.84      
24 B1 230 220 17.76      
25 B2 3221 3088 7.35      
26 B2 3212 3079 0.37      
27 B2 3200 3068 0.12      
28 B2 1682 1613 0.23      
29 B2 1487 1426 8.48      
30 B2 1344 1289 0.37      
31 B2 1260 1208 14.42      
32 B2 1111 1065 1.81      
33 B2 1074 1030 1.56      
34 B2 880 844 0.04      
35 B2 680 652 0.37      
36 B2 403 386 4.50      

Unscaled Zero Point Vibrational Energy (zpe) 24491.7 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 23480.2 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/3-21G
ABC
0.16061 0.07223 0.04982

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.445 -0.623
C2 0.000 0.685 -1.854
C3 0.000 -0.685 -1.854
C4 0.000 -1.445 -0.623
C5 0.000 -0.677 2.062
C6 0.000 0.677 2.062
C7 0.000 0.723 0.521
C8 0.000 -0.723 0.521
H9 0.000 2.527 -0.652
H10 0.000 1.223 -2.795
H11 0.000 -1.223 -2.795
H12 0.000 -2.527 -0.652
H13 0.000 -1.443 2.818
H14 0.000 1.443 2.818

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.44702.46032.89003.42202.79241.35242.45141.08262.18283.44013.97244.49243.4413
C21.44701.36992.46034.14603.91602.37532.76112.20001.08342.12723.42995.13424.7336
C32.46031.36991.44703.91604.14602.76112.37533.42992.12721.08342.20004.73365.1342
C42.89002.46031.44702.79243.42202.45141.35243.97243.44012.18281.08263.44134.4924
C53.42204.14603.91602.79241.35382.08211.54174.19885.21474.88683.28441.07652.2506
C62.79243.91604.14603.42201.35381.54172.08213.28444.88685.21474.19882.25061.0765
C71.35242.37532.76112.45142.08211.54171.44652.15163.35273.84443.45563.15762.4075
C82.45142.76112.37531.35241.54172.08211.44653.45563.84443.35272.15162.40753.1576
H91.08262.20003.42993.97244.19883.28442.15163.45562.50834.31945.05455.27283.6356
H102.18281.08342.12723.44015.21474.88683.35273.84442.50832.44644.31946.21375.6170
H113.44012.12721.08342.18284.88685.21473.84443.35274.31942.44642.50835.61706.2137
H123.97243.42992.20001.08263.28444.19883.45562.15165.05454.31942.50833.63565.2728
H134.49245.13424.73363.44131.07652.25063.15762.40755.27286.21375.61703.63562.8855
H143.44134.73365.13424.49242.25061.07652.40753.15763.63565.61706.21375.27282.8855

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.686 C1 C2 H10 118.524
C1 C7 C6 149.471 C1 C7 N8 122.253
C2 C1 C7 116.061 C2 C1 H9 120.159
C2 C3 C4 121.686 C2 C3 H11 119.790
C3 C2 H10 119.790 C3 C4 N8 116.061
C3 C4 H12 120.159 C4 C3 H11 118.524
C4 N8 C5 149.471 C4 N8 C7 122.253
C5 C6 C7 91.724 C5 C6 H14 135.351
C5 N8 C7 88.276 C6 C5 N8 91.724
C6 C5 H13 135.351 C6 C7 N8 88.276
C7 C1 H9 123.780 C7 C6 H14 132.925
N8 C4 H12 123.780 N8 C5 H13 132.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.272      
2 C -0.205      
3 C -0.205      
4 C -0.272      
5 C -0.146      
6 C -0.146      
7 C -0.009      
8 C -0.009      
9 H 0.211      
10 H 0.209      
11 H 0.209      
12 H 0.211      
13 H 0.212      
14 H 0.212      


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 0.508 0.508
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -52.080 0.000 0.000
y 0.000 -40.368 0.000
z 0.000 0.000 -39.185
Traceless
 xyz
x -12.304 0.000 0.000
y 0.000 5.265 0.000
z 0.000 0.000 7.039
Polar
3z2-r214.078
x2-y2-11.712
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.961 0.000 0.000
y 0.000 12.214 0.000
z 0.000 0.000 14.341


<r2> (average value of r2) Å2
<r2> 222.582
(<r2>)1/2 14.919