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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: B97D3/TZVP

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/TZVP
 hartrees
Energy at 0K-308.245146
Energy at 298.15K-308.250543
HF Energy-308.245146
Nuclear repulsion energy311.388378
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/TZVP
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 3184 3138 14.14      
2 A1 3143 3098 19.41      
3 A1 3127 3082 9.35      
4 A1 1652 1629 2.28      
5 A1 1514 1492 3.86      
6 A1 1462 1441 1.66      
7 A1 1405 1385 8.96      
8 A1 1171 1154 0.00      
9 A1 1068 1052 0.00      
10 A1 1041 1026 0.89      
11 A1 961 948 4.51      
12 A1 796 784 0.19      
13 A1 540 532 0.22      
14 A2 901 888 0.00      
15 A2 877 865 0.00      
16 A2 838 826 0.00      
17 A2 735 724 0.00      
18 A2 547 539 0.00      
19 A2 285 281 0.00      
20 B1 866 854 9.18      
21 B1 716 706 110.13      
22 B1 686 677 2.24      
23 B1 345 340 1.83      
24 B1 209 206 11.97      
25 B2 3155 3109 3.42      
26 B2 3134 3089 38.93      
27 B2 3116 3071 0.11      
28 B2 1601 1578 0.12      
29 B2 1428 1408 3.60      
30 B2 1278 1260 1.93      
31 B2 1223 1205 13.92      
32 B2 1073 1057 2.76      
33 B2 1030 1015 0.96      
34 B2 857 845 0.21      
35 B2 650 640 0.73      
36 B2 403 397 4.10      

Unscaled Zero Point Vibrational Energy (zpe) 23508.0 cm-1
Scaled (by 0.9856) Zero Point Vibrational Energy (zpe) 23169.5 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/TZVP
ABC
0.16045 0.07266 0.05001

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.446 -0.626
C2 0.000 0.690 -1.849
C3 0.000 -0.690 -1.849
C4 0.000 -1.446 -0.626
C5 0.000 -0.679 2.054
C6 0.000 0.679 2.054
C7 0.000 0.714 0.524
C8 0.000 -0.714 0.524
H9 0.000 2.533 -0.648
H10 0.000 1.225 -2.796
H11 0.000 -1.225 -2.796
H12 0.000 -2.533 -0.648
H13 0.000 -1.435 2.832
H14 0.000 1.435 2.832

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.43742.46172.89283.42062.78771.36342.44771.08722.18073.44113.97994.50123.4585
C21.43741.38052.46174.13583.90252.37282.75722.19981.08742.13643.44005.14064.7398
C32.46171.38051.43743.90254.13582.75722.37283.44002.13641.08742.19984.73985.1406
C42.89282.46171.43742.78773.42062.44771.36343.97993.44112.18071.08723.45854.5012
C53.42064.13583.90252.78771.35822.06931.53034.19765.20984.88013.27691.08472.2524
C62.78773.90254.13583.42061.35821.53032.06933.27694.88015.20984.19762.25241.0847
C71.36342.37282.75722.44772.06931.53031.42862.16393.35863.84443.45273.15372.4181
C82.44772.75722.37281.36341.53032.06931.42863.45273.84443.35862.16392.41813.1537
H91.08722.19983.44003.97994.19763.27692.16393.45272.51504.32865.06685.27793.6496
H102.18071.08742.13643.44115.20984.88013.35863.84442.51502.44954.32866.22455.6318
H113.44112.13641.08742.18074.88015.20983.84443.35864.32862.44952.51505.63186.2245
H123.97993.44002.19981.08723.27694.19763.45272.16395.06684.32862.51503.64965.2779
H134.50125.14064.73983.45851.08472.25243.15372.41815.27796.22455.63183.64962.8691
H143.45854.73985.14064.50122.25241.08472.41813.15373.64965.63186.22455.27792.8691

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.738 C1 C2 H10 118.818
C1 C7 C6 148.840 C1 C7 N8 122.478
C2 C1 C7 115.784 C2 C1 H9 120.593
C2 C3 C4 121.738 C2 C3 H11 119.443
C3 C2 H10 119.443 C3 C4 N8 115.784
C3 C4 H12 120.593 C4 C3 H11 118.818
C4 N8 C5 148.840 C4 N8 C7 122.478
C5 C6 C7 91.318 C5 C6 H14 134.142
C5 N8 C7 88.682 C6 C5 N8 91.318
C6 C5 H13 134.142 C6 C7 N8 88.682
C7 C1 H9 123.623 C7 C6 H14 134.540
N8 C4 H12 123.623 N8 C5 H13 134.540
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.127      
2 C -0.090      
3 C -0.090      
4 C -0.127      
5 C -0.172      
6 C -0.172      
7 C 0.119      
8 C 0.119      
9 H 0.088      
10 H 0.085      
11 H 0.085      
12 H 0.088      
13 H 0.098      
14 H 0.098      


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 0.643 0.643
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.832 0.000 0.000
y 0.000 -41.269 0.000
z 0.000 0.000 -40.800
Traceless
 xyz
x -9.797 0.000 0.000
y 0.000 4.547 0.000
z 0.000 0.000 5.250
Polar
3z2-r210.501
x2-y2-9.562
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.942 0.000 0.000
y 0.000 14.267 0.000
z 0.000 0.000 17.599


<r2> (average value of r2) Å2
<r2> 222.245
(<r2>)1/2 14.908