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All results from a given calculation for C8H6 (benzocyclobutadiene)

using model chemistry: TPSSh/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at TPSSh/cc-pVTZ
 hartrees
Energy at 0K-308.490136
Energy at 298.15K-308.495779
HF Energy-308.490136
Nuclear repulsion energy312.925848
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 TPSSh/cc-pVTZ
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 3225 3123 13.80      
2 A1 3185 3084 17.56      
3 A1 3168 3068 10.12      
4 A1 1694 1641 2.75      
5 A1 1565 1515 2.24      
6 A1 1494 1447 2.67      
7 A1 1442 1397 8.48      
8 A1 1187 1149 0.06      
9 A1 1103 1068 0.16      
10 A1 1072 1038 0.32      
11 A1 979 948 4.55      
12 A1 813 787 0.40      
13 A1 543 526 0.24      
14 A2 974 943 0.00      
15 A2 921 892 0.00      
16 A2 882 854 0.00      
17 A2 777 752 0.00      
18 A2 584 565 0.00      
19 A2 294 284 0.00      
20 B1 921 892 7.23      
21 B1 752 728 103.37      
22 B1 724 701 0.14      
23 B1 357 345 2.64      
24 B1 230 223 11.70      
25 B2 3195 3094 3.32      
26 B2 3177 3076 36.79      
27 B2 3156 3056 0.01      
28 B2 1641 1589 0.24      
29 B2 1462 1415 3.94      
30 B2 1309 1267 3.73      
31 B2 1259 1219 12.80      
32 B2 1095 1060 2.44      
33 B2 1052 1019 0.86      
34 B2 871 844 0.44      
35 B2 649 628 0.78      
36 B2 417 404 4.00      

Unscaled Zero Point Vibrational Energy (zpe) 24083.8 cm-1
Scaled (by 0.9683) Zero Point Vibrational Energy (zpe) 23320.4 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 TPSSh/cc-pVTZ
ABC
0.16173 0.07349 0.05053

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.445 -0.619
C2 0.000 0.685 -1.841
C3 0.000 -0.685 -1.841
C4 0.000 -1.445 -0.619
C5 0.000 -0.674 2.040
C6 0.000 0.674 2.040
C7 0.000 0.714 0.522
C8 0.000 -0.714 0.522
H9 0.000 2.528 -0.647
H10 0.000 1.221 -2.783
H11 0.000 -1.221 -2.783
H12 0.000 -2.528 -0.647
H13 0.000 -1.431 2.812
H14 0.000 1.431 2.812

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 C7 C8 H9 H10 H11 H12 H13 H14
C11.43912.45572.88923.39972.76851.35462.44171.08382.17563.43383.97274.47663.4305
C21.43911.37042.45574.11253.88152.36342.74642.19581.08362.12653.42795.11174.7124
C32.45571.37041.43913.88154.11252.74642.36343.42792.12651.08362.19584.71245.1117
C42.88922.45571.43912.76853.39972.44171.35463.97273.43382.17561.08383.43054.4766
C53.39974.11253.88152.76851.34742.05711.51884.18025.18214.85413.26521.08132.2421
C62.76853.88154.11253.39971.34741.51882.05713.26524.85415.18214.18022.24211.0813
C71.35462.36342.74642.44172.05711.51881.42842.15813.34353.83003.44663.13792.3994
C82.44172.74642.36341.35461.51882.05711.42843.44663.83003.34352.15812.39943.1379
H91.08382.19583.42793.97274.18023.26522.15813.44662.50354.31505.05615.25763.6286
H102.17561.08362.12653.43385.18214.85413.34353.83002.50352.44294.31506.19175.5985
H113.43382.12651.08362.17564.85415.18213.83003.34354.31502.44292.50355.59856.1917
H123.97273.42792.19581.08383.26524.18023.44662.15815.05614.31502.50353.62865.2576
H134.47665.11174.71243.43051.08132.24213.13792.39945.25766.19175.59853.62862.8630
H143.43054.71245.11174.47662.24211.08132.39943.13793.62865.59856.19175.25762.8630

picture of benzocyclobutadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 121.850 C1 C2 H10 118.488
C1 C7 C6 148.895 C1 C7 N8 122.632
C2 C1 C7 115.518 C2 C1 H9 120.341
C2 C3 C4 121.850 C2 C3 H11 119.662
C3 C2 H10 119.662 C3 C4 N8 115.518
C3 C4 H12 120.341 C4 C3 H11 118.488
C4 N8 C5 148.895 C4 N8 C7 122.632
C5 C6 C7 91.527 C5 C6 H14 134.489
C5 N8 C7 88.473 C6 C5 N8 91.527
C6 C5 H13 134.489 C6 C7 N8 88.473
C7 C1 H9 124.140 C7 C6 H14 133.984
N8 C4 H12 124.140 N8 C5 H13 133.984
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.115      
2 C -0.094      
3 C -0.094      
4 C -0.115      
5 C -0.133      
6 C -0.133      
7 C 0.074      
8 C 0.074      
9 H 0.080      
10 H 0.090      
11 H 0.090      
12 H 0.080      
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 0.712 0.712
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.273 0.000 0.000
y 0.000 14.000 0.000
z 0.000 0.000 17.288


<r2> (average value of r2) Å2
<r2> 220.057
(<r2>)1/2 14.834