return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C6H6 (Benzvalene)

using model chemistry: HF/CEP-121G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at HF/CEP-121G*
 hartrees
Energy at 0K-36.299325
Energy at 298.15K-36.306093
HF Energy-36.299325
Nuclear repulsion energy108.447986
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 HF/CEP-121G*
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 3404 3075 13.56      
2 A1 3386 3059 17.55      
3 A1 3344 3021 2.94      
4 A1 1742 1574 9.70      
5 A1 1531 1383 0.99      
6 A1 1279 1155 2.65      
7 A1 1201 1085 2.56      
8 A1 1052 951 0.07      
9 A1 981 887 0.42      
10 A1 832 752 5.93      
11 A1 757 684 3.91      
12 A2 1232 1113 0.00      
13 A2 1040 939 0.00      
14 A2 997 900 0.00      
15 A2 873 789 0.00      
16 A2 579 523 0.00      
17 B1 3367 3042 18.16      
18 B1 1246 1126 18.64      
19 B1 1110 1002 0.98      
20 B1 846 765 136.96      
21 B1 720 651 0.06      
22 B1 550 497 12.80      
23 B2 3378 3052 16.73      
24 B2 3345 3022 50.38      
25 B2 1461 1320 4.98      
26 B2 1389 1255 3.63      
27 B2 1321 1193 0.49      
28 B2 1060 958 0.00      
29 B2 917 829 5.45      
30 B2 879 794 10.68      

Unscaled Zero Point Vibrational Energy (zpe) 22908.7 cm-1
Scaled (by 0.9034) Zero Point Vibrational Energy (zpe) 20695.7 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 HF/CEP-121G*
ABC
0.24958 0.17549 0.13004

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.723 0.000 -1.011
C2 -0.723 0.000 -1.011
C3 0.000 1.070 -0.208
C4 0.000 -1.070 -0.208
C5 0.000 0.664 1.255
C6 0.000 -0.664 1.255
H7 1.486 0.000 -1.768
H8 -1.486 0.000 -1.768
H9 0.000 2.097 -0.536
H10 0.000 -2.097 -0.536
H11 0.000 1.340 2.091
H12 0.000 -1.340 2.091

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12
C11.44521.52071.52072.46982.46981.07472.33452.26822.26823.45563.4556
C21.44521.52071.52072.46982.46982.33451.07472.26822.26823.45563.4556
C31.52071.52072.14041.51842.26922.40542.40541.07763.18382.31473.3310
C41.52071.52072.14042.26921.51842.40542.40543.18381.07763.33102.3147
C52.46982.46981.51842.26921.32863.43333.43332.29313.29091.07492.1718
C62.46982.46982.26921.51841.32863.43333.43333.29092.29312.17181.0749
H71.07472.33452.40542.40543.43333.43332.97192.85012.85014.34664.3466
H82.33451.07472.40542.40543.43333.43332.97192.85012.85014.34664.3466
H92.26822.26821.07763.18382.29313.29092.85012.85014.19352.73324.3257
H102.26822.26823.18381.07763.29092.29312.85012.85014.19354.32572.7332
H113.45563.45562.31473.33101.07492.17184.34664.34662.73324.32572.6806
H123.45563.45563.33102.31472.17181.07494.34664.34664.32572.73322.6806

picture of Benzvalene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 61.629 C1 C2 C4 61.629
C1 C2 H8 135.255 C1 C3 C2 56.743
C1 C3 C5 108.713 C1 C3 H9 120.659
C1 C4 C2 56.743 C1 C4 C6 108.713
C1 C4 H10 120.659 C2 C1 C3 61.629
C2 C1 C4 61.629 C2 C1 H7 135.255
C2 C3 C5 108.713 C2 C3 H9 120.659
C2 C4 C6 108.713 C2 C4 H10 120.659
C3 C1 C4 89.456 C3 C1 H7 135.178
C3 C2 C4 89.456 C3 C2 H8 135.178
C3 C5 C6 105.503 C3 C5 H11 125.528
C4 C1 H7 135.178 C4 C2 H8 135.178
C4 C6 C5 105.503 C4 C6 H12 125.528
C5 C3 H9 123.197 C5 C6 H12 128.968
C6 C4 H10 123.197 C6 C5 H11 128.968
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.199      
2 C -0.199      
3 C -0.221      
4 C -0.221      
5 C -0.308      
6 C -0.308      
7 H 0.256      
8 H 0.256      
9 H 0.237      
10 H 0.237      
11 H 0.236      
12 H 0.236      


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 -0.911 0.911
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.823 0.000 0.000
y 0.000 -32.325 0.000
z 0.000 0.000 -33.288
Traceless
 xyz
x -5.016 0.000 0.000
y 0.000 3.230 0.000
z 0.000 0.000 1.786
Polar
3z2-r23.572
x2-y2-5.497
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.530 0.000 0.000
y 0.000 9.088 0.000
z 0.000 0.000 8.598


<r2> (average value of r2) Å2
<r2> 91.903
(<r2>)1/2 9.587