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 (Dewar Benzene)

using model chemistry: B2PLYP=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B2PLYP=FULL/6-31+G**
 hartrees
Energy at 0K-231.884429
Energy at 298.15K 
HF Energy-231.605665
Nuclear repulsion energy208.538129
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 B2PLYP=FULL/6-31+G**
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 3256 3097 9.05 300.98 0.04 0.07
2 A1 3147 2993 29.99 162.81 0.11 0.20
3 A1 1619 1540 0.25 54.97 0.01 0.02
4 A1 1189 1131 4.90 30.57 0.11 0.20
5 A1 1050 999 1.87 8.50 0.60 0.75
6 A1 960 913 8.32 10.48 0.25 0.40
7 A1 875 832 0.28 4.56 0.59 0.74
8 A1 818 778 90.29 5.39 0.02 0.04
9 A1 392 373 6.33 4.87 0.52 0.68
10 A2 3224 3066 0.00 175.54 0.75 0.86
11 A2 1308 1244 0.00 6.53 0.75 0.86
12 A2 1221 1161 0.00 10.11 0.75 0.86
13 A2 970 923 0.00 0.65 0.75 0.86
14 A2 923 878 0.00 2.31 0.75 0.86
15 A2 788 749 0.00 2.64 0.75 0.86
16 A2 332 315 0.00 1.23 0.75 0.86
17 B1 3254 3094 41.90 78.01 0.75 0.86
18 B1 1593 1515 14.43 0.01 0.75 0.86
19 B1 1230 1169 2.84 1.76 0.75 0.86
20 B1 1116 1061 0.50 0.00 0.75 0.86
21 B1 1018 968 0.17 6.99 0.75 0.86
22 B1 724 689 53.13 1.44 0.75 0.86
23 B2 3226 3068 26.62 49.91 0.75 0.86
24 B2 3141 2987 17.26 125.03 0.75 0.86
25 B2 1318 1253 36.60 0.02 0.75 0.86
26 B2 1178 1120 7.80 0.25 0.75 0.86
27 B2 956 909 5.20 1.69 0.75 0.86
28 B2 932 887 5.86 0.96 0.75 0.86
29 B2 840 798 10.07 0.30 0.75 0.86
30 B2 489 465 4.86 3.37 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21543.0 cm-1
Scaled (by 0.951) Zero Point Vibrational Energy (zpe) 20487.4 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 B2PLYP=FULL/6-31+G**
ABC
0.26082 0.14909 0.11603

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.787 0.522
C2 0.000 -0.787 0.522
H3 0.000 1.351 1.456
H4 0.000 -1.351 1.456
C5 -1.304 0.673 -0.264
C6 1.304 0.673 -0.264
C7 1.304 -0.673 -0.264
C8 -1.304 -0.673 -0.264
H9 -1.947 1.421 -0.710
H10 1.947 1.421 -0.710
H11 1.947 -1.421 -0.710
H12 -1.947 -1.421 -0.710

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57461.09042.33281.52691.52692.10962.10962.39022.39023.19203.1920
C21.57462.33281.09042.10962.10961.52691.52693.19203.19202.39022.3902
H31.09042.33282.70112.26232.26232.95852.95852.91362.91364.02084.0208
H42.33281.09042.70112.95852.95852.26232.26234.02084.02082.91362.9136
C51.52692.10962.26232.95852.60722.93411.34581.08313.36573.89272.2357
C61.52692.10962.26232.95852.60721.34582.93413.36571.08312.23573.8927
C72.10961.52692.95852.26232.93411.34582.60723.89272.23571.08313.3657
C82.10961.52692.95852.26231.34582.93412.60722.23573.89273.36571.0831
H92.39023.19202.91364.02081.08313.36573.89272.23573.89494.82182.8424
H102.39023.19202.91364.02083.36571.08312.23573.89273.89492.84244.8218
H113.19202.39024.02082.91363.89272.23571.08313.36574.82182.84243.8949
H123.19202.39024.02082.91362.23573.89273.36571.08312.84244.82183.8949

picture of Dewar Benzene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C4 121.102 C1 C2 H7 85.702
C1 C2 H8 85.702 C1 C5 H8 94.298
C1 C5 H9 131.893 C1 C6 H7 94.298
C1 C6 H10 131.893 C2 C1 C3 121.102
C2 C1 C5 85.702 C2 C1 C6 85.702
C2 H7 C6 94.298 C2 H7 H11 131.893
C2 H8 C5 94.298 C2 H8 H12 131.893
C3 C1 C5 118.676 C3 C1 C6 118.676
C4 C2 H7 118.676 C4 C2 H8 118.676
C5 C1 C6 117.252 C5 H8 H12 133.701
C6 H7 H11 133.701 H7 C6 H10 133.701
H8 C5 H9 133.701
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability