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All results from a given calculation for C6H6 (Dewar Benzene)

using model chemistry: MP2=FULL/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 MP2=FULL/3-21G*
 hartrees
Energy at 0K-229.810568
Energy at 298.15K 
HF Energy-229.263857
Nuclear repulsion energy205.634493
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 MP2=FULL/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 3274 3104 4.86 220.70 0.02 0.04
2 A1 3209 3042 17.03 94.83 0.21 0.34
3 A1 1546 1466 0.08 8.85 0.03 0.06
4 A1 1169 1108 3.53 18.14 0.29 0.45
5 A1 1060 1004 5.21 12.53 0.69 0.82
6 A1 936 887 14.47 11.45 0.25 0.39
7 A1 825 782 57.62 9.99 0.23 0.37
8 A1 794 753 11.42 4.93 0.50 0.67
9 A1 394 374 3.77 12.75 0.66 0.79
10 A2 3234 3066 0.00 124.68 0.75 0.86
11 A2 1308 1240 0.00 0.66 0.75 0.86
12 A2 1246 1181 0.00 12.30 0.75 0.86
13 A2 918 871 0.00 0.07 0.75 0.86
14 A2 897 850 0.00 0.00 0.75 0.86
15 A2 787 746 0.00 5.12 0.75 0.86
16 A2 346 328 0.00 3.15 0.75 0.86
17 B1 3270 3100 32.16 48.55 0.75 0.86
18 B1 1526 1447 5.32 1.91 0.75 0.86
19 B1 1246 1181 0.29 4.72 0.75 0.86
20 B1 1127 1069 0.06 0.86 0.75 0.86
21 B1 971 921 2.93 8.54 0.75 0.86
22 B1 745 706 58.71 2.87 0.75 0.86
23 B2 3236 3068 18.45 33.85 0.75 0.86
24 B2 3200 3033 5.73 98.61 0.75 0.86
25 B2 1325 1256 29.62 0.02 0.75 0.86
26 B2 1149 1090 12.00 1.33 0.75 0.86
27 B2 963 913 8.69 0.06 0.75 0.86
28 B2 906 859 0.44 0.03 0.75 0.86
29 B2 821 778 4.36 2.61 0.75 0.86
30 B2 489 463 5.29 7.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21457.3 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 20341.6 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 MP2=FULL/3-21G*
ABC
0.24718 0.14683 0.11451

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.820 0.558
C2 0.000 -0.820 0.558
H3 0.000 1.391 1.483
H4 0.000 -1.391 1.483
C5 -1.306 0.679 -0.277
C6 1.306 0.679 -0.277
C7 1.306 -0.679 -0.277
C8 -1.306 -0.679 -0.277
H9 -1.934 1.420 -0.753
H10 1.934 1.420 -0.753
H11 1.934 -1.420 -0.753
H12 -1.934 -1.420 -0.753

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.63911.08742.39641.55661.55662.15632.15632.41272.41273.23693.2369
C21.63912.39641.08742.15632.15631.55661.55663.23693.23692.41272.4127
H31.08742.39642.78222.30472.30473.01523.01522.95682.95684.08004.0800
H42.39641.08742.78223.01523.01522.30472.30474.08004.08002.95682.9568
C51.55662.15632.30473.01522.61152.94381.35861.08183.35723.88982.2427
C61.55662.15632.30473.01522.61151.35862.94383.35721.08182.24273.8898
C72.15631.55663.01522.30472.94381.35862.61153.88982.24271.08183.3572
C82.15631.55663.01522.30471.35862.94382.61152.24273.88983.35721.0818
H92.41273.23692.95684.08001.08183.35723.88982.24273.86794.79902.8408
H102.41273.23692.95684.08003.35721.08182.24273.88983.86792.84084.7990
H113.23692.41274.08002.95683.88982.24271.08183.35724.79902.84083.8679
H123.23692.41274.08002.95682.24273.88983.35721.08182.84084.79903.8679

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 121.711 C1 C2 H7 84.831
C1 C2 H8 84.831 C1 C5 H8 95.169
C1 C5 H9 131.418 C1 C6 H7 95.169
C1 C6 H10 131.418 C2 C1 C3 121.711
C2 C1 C5 84.831 C2 C1 C6 84.831
C2 H7 C6 95.169 C2 H7 H11 131.418
C2 H8 C5 95.169 C2 H8 H12 131.418
C3 C1 C5 120.268 C3 C1 C6 120.268
C4 C2 H7 120.268 C4 C2 H8 120.268
C5 C1 C6 114.040 C5 H8 H12 133.240
C6 H7 H11 133.240 H7 C6 H10 133.240
H8 C5 H9 133.240
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability