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

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-229.800498
Energy at 298.15K 
HF Energy-229.263772
Nuclear repulsion energy205.593844
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 MP2/3-21G*
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 3273 3114 4.88 220.93 0.02 0.04
2 A1 3208 3052 17.18 94.97 0.21 0.34
3 A1 1546 1471 0.08 8.85 0.03 0.06
4 A1 1169 1112 3.51 18.15 0.29 0.45
5 A1 1059 1008 5.20 12.54 0.69 0.82
6 A1 936 890 14.55 11.46 0.25 0.39
7 A1 824 784 57.63 9.99 0.23 0.37
8 A1 794 755 11.41 4.93 0.50 0.67
9 A1 394 375 3.78 12.77 0.66 0.79
10 A2 3234 3076 0.00 124.89 0.75 0.86
11 A2 1307 1244 0.00 0.67 0.75 0.86
12 A2 1246 1185 0.00 12.30 0.75 0.86
13 A2 918 873 0.00 0.06 0.75 0.86
14 A2 896 853 0.00 0.00 0.75 0.86
15 A2 787 749 0.00 5.13 0.75 0.86
16 A2 346 329 0.00 3.15 0.75 0.86
17 B1 3269 3110 32.36 48.61 0.75 0.86
18 B1 1525 1451 5.36 1.91 0.75 0.86
19 B1 1245 1185 0.30 4.74 0.75 0.86
20 B1 1127 1072 0.06 0.86 0.75 0.86
21 B1 971 923 2.95 8.55 0.75 0.86
22 B1 745 708 58.66 2.88 0.75 0.86
23 B2 3236 3078 18.60 33.89 0.75 0.86
24 B2 3199 3043 5.79 98.71 0.75 0.86
25 B2 1325 1260 29.60 0.02 0.75 0.86
26 B2 1149 1093 11.98 1.34 0.75 0.86
27 B2 963 916 8.64 0.06 0.75 0.86
28 B2 905 861 0.46 0.03 0.75 0.86
29 B2 821 781 4.36 2.61 0.75 0.86
30 B2 489 465 5.30 7.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21451.4 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 20406.7 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 MP2/3-21G*
ABC
0.24712 0.14676 0.11445

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

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 1.484
H4 0.000 -1.391 1.484
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 1.421 -0.753
H10 1.934 1.421 -0.753
H11 1.934 -1.421 -0.753
H12 -1.934 -1.421 -0.753

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.63941.08752.39661.55691.55692.15682.15682.41312.41313.23743.2374
C21.63942.39661.08752.15682.15681.55691.55693.23743.23742.41312.4131
H31.08752.39662.78222.30502.30503.01563.01562.95732.95734.08054.0805
H42.39661.08752.78223.01563.01562.30502.30504.08054.08052.95732.9573
C51.55692.15682.30503.01562.61232.94461.35891.08193.35813.89082.2431
C61.55692.15682.30503.01562.61231.35892.94463.35811.08192.24313.8908
C72.15681.55693.01562.30502.94461.35892.61233.89082.24311.08193.3581
C82.15681.55693.01562.30501.35892.94462.61232.24313.89083.35811.0819
H92.41313.23742.95734.08051.08193.35813.89082.24313.86884.80012.8413
H102.41313.23742.95734.08053.35811.08192.24313.89083.86882.84134.8001
H113.23742.41314.08052.95733.89082.24311.08193.35814.80012.84133.8688
H123.23742.41314.08052.95732.24313.89083.35811.08192.84134.80013.8688

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 121.694 C1 C2 H7 84.831
C1 C2 H8 84.831 C1 C5 H8 95.169
C1 C5 H9 131.416 C1 C6 H7 95.169
C1 C6 H10 131.416 C2 C1 C3 121.694
C2 C1 C5 84.831 C2 C1 C6 84.831
C2 H7 C6 95.169 C2 H7 H11 131.416
C2 H8 C5 95.169 C2 H8 H12 131.416
C3 C1 C5 120.264 C3 C1 C6 120.264
C4 C2 H7 120.264 C4 C2 H8 120.264
C5 C1 C6 114.060 C5 H8 H12 133.241
C6 H7 H11 133.241 H7 C6 H10 133.241
H8 C5 H9 133.241
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability