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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-231.505084
Energy at 298.15K 
HF Energy-230.588844
Nuclear repulsion energy208.986549
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 MP2/6-31G(2df,p)
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 3275 3093 5.46 245.44 0.03 0.06
2 A1 3178 3002 17.73 124.91 0.13 0.23
3 A1 1592 1504 0.14 14.69 0.03 0.05
4 A1 1186 1120 4.42 17.40 0.18 0.31
5 A1 1042 984 2.77 11.65 0.74 0.85
6 A1 971 917 3.01 12.24 0.21 0.35
7 A1 887 838 0.50 6.04 0.70 0.83
8 A1 829 783 60.72 5.10 0.11 0.20
9 A1 392 370 3.12 9.46 0.64 0.78
10 A2 3242 3062 0.00 140.94 0.75 0.86
11 A2 1298 1226 0.00 4.13 0.75 0.86
12 A2 1198 1131 0.00 10.55 0.75 0.86
13 A2 981 927 0.00 0.16 0.75 0.86
14 A2 926 875 0.00 0.03 0.75 0.86
15 A2 782 739 0.00 2.81 0.75 0.86
16 A2 325 307 0.00 2.09 0.75 0.86
17 B1 3273 3091 28.90 53.43 0.75 0.86
18 B1 1568 1481 6.36 1.51 0.75 0.86
19 B1 1218 1150 2.31 2.15 0.75 0.86
20 B1 1115 1053 0.08 0.04 0.75 0.86
21 B1 1029 972 0.08 8.51 0.75 0.86
22 B1 733 693 39.54 3.52 0.75 0.86
23 B2 3243 3063 13.78 39.09 0.75 0.86
24 B2 3172 2996 9.01 97.79 0.75 0.86
25 B2 1303 1231 33.47 0.03 0.75 0.86
26 B2 1158 1094 2.99 0.79 0.75 0.86
27 B2 956 903 5.63 0.03 0.75 0.86
28 B2 919 868 7.06 0.28 0.75 0.86
29 B2 843 796 6.15 1.81 0.75 0.86
30 B2 486 459 5.24 5.24 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 21558.3 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 20361.8 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 MP2/6-31G(2df,p)
ABC
0.25971 0.15066 0.11717

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.787 0.528
C2 0.000 -0.787 0.528
H3 0.000 1.349 1.461
H4 0.000 -1.349 1.461
C5 -1.294 0.673 -0.266
C6 1.294 0.673 -0.266
C7 1.294 -0.673 -0.266
C8 -1.294 -0.673 -0.266
H9 -1.931 1.423 -0.719
H10 1.931 1.423 -0.719
H11 1.931 -1.423 -0.719
H12 -1.931 -1.423 -0.719

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57351.08932.33091.52241.52242.10642.10642.38452.38453.18803.1880
C21.57352.33091.08932.10642.10641.52241.52243.18803.18802.38452.3845
H31.08932.33092.69892.26112.26112.95762.95762.91242.91244.02014.0201
H42.33091.08932.69892.95762.95762.26112.26114.02014.02012.91242.9124
C51.52242.10642.26112.95762.58852.91781.34671.08243.34173.87282.2368
C61.52242.10642.26112.95762.58851.34672.91783.34171.08242.23683.8728
C72.10641.52242.95762.26112.91781.34672.58853.87282.23681.08243.3417
C82.10641.52242.95762.26111.34672.91782.58852.23683.87283.34171.0824
H92.38453.18802.91244.02011.08243.34173.87282.23683.86144.79652.8453
H102.38453.18802.91244.02013.34171.08242.23683.87283.86142.84534.7965
H113.18802.38454.02012.91243.87282.23681.08243.34174.79652.84533.8614
H123.18802.38454.02012.91242.23683.87283.34171.08242.84534.79653.8614

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 121.105 C1 C2 H7 85.729
C1 C2 H8 85.729 C1 C5 H8 94.271
C1 C5 H9 131.792 C1 C6 H7 94.271
C1 C6 H10 131.792 C2 C1 C3 121.105
C2 C1 C5 85.729 C2 C1 C6 85.729
C2 H7 C6 94.271 C2 H7 H11 131.792
C2 H8 C5 94.271 C2 H8 H12 131.792
C3 C1 C5 119.003 C3 C1 C6 119.003
C4 C2 H7 119.003 C4 C2 H8 119.003
C5 C1 C6 116.444 C5 H8 H12 133.808
C6 H7 H11 133.808 H7 C6 H10 133.808
H8 C5 H9 133.808
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability