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

using model chemistry: QCISD/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at QCISD/cc-pVDZ
 hartrees
Energy at 0K-231.424287
Energy at 298.15K 
HF Energy-230.581396
Nuclear repulsion energy206.922659
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 QCISD/cc-pVDZ
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 3242 3110 6.60      
2 A1 3142 3014 34.52      
3 A1 1628 1562 0.06      
4 A1 1189 1141 3.67      
5 A1 1043 1001 1.11      
6 A1 962 923 6.61      
7 A1 868 833 0.01      
8 A1 813 780 66.54      
9 A1 388 373 3.81      
10 A2 3208 3078 0.00      
11 A2 1316 1262 0.00      
12 A2 1201 1153 0.00      
13 A2 965 926 0.00      
14 A2 913 876 0.00      
15 A2 788 756 0.00      
16 A2 324 310 0.00      
17 B1 3239 3108 36.87      
18 B1 1604 1539 6.58      
19 B1 1238 1188 3.96      
20 B1 1104 1060 0.05      
21 B1 1012 971 0.27      
22 B1 720 691 37.67      
23 B2 3209 3079 22.55      
24 B2 3134 3006 17.10      
25 B2 1306 1253 32.57      
26 B2 1162 1115 4.73      
27 B2 948 910 6.99      
28 B2 924 886 1.80      
29 B2 842 807 8.62      
30 B2 494 474 5.40      

Unscaled Zero Point Vibrational Energy (zpe) 21463.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 20591.7 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 QCISD/cc-pVDZ
ABC
0.25599 0.14710 0.11463

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.792 0.531
C2 0.000 -0.792 0.531
H3 0.000 1.364 1.473
H4 0.000 -1.364 1.473
C5 -1.310 0.678 -0.268
C6 1.310 0.678 -0.268
C7 1.310 -0.678 -0.268
C8 -1.310 -0.678 -0.268
H9 -1.962 1.433 -0.723
H10 1.962 1.433 -0.723
H11 1.962 -1.433 -0.723
H12 -1.962 -1.433 -0.723

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.58411.10202.35271.53881.53882.12522.12522.41492.41493.22053.2205
C21.58412.35271.10202.12522.12521.53881.53883.22053.22052.41492.4149
H31.10202.35272.72762.28422.28422.98622.98622.94542.94544.06114.0611
H42.35271.10202.72762.98622.98622.28422.28424.06114.06112.94542.9454
C51.53882.12522.28422.98622.62022.95051.35631.09613.38863.92042.2558
C61.53882.12522.28422.98622.62021.35632.95053.38861.09612.25583.9204
C72.12521.53882.98622.28422.95051.35632.62023.92042.25581.09613.3886
C82.12521.53882.98622.28421.35632.95052.62022.25583.92043.38861.0961
H92.41493.22052.94544.06111.09613.38863.92042.25583.92374.85902.8660
H102.41493.22052.94544.06113.38861.09612.25583.92043.92372.86604.8590
H113.22052.41494.06112.94543.92042.25581.09613.38864.85902.86603.9237
H123.22052.41494.06112.94542.25583.92043.38861.09612.86604.85903.9237

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 121.256 C1 C2 H7 85.755
C1 C2 H8 85.755 C1 C5 H8 94.245
C1 C5 H9 132.123 C1 C6 H7 94.245
C1 C6 H10 132.123 C2 C1 C3 121.256
C2 C1 C5 85.755 C2 C1 C6 85.755
C2 H7 C6 94.245 C2 H7 H11 132.123
C2 H8 C5 94.245 C2 H8 H12 132.123
C3 C1 C5 118.835 C3 C1 C6 118.835
C4 C2 H7 118.835 C4 C2 H8 118.835
C5 C1 C6 116.732 C5 H8 H12 133.525
C6 H7 H11 133.525 H7 C6 H10 133.525
H8 C5 H9 133.525
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability