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

using model chemistry: CISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CISD/cc-pVTZ
 hartrees
Energy at 0K-231.439870
Energy at 298.15K 
HF Energy-230.642521
Nuclear repulsion energy210.550712
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 CISD/cc-pVTZ
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 3344 3109 6.36      
2 A1 3243 3016 30.88      
3 A1 1719 1599 0.16      
4 A1 1260 1172 4.61      
5 A1 1107 1029 1.20      
6 A1 1009 938 13.95      
7 A1 923 859 0.10      
8 A1 872 811 75.76      
9 A1 410 381 4.76      
10 A2 3308 3076 0.00      
11 A2 1383 1286 0.00      
12 A2 1278 1188 0.00      
13 A2 1024 952 0.00      
14 A2 1004 933 0.00      
15 A2 827 769 0.00      
16 A2 352 328 0.00      
17 B1 3341 3107 30.54      
18 B1 1692 1573 9.42      
19 B1 1301 1209 5.55      
20 B1 1164 1082 0.20      
21 B1 1062 987 0.56      
22 B1 778 723 44.66      
23 B2 3310 3078 20.78      
24 B2 3235 3008 16.88      
25 B2 1380 1283 39.77      
26 B2 1240 1153 6.36      
27 B2 1039 966 2.48      
28 B2 984 915 7.09      
29 B2 892 830 10.32      
30 B2 523 487 6.24      

Unscaled Zero Point Vibrational Energy (zpe) 22502.0 cm-1
Scaled (by 0.9298) Zero Point Vibrational Energy (zpe) 20922.4 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 CISD/cc-pVTZ
ABC
0.26670 0.15132 0.11832

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.778 0.522
C2 0.000 -0.778 0.522
H3 0.000 1.339 1.443
H4 0.000 -1.339 1.443
C5 -1.293 0.663 -0.264
C6 1.293 0.663 -0.264
C7 1.293 -0.663 -0.264
C8 -1.293 -0.663 -0.264
H9 -1.935 1.401 -0.703
H10 1.935 1.401 -0.703
H11 1.935 -1.401 -0.703
H12 -1.935 -1.401 -0.703

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.55641.07872.30931.51741.51742.08932.08932.37312.37313.16133.1613
C21.55642.30931.07872.08932.08931.51741.51743.16133.16132.37312.3731
H31.07872.30932.67862.24582.24582.93142.93142.89032.89033.98263.9826
H42.30931.07872.67862.93142.93142.24582.24583.98263.98262.89032.8903
C51.51742.08932.24582.93142.58602.90571.32521.07263.34003.85622.2056
C61.51742.08932.24582.93142.58601.32522.90573.34001.07262.20563.8562
C72.08931.51742.93142.24582.90571.32522.58603.85622.20561.07263.3400
C82.08931.51742.93142.24581.32522.90572.58602.20563.85623.34001.0726
H92.37313.16132.89033.98261.07263.34003.85622.20563.86914.77762.8027
H102.37313.16132.89033.98263.34001.07262.20563.85623.86912.80274.7776
H113.16132.37313.98262.89033.85622.20561.07263.34004.77762.80273.8691
H123.16132.37313.98262.89032.20563.85623.34001.07262.80274.77763.8691

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 121.340 C1 C2 H7 85.630
C1 C2 H8 85.630 C1 C5 H8 94.370
C1 C5 H9 132.017 C1 C6 H7 94.370
C1 C6 H10 132.017 C2 C1 C3 121.340
C2 C1 C5 85.630 C2 C1 C6 85.630
C2 H7 C6 94.370 C2 H7 H11 132.017
C2 H8 C5 94.370 C2 H8 H12 132.017
C3 C1 C5 118.807 C3 C1 C6 118.807
C4 C2 H7 118.807 C4 C2 H8 118.807
C5 C1 C6 116.886 C5 H8 H12 133.529
C6 H7 H11 133.529 H7 C6 H10 133.529
H8 C5 H9 133.529
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability