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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-231.449055
Energy at 298.15K 
HF Energy-230.603209
Nuclear repulsion energy207.933097
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/6-311G*
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 3218 3081 8.73      
2 A1 3118 2986 39.67      
3 A1 1621 1552 0.12      
4 A1 1196 1145 4.58      
5 A1 1057 1012 1.04      
6 A1 968 927 8.19      
7 A1 882 845 0.09      
8 A1 816 781 81.23      
9 A1 390 374 5.41      
10 A2 3184 3049 0.00      
11 A2 1316 1260 0.00      
12 A2 1225 1173 0.00      
13 A2 974 932 0.00      
14 A2 892 854 0.00      
15 A2 789 755 0.00      
16 A2 326 312 0.00      
17 B1 3215 3078 43.08      
18 B1 1597 1529 6.37      
19 B1 1251 1198 2.70      
20 B1 1116 1068 0.40      
21 B1 1024 980 0.13      
22 B1 723 692 48.53      
23 B2 3186 3050 30.59      
24 B2 3110 2978 18.16      
25 B2 1307 1252 37.34      
26 B2 1180 1130 6.53      
27 B2 942 902 8.47      
28 B2 924 884 0.55      
29 B2 844 808 10.38      
30 B2 493 472 5.55      

Unscaled Zero Point Vibrational Energy (zpe) 21442.7 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 20529.2 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/6-311G*
ABC
0.25880 0.14829 0.11566

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.789 0.528
C2 0.000 -0.789 0.528
H3 0.000 1.352 1.467
H4 0.000 -1.352 1.467
C5 -1.306 0.674 -0.267
C6 1.306 0.674 -0.267
C7 1.306 -0.674 -0.267
C8 -1.306 -0.674 -0.267
H9 -1.950 1.425 -0.719
H10 1.950 1.425 -0.719
H11 1.950 -1.425 -0.719
H12 -1.950 -1.425 -0.719

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57781.09462.33791.53301.53302.11572.11572.40052.40053.20283.2028
C21.57782.33791.09462.11572.11571.53301.53303.20283.20282.40052.4005
H31.09462.33792.70472.27382.27382.96902.96902.93012.93014.03644.0364
H42.33791.09462.70472.96902.96902.27382.27384.03644.03642.93012.9301
C51.53302.11572.27382.96902.61122.93851.34771.08793.37133.89942.2414
C61.53302.11572.27382.96902.61121.34772.93853.37131.08792.24143.8994
C72.11571.53302.96902.27382.93851.34772.61123.89942.24141.08793.3713
C82.11571.53302.96902.27381.34772.93852.61122.24143.89943.37131.0879
H92.40053.20282.93014.03641.08793.37133.89942.24143.89934.82952.8495
H102.40053.20282.93014.03643.37131.08792.24143.89943.89932.84954.8295
H113.20282.40054.03642.93013.89942.24141.08793.37134.82952.84953.8993
H123.20282.40054.03642.93012.24143.89943.37131.08792.84954.82953.8993

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 120.982 C1 C2 H7 85.696
C1 C2 H8 85.696 C1 C5 H8 94.304
C1 C5 H9 131.928 C1 C6 H7 94.304
C1 C6 H10 131.928 C2 C1 C3 120.982
C2 C1 C5 85.696 C2 C1 C6 85.696
C2 H7 C6 94.304 C2 H7 H11 131.928
C2 H8 C5 94.304 C2 H8 H12 131.928
C3 C1 C5 118.900 C3 C1 C6 118.900
C4 C2 H7 118.900 C4 C2 H8 118.900
C5 C1 C6 116.794 C5 H8 H12 133.648
C6 H7 H11 133.648 H7 C6 H10 133.648
H8 C5 H9 133.648
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability