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

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-229.844849
Energy at 298.15K 
HF Energy-229.263905
Nuclear repulsion energy205.357262
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 CCD/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 3238 3097 4.85      
2 A1 3170 3032 20.31      
3 A1 1585 1517 0.06      
4 A1 1169 1119 3.68      
5 A1 1062 1016 3.62      
6 A1 928 888 13.50      
7 A1 814 779 54.65      
8 A1 802 767 13.18      
9 A1 391 374 3.96      
10 A2 3199 3059 0.00      
11 A2 1302 1245 0.00      
12 A2 1244 1190 0.00      
13 A2 918 878 0.00      
14 A2 900 861 0.00      
15 A2 798 763 0.00      
16 A2 344 329 0.00      
17 B1 3234 3093 30.99      
18 B1 1564 1496 4.38      
19 B1 1244 1190 0.37      
20 B1 1118 1069 0.02      
21 B1 969 926 2.43      
22 B1 739 707 53.58      
23 B2 3200 3061 19.77      
24 B2 3160 3023 7.52      
25 B2 1316 1259 27.64      
26 B2 1158 1108 10.53      
27 B2 970 928 5.63      
28 B2 921 881 0.70      
29 B2 825 789 4.86      
30 B2 494 473 4.70      

Unscaled Zero Point Vibrational Energy (zpe) 21388.9 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 20458.5 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 CCD/3-21G*
ABC
0.24707 0.14597 0.11427

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.818 0.563
C2 0.000 -0.818 0.563
H3 0.000 1.396 1.487
H4 0.000 -1.396 1.487
C5 -1.309 0.677 -0.280
C6 1.309 0.677 -0.280
C7 1.309 -0.677 -0.280
C8 -1.309 -0.677 -0.280
H9 -1.940 1.422 -0.753
H10 1.940 1.422 -0.753
H11 1.940 -1.422 -0.753
H12 -1.940 -1.422 -0.753

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.63551.09022.39881.56281.56282.15812.15812.42022.42023.24163.2416
C21.63552.39881.09022.15812.15811.56281.56283.24163.24162.42022.4202
H31.09022.39882.79162.31312.31313.02183.02182.96292.96294.08864.0886
H42.39881.09022.79163.02183.02182.31312.31314.08864.08862.96292.9629
C51.56282.15812.31313.02182.61762.94731.35441.08453.36623.89652.2422
C61.56282.15812.31313.02182.61761.35442.94733.36621.08452.24223.8965
C72.15811.56283.02182.31312.94731.35442.61763.89652.24221.08453.3662
C82.15811.56283.02182.31311.35442.94732.61762.24223.89653.36621.0845
H92.42023.24162.96294.08861.08453.36623.89652.24223.87964.81002.8434
H102.42023.24162.96294.08863.36621.08452.24223.89653.87962.84344.8100
H113.24162.42024.08862.96293.89652.24221.08453.36624.81002.84343.8796
H123.24162.42024.08862.96292.24223.89653.36621.08452.84344.81003.8796

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 122.022 C1 C2 H7 84.840
C1 C2 H8 84.840 C1 C5 H8 95.160
C1 C5 H9 131.344 C1 C6 H7 95.160
C1 C6 H10 131.344 C2 C1 C3 122.022
C2 C1 C5 84.840 C2 C1 C6 84.840
C2 H7 C6 95.160 C2 H7 H11 131.344
C2 H8 C5 95.160 C2 H8 H12 131.344
C3 C1 C5 120.309 C3 C1 C6 120.309
C4 C2 H7 120.309 C4 C2 H8 120.309
C5 C1 C6 113.754 C5 H8 H12 133.354
C6 H7 H11 133.354 H7 C6 H10 133.354
H8 C5 H9 133.354
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability