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

using model chemistry: CCSD/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 CCSD/6-311G**
 hartrees
Energy at 0K-231.492784
Energy at 298.15K 
HF Energy-230.614642
Nuclear repulsion energy208.022307
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 CCSD/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3239 3239 7.80      
2 A1 3140 3140 37.35      
3 A1 1624 1624 0.05      
4 A1 1199 1199 3.73      
5 A1 1055 1055 1.11      
6 A1 968 968 8.42      
7 A1 881 881 0.11      
8 A1 820 820 73.16      
9 A1 392 392 4.35      
10 A2 3205 3205 0.00      
11 A2 1317 1317 0.00      
12 A2 1220 1220 0.00      
13 A2 974 974 0.00      
14 A2 909 909 0.00      
15 A2 788 788 0.00      
16 A2 321 321 0.00      
17 B1 3236 3236 38.52      
18 B1 1600 1600 7.38      
19 B1 1249 1249 3.85      
20 B1 1116 1116 0.06      
21 B1 1022 1022 0.26      
22 B1 728 728 42.96      
23 B2 3206 3206 26.28      
24 B2 3132 3132 17.23      
25 B2 1311 1311 33.41      
26 B2 1178 1178 5.69      
27 B2 947 947 7.03      
28 B2 926 926 2.16      
29 B2 849 849 8.24      
30 B2 492 492 5.30      

Unscaled Zero Point Vibrational Energy (zpe) 21520.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 21520.8 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 CCSD/6-311G**
ABC
0.25892 0.14841 0.11578

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.788 0.529
C2 0.000 -0.788 0.529
H3 0.000 1.353 1.465
H4 0.000 -1.353 1.465
C5 -1.305 0.674 -0.267
C6 1.305 0.674 -0.267
C7 1.305 -0.674 -0.267
C8 -1.305 -0.674 -0.267
H9 -1.948 1.424 -0.717
H10 1.948 1.424 -0.717
H11 1.948 -1.424 -0.717
H12 -1.948 -1.424 -0.717

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57701.09262.33681.53311.53312.11542.11542.39852.39853.20063.2006
C21.57702.33681.09262.11542.11541.53311.53313.20063.20062.39852.3985
H31.09262.33682.70582.27252.27252.96802.96802.92582.92584.03324.0332
H42.33681.09262.70582.96802.96802.27252.27254.03324.03322.92582.9258
C51.53312.11542.27252.96802.60992.93711.34701.08603.36893.89692.2396
C61.53312.11542.27252.96802.60991.34702.93713.36891.08602.23963.8969
C72.11541.53312.96802.27252.93711.34702.60993.89692.23961.08603.3689
C82.11541.53312.96802.27251.34702.93712.60992.23963.89693.36891.0860
H92.39853.20062.92584.03321.08603.36893.89692.23963.89664.82662.8482
H102.39853.20062.92584.03323.36891.08602.23963.89693.89662.84824.8266
H113.20062.39854.03322.92583.89692.23961.08603.36894.82662.84823.8966
H123.20062.39854.03322.92582.23963.89693.36891.08602.84824.82663.8966

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 121.103 C1 C2 H7 85.700
C1 C2 H8 85.700 C1 C5 H8 94.300
C1 C5 H9 131.873 C1 C6 H7 94.300
C1 C6 H10 131.873 C2 C1 C3 121.103
C2 C1 C5 85.700 C2 C1 C6 85.700
C2 H7 C6 94.300 C2 H7 H11 131.873
C2 H8 C5 94.300 C2 H8 H12 131.873
C3 C1 C5 118.918 C3 C1 C6 118.918
C4 C2 H7 118.918 C4 C2 H8 118.918
C5 C1 C6 116.678 C5 H8 H12 133.720
C6 H7 H11 133.720 H7 C6 H10 133.720
H8 C5 H9 133.720
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability