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

using model chemistry: CCSD/6-31G**

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/6-31G**
 hartrees
Energy at 0K-231.420461
Energy at 298.15K 
HF Energy-230.574729
Nuclear repulsion energy208.590463
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/6-31G**
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 3294 3072 7.86      
2 A1 3184 2970 37.50      
3 A1 1661 1549 0.04      
4 A1 1220 1138 2.75      
5 A1 1082 1009 1.34      
6 A1 982 915 8.02      
7 A1 896 835 0.05      
8 A1 829 773 64.35      
9 A1 397 371 3.23      
10 A2 3261 3041 0.00      
11 A2 1350 1259 0.00      
12 A2 1252 1168 0.00      
13 A2 993 926 0.00      
14 A2 918 856 0.00      
15 A2 796 742 0.00      
16 A2 327 305 0.00      
17 B1 3291 3070 42.98      
18 B1 1637 1526 6.91      
19 B1 1277 1191 4.18      
20 B1 1141 1064 0.04      
21 B1 1043 973 0.35      
22 B1 738 688 37.09      
23 B2 3263 3043 28.17      
24 B2 3177 2962 18.86      
25 B2 1345 1255 29.30      
26 B2 1206 1125 5.14      
27 B2 957 892 8.55      
28 B2 935 872 1.68      
29 B2 861 803 5.78      
30 B2 500 467 5.92      

Unscaled Zero Point Vibrational Energy (zpe) 21904.7 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 20428.3 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/6-31G**
ABC
0.26077 0.14909 0.11621

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/6-31G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.786 0.525
C2 0.000 -0.786 0.525
H3 0.000 1.349 1.457
H4 0.000 -1.349 1.457
C5 -1.303 0.672 -0.265
C6 1.303 0.672 -0.265
C7 1.303 -0.672 -0.265
C8 -1.303 -0.672 -0.265
H9 -1.944 1.419 -0.714
H10 1.944 1.419 -0.714
H11 1.944 -1.419 -0.714
H12 -1.944 -1.419 -0.714

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.57181.08882.32941.52831.52832.10942.10942.39042.39043.19013.1901
C21.57182.32941.08882.10942.10941.52831.52833.19013.19012.39042.3904
H31.08882.32942.69782.26322.26322.95812.95812.91472.91474.01934.0193
H42.32941.08882.69782.95812.95812.26322.26324.01934.01932.91472.9147
C51.52832.10942.26322.95812.60642.93291.34481.08143.36173.88832.2333
C61.52832.10942.26322.95812.60641.34482.93293.36171.08142.23333.8883
C72.10941.52832.95812.26322.93291.34482.60643.88832.23331.08143.3617
C82.10941.52832.95812.26321.34482.93292.60642.23333.88833.36171.0814
H92.39043.19012.91474.01931.08143.36173.88832.23333.88734.81362.8389
H102.39043.19012.91474.01933.36171.08142.23333.88833.88732.83894.8136
H113.19012.39044.01932.91473.88832.23331.08143.36174.81362.83893.8873
H123.19012.39044.01932.91472.23333.88833.36171.08142.83894.81363.8873

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 121.137 C1 C2 H7 85.741
C1 C2 H8 85.741 C1 C5 H8 94.259
C1 C5 H9 131.929 C1 C6 H7 94.259
C1 C6 H10 131.929 C2 C1 C3 121.137
C2 C1 C5 85.741 C2 C1 C6 85.741
C2 H7 C6 94.259 C2 H7 H11 131.929
C2 H8 C5 94.259 C2 H8 H12 131.929
C3 C1 C5 118.752 C3 C1 C6 118.752
C4 C2 H7 118.752 C4 C2 H8 118.752
C5 C1 C6 117.010 C5 H8 H12 133.692
C6 H7 H11 133.692 H7 C6 H10 133.692
H8 C5 H9 133.692
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability