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

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-231.048230
Energy at 298.15K 
HF Energy-230.457603
Nuclear repulsion energy205.057790
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/6-31G
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 3217 3100 7.29      
2 A1 3125 3011 34.70      
3 A1 1590 1532 0.02      
4 A1 1171 1128 2.28      
5 A1 1066 1027 1.81      
6 A1 942 908 15.21      
7 A1 818 788 29.57      
8 A1 810 781 42.23      
9 A1 395 381 4.06      
10 A2 3178 3062 0.00      
11 A2 1302 1255 0.00      
12 A2 1254 1208 0.00      
13 A2 939 904 0.00      
14 A2 875 843 0.00      
15 A2 786 757 0.00      
16 A2 330 318 0.00      
17 B1 3213 3096 46.62      
18 B1 1569 1511 5.19      
19 B1 1256 1210 0.94      
20 B1 1118 1077 0.08      
21 B1 1004 968 0.76      
22 B1 739 712 47.62      
23 B2 3179 3064 26.50      
24 B2 3115 3002 15.78      
25 B2 1313 1266 27.00      
26 B2 1183 1140 9.40      
27 B2 951 916 7.49      
28 B2 900 867 0.46      
29 B2 825 795 5.99      
30 B2 496 478 5.41      

Unscaled Zero Point Vibrational Energy (zpe) 21329.0 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 20552.6 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/6-31G
ABC
0.25111 0.14434 0.11222

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.811 0.536
C2 0.000 -0.811 0.536
H3 0.000 1.387 1.469
H4 0.000 -1.387 1.469
C5 -1.325 0.682 -0.270
C6 1.325 0.682 -0.270
C7 1.325 -0.682 -0.270
C8 -1.325 -0.682 -0.270
H9 -1.971 1.433 -0.724
H10 1.971 1.433 -0.724
H11 1.971 -1.433 -0.724
H12 -1.971 -1.433 -0.724

Atom - Atom Distances (Å)
  C1 C2 H3 H4 C5 C6 C7 C8 H9 H10 H11 H12
C11.62251.09652.38831.55621.55622.15282.15282.42112.42113.24243.2424
C21.62252.38831.09652.15282.15281.55621.55623.24243.24242.42112.4211
H31.09652.38832.77472.29712.29713.01013.01012.94922.94924.08084.0808
H42.38831.09652.77473.01013.01012.29712.29714.08084.08082.94922.9492
C51.55622.15282.29713.01012.65012.98051.36391.09043.41143.94312.2582
C61.55622.15282.29713.01012.65011.36392.98053.41141.09042.25823.9431
C72.15281.55623.01012.29712.98051.36392.65013.94312.25821.09043.4114
C82.15281.55623.01012.29711.36392.98052.65012.25823.94313.41141.0904
H92.42113.24242.94924.08081.09043.41143.94312.25823.94294.87502.8669
H102.42113.24242.94924.08083.41141.09042.25823.94313.94292.86694.8750
H113.24242.42114.08082.94923.94312.25821.09043.41144.87502.86693.9429
H123.24242.42114.08082.94922.25823.94313.41141.09042.86694.87503.9429

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 121.695 C1 C2 H7 85.235
C1 C2 H8 85.235 C1 C5 H8 94.765
C1 C5 H9 131.547 C1 C6 H7 94.765
C1 C6 H10 131.547 C2 C1 C3 121.695
C2 C1 C5 85.235 C2 C1 C6 85.235
C2 H7 C6 94.765 C2 H7 H11 131.547
C2 H8 C5 94.765 C2 H8 H12 131.547
C3 C1 C5 118.961 C3 C1 C6 118.961
C4 C2 H7 118.961 C4 C2 H8 118.961
C5 C1 C6 116.742 C5 H8 H12 133.567
C6 H7 H11 133.567 H7 C6 H10 133.567
H8 C5 H9 133.567
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability