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All results from a given calculation for C6H8 (1,4-Cyclohexadiene)

using model chemistry: CISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1Ag
Energy calculated at CISD/6-31G*
 hartrees
Energy at 0K-232.497951
Energy at 298.15K-232.506768
HF Energy-231.833308
Nuclear repulsion energy218.763373
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 CISD/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 Ag 3298 3053 0.00      
2 Ag 3125 2893 0.00      
3 Ag 1873 1734 0.00      
4 Ag 1580 1463 0.00      
5 Ag 1298 1202 0.00      
6 Ag 905 838 0.00      
7 Ag 564 522 0.00      
8 Au 1290 1195 0.00      
9 Au 1058 980 0.00      
10 Au 398 368 0.00      
11 B1g 3272 3029 0.00      
12 B1g 1505 1393 0.00      
13 B1g 1450 1342 0.00      
14 B1g 1108 1026 0.00      
15 B1g 602 557 0.00      
16 B1u 3147 2913 57.79      
17 B1u 1067 988 28.02      
18 B1u 674 624 60.55      
19 B1u 119 110 0.63      
20 B2g 3147 2913 0.00      
21 B2g 1084 1004 0.00      
22 B2g 1023 947 0.00      
23 B2g 403 373 0.00      
24 B2u 3295 3050 79.28      
25 B2u 1828 1692 3.63      
26 B2u 1484 1374 0.03      
27 B2u 1249 1156 0.09      
28 B2u 1003 928 0.25      
29 B3g 1295 1199 0.00      
30 B3g 773 715 0.00      
31 B3u 3272 3030 17.75      
32 B3u 3126 2894 85.44      
33 B3u 1581 1464 2.62      
34 B3u 1523 1410 0.32      
35 B3u 1020 945 1.08      
36 B3u 948 878 7.89      

Unscaled Zero Point Vibrational Energy (zpe) 28193.2 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 26101.3 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 CISD/6-31G*
ABC
0.17329 0.16467 0.08709

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 1.495 0.000 0.000
C2 -1.495 0.000 0.000
C3 -0.663 1.249 0.000
C4 0.663 1.249 0.000
C5 -0.663 -1.249 0.000
C6 0.663 -1.249 0.000
H7 1.198 -2.190 0.000
H8 -1.198 -2.190 0.000
H9 1.198 2.190 0.000
H10 -1.198 2.190 0.000
H11 2.161 0.000 0.868
H12 -2.161 0.000 0.868
H13 2.161 0.000 -0.868
H14 -2.161 0.000 -0.868

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 H7 H8 H9 H10 H11 H12 H13 H14
C12.98982.49321.50102.49321.50102.21053.47112.21053.47111.09443.75791.09443.7579
C22.98981.50102.49321.50102.49323.47112.21053.47112.21053.75791.09443.75791.0944
C32.49321.50101.32552.49832.82813.91053.48102.08501.08273.20772.13533.20772.1353
C41.50102.49321.32552.82812.49833.48103.91051.08272.08502.13533.20772.13533.2077
C52.49321.50102.49832.82811.32552.08501.08273.91053.48103.20772.13533.20772.1353
C61.50102.49322.82812.49831.32551.08272.08503.48103.91052.13533.20772.13533.2077
H72.21053.47113.91053.48102.08501.08272.39544.38094.99302.54564.10302.54564.1030
H83.47112.21053.48103.91051.08272.08502.39544.99304.38094.10302.54564.10302.5456
H92.21053.47112.08501.08273.91053.48104.38094.99302.39542.54564.10302.54564.1030
H103.47112.21051.08272.08503.48103.91054.99304.38092.39544.10302.54564.10302.5456
H111.09443.75793.20772.13533.20772.13532.54564.10302.54564.10304.32261.73624.6583
H123.75791.09442.13533.20772.13533.20774.10302.54564.10302.54564.32264.65831.7362
H131.09443.75793.20772.13533.20772.13532.54564.10302.54564.10301.73624.65834.3226
H143.75791.09442.13533.20772.13533.20774.10302.54564.10302.54564.65831.73624.3226

picture of 1,4-Cyclohexadiene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C4 C3 123.671 C1 C4 H9 116.719
C1 C6 C5 123.671 C1 C6 H7 116.719
C2 C3 C4 123.671 C2 C3 H10 116.719
C2 C5 C6 123.671 C2 C5 H8 116.719
C3 C2 C5 112.658 C3 C2 H12 109.731
C3 C2 H14 109.731 C3 C4 H9 119.610
C4 C1 C6 112.658 C4 C1 H11 109.731
C4 C1 H13 109.731 C4 C3 H10 119.610
C5 C2 H12 109.731 C5 C2 H14 109.731
C5 C6 H7 119.610 C6 C1 H11 109.731
C6 C1 H13 109.731 C6 C5 H8 119.610
H11 C1 H13 104.978 H12 C2 H14 104.978
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability